Shanxi Xinda sinter pipe and belt machine project

1.

Pinglu hongxinyuan mineral procts processing Co., Ltd. is a limited liability company (invested or controlled by natural person) registered in Pinglu County, Yuncheng City, Shanxi Province on May 26, 2011. Its registered address is located in Shangling village, development zone, Pinglu County, Yuncheng City

the unified social credit code / registration number of Pinglu hongxinyuan mineral procts processing Co., Ltd. is 911408295759717800, and the enterprise legal person is Zhang Yongge

The business scope of Pinglu hongxinyuan mineral procts processing Co., Ltd. is: proction and sales of sinter, crushing and sales of bauxite Projects that need to be approved according to law can be operated only after being approved by relevant departments)

check more information of Pinglu hongxinyuan mineral procts processing Co., Ltd

2.

Shanxi xinda Construction Engineering Co., Ltd. is a limited liability company (invested or controlled by natural person) registered on August 8, 2016. Its registered address is located at No. 101, unit 5, building 2, Dongshan dormitory building bottom, Yingxin West Road, Jiancaoping District, Taiyuan city

the unified social credit code / registration number of Shanxi xinda Construction Engineering Co., Ltd. is 91140108ma0gw86l82, and the enterprise legal person is Hou Zhijie

the business scope of Shanxi xinda Construction Engineering Co., Ltd. is: Construction Engineering; Earthwork engineering; Landscape engineering; estate management; Leasing of general machinery and equipment; Sales of building materials, hardware and electricity, wires and cables, office supplies, computer hardware and software and consumables; Road freight transport Projects that need to be approved according to law can be operated only after being approved by relevant departments)

check more information of Shanxi xinda Construction Engineering Co., Ltd. through aiqicha

3. 1、 List of enterprises (units) with AAA level (85 in total)
1. Shanxi Yabao Pharmaceutical Group Co., Ltd.
2. Transportation branch of Shanxi Fengxi Group Co., Ltd.
3. Yuncheng automobile transportation Co., Ltd. of Shanxi Tongda Group
4. Linfen xiangshunshihua Transportation Co., Ltd.
5. Linfen Xingguo Sitong Transportation Co., Ltd.
6 Linfen jinhengyu automobile transportation Co., Ltd.
7, Linfen Yao District civil blasting equipment franchise company
8, Puxian Anlong Materials Co., Ltd.
9, Jinzhong Ruixin Oil Transportation Co., Ltd.
10, Jinzhong Desheng perforating equipment Co., Ltd.
11, PetroChina sales Pingyao Co., Ltd.
12, Yushe Anshun Transportation Co., Ltd.
13, Jinheng Chemical Co., Ltd.
14 Taigu Ruitai Transportation Co., Ltd.
15, Shouyang Century Fine Chemical Company (non)
16, Xinzhou Quanxin Oil Transportation Co., Ltd.
17, Dingxiang Xixing gas station
18, Shanxi Jiyuan Corn Instry Co., Ltd.
19, Baode Hongda Automobile Trade Co., Ltd.
20, Xinzhou Shunfeng Transportation Co., Ltd.
21 Xinzhou Xingda Transportation Co., Ltd.
22, transportation branch of Xinzhou Donglian Automobile Trade Co., Ltd.
23, Shanxi Chang First Automobile Transportation Co., Ltd.
24, Shanxi Chang automobile transportation Co., Ltd.
25, Chang Yuanchen Oil Transportation Co., Ltd.
26, Shanxi Lu'an civil explosive equipment Co., Ltd.
27 Lvliang dangerous goods center of Shanxi Fenyang automobile transportation Co., Ltd.
28, Wenshui Jinyu Transportation Co., Ltd.
29, Shuozhou Hengtong Oil Transportation Co., Ltd.
30, Yangquan Jindong Transportation Co., Ltd.
31, Yangquan Hengguang Oil Trading Co., Ltd.
32, Pingding civil explosive equipment Co., Ltd.
33, Yangquan Huarun Gas Co., Ltd.
34 Shanxi Jincheng automobile transportation Co., Ltd.
35, Shanxi Mingshi coalbed methane utilization Co., Ltd.
36, Jincheng Chengyun Logistics Co., Ltd.
37, Taiyuan Railway Bureau
38, Shanxi Coking Group Co., Ltd.
39, Shanxi Yihong gas instry Co., Ltd.
40, Taiyuan shengjinyang Chemical Instry Co., Ltd.
41 Taiyuan Yinhe Liquefied Gas Co., Ltd.
42, Taiyuan baohuatong Automobile Service Co., Ltd.
43, Taiyuan Jiancaoping District Wangda Trade Co., Ltd.
44, Taiyuan Yingze garden liquefied gas reserve station
45, Shanxi North Xing'an Chemical Instry Co., Ltd.
46, Taiyuan QIAOYOU Chemical Instry Co., Ltd.
47 Taiyuan xinyide Medical Equipment Co., Ltd.
48, Taiyuan Iron and steel (Group) Co., Ltd.
49, Taiyuan Zhongya Petrochemical Co., Ltd.
50, Shanxi Huan Instrial Co., Ltd.
51, Taiyuan huiyuantai liquefied gas sales Co., Ltd.
52, Shanxi Changcheng Petroleum Co., Ltd.
53, Taiyuan Zhihai Group Co., Ltd.
54 Taiyuan dingshengda Gas Transportation Co., Ltd.
55, Taiyuan Haowen Petrochemical Co., Ltd.
56, China First Automobile Group Corporation Qingxu service station
57, Taiyuan shuaihang Petrochemical Transportation Co., Ltd.
58, PetroChina Transportation Company Shanxi Branch
59, Taiyuan Huaxing Chemical Transportation and Marketing Co., Ltd.
60, Taiyuan Jintang Gas Co., Ltd.
61 Taiyuan juxiangyuan Gas Co., Ltd.
62, Taiyuan Steel Transportation Logistics Co., Ltd.
63, Shanxi Zhongyou Jieneng Transportation Co., Ltd.
64, Taiyuan Gangcheng Enterprise Co., Ltd.
65, Taiyuan dissolved acetylene plant
66, Shanxi Jiangyang automobile transportation Co., Ltd.
67, Shanxi Dongfanghong paint Co., Ltd.
68 Taiyuan Zhonglian new Huaxia automobile Chain Sales Co., Ltd.
69, Taiyuan fireworks and firecrackers franchise Co., Ltd.
70, Shanxi Qida instrial gas transportation and Marketing Co., Ltd.
71, Taiyuan tongwangdachang transportation and Marketing Co., Ltd.
72, Shanxi automobile transportation group Jinlong Jietai transportation and Trade Co., Ltd.
73, Taiyuan Public Transport Corporation
74 Taiyuan Tongda Transportation Agency Co., Ltd.
75, Taiyuan ChiXiang Gas Co., Ltd.
76, Taiyuan liquefied petroleum procts Co., Ltd.
77, Taiyuan Baijin Road Transportation Service Co., Ltd.
78, Shanxi Taizhong Xingye Investment Development Co., Ltd.
79, Shanxi Bingzhou Express Group Wutong Transportation Co., Ltd.
80 Shanxi Xingmao fireworks Management Co., Ltd.
81, Taiyuan Yongsheng Gas Co., Ltd.
82, Taiyuan Longxin instry and Trade Co., Ltd.
83, Taiyuan Iron and steel (Group) bioxi Gas Co., Ltd.
84, Shanxi animal husbandry and Veterinary Bureau (non)
85, Shanxi Taiyuan aviation training base (non)
2 A list of 77 enterprises (units) assessed as AA level
1. Yuncheng xinwantong Freight Co., Ltd.
2. Shanxi Yuncheng Transportation Group Co., Ltd.
3. Jiangxian branch of Shanxi Yuncheng Transportation Group Co., Ltd.
4. Yuncheng Hedong Petrochemical Transportation Co., Ltd.
5. Yuanqu branch of Yuncheng xinwantong Freight Co., Ltd.
6 Zhongtiaoshan Construction Co., Ltd.
7, Xinjiang Fenghua Transportation Co., Ltd.
8, Hejin Jinghai Trade Co., Ltd.
9, Hejin Qifeng Transportation Co., Ltd.
10, Hejin Xingyuan Huitong Transportation Co., Ltd.
11, Linyi Zhonglian Trade Co., Ltd.
12, Yuncheng Shuntian Tailong Transportation Co., Ltd.
13 Shanxi Shunfeng Trade Co., Ltd. (non)
15, Yuncheng Hedong civil explosive equipment General Company (non)
16, Shanxi Beihua Guan aluminum Chemical Co., Ltd. (non)
17, Shanxi Yongji Electric Machinery Co., Ltd. (non)
18, No. 577 Department of Shanxi reserve material administration bureau (non)
19, No Linfen transportation group Botong Co., Ltd.
20 Linfen Yangzhou oil supply Co., Ltd.
21, Linfen Chuanghui Jiaotie Co., Ltd.
22, Xiangning material company
23, Houma economic and Technological Development Zone bonded logistics branch company
24, Daning Huanghe Chemical Instry Co., Ltd.
25, Huozhou Yonghang Transportation Co., Ltd.
26 Jinlinyun Freight Co., Ltd.
27, Jinzhong Anhui Co., Ltd.
28, Shanxi Hetian Co., Ltd.
29, Shanxi Xinhe Taiming Chemical Co., Ltd.
30, Yuci Wanjia Chemical Co., Ltd.
31, Qixian Honggu Liquor Co., Ltd.
32, Jiexiu Xianghe Petrochemical Commercial Transportation Co., Ltd.
33, Lingshi Kangtong Transportation Co., Ltd.
34 Jinzhong fireworks Co., Ltd. (non)
35, Yuci Changqing adhesive Co., Ltd. (non)
36, Xinzhou xinchengda Co., Ltd.
37, Wutai Kangan Wutaishan automobile transportation Co., Ltd.
38, Baode Anshun Automobile Co., Ltd.
39, Xinzhou Lizhong Transportation Co., Ltd.
40, freight branch of Xinzhou automobile transportation Co., Ltd.
41 Shanxi Huashang Instrial Co., Ltd.
42, Chang Yuanchen Lutong Transportation Co., Ltd.
43, Tianji Group Applied Chemical Co., Ltd.
44, Shanxi Chang Juneng Chemical Gas Co., Ltd.
45, Chang Huifeng Transportation Co., Ltd.
46, Shanxi Huguan Chemical Instry Group Co., Ltd.
47 Shanxi Lu'an environmental protection and Energy Development Co., Ltd. (non)
48, 972 division of No.3 Bureau of No.10 unit (non)
49, Luliang Shenghui Transportation Co., Ltd.
50, Shanxi Tianning lacquer Oil Co., Ltd.
51, Luliang Xuyang transportation Co., Ltd.
52, Luliang Tonghao Transportation Co., Ltd.
53 Fenxi Mining Group Chemical Co., Ltd. (non)
54, Fenyang Huaqing ignition oil supply station
55, Xiaoyi AnTaiDa Transportation Co., Ltd.
56, Luliang Ruilin Transportation Co., Ltd.
57, Luliang Hongkou Transportation Co., Ltd.
58, Shuozhou Yuesheng Instrial Co., Ltd.
59, Pinglu Xinda minbao transportation team
60 Yangquan liquefied petroleum gas Co., Ltd.
61, Yangquan Coal Instry Group Co., Ltd.
62, Yangquan citizen explosive equipment franchise Co., Ltd.
63, Yangquan transportation group No.3 freight company
64, Yu County Ji'an civil explosive Service Co., Ltd.
65, Yangquan Transportation Group Co., Ltd.
66, Jincheng citizen explosive equipment franchise Co., Ltd.
67 Lingchuan Dali electromechanical Chemical Co., Ltd.
68, Lingchuan Shunli Da Transportation Co., Ltd.
69, Shanxi Jianghuai Heavy Instry Co., Ltd.
70, Shanxi Jincheng Anthracite Mining Group Co., Ltd.
71, Jincheng Xiyue material Trade Co., Ltd.
72, Shanxi Petroleum Corporation Jincheng company
73, Jincheng company Zezhou material company
74 Jincheng Huixin Logistics Co., Ltd.
75, Shanxi Chenguang Logistics Co., Ltd.
76, Shanxi Jinmei aisikai Gas Co., Ltd.
77, Shanxi Wan Logistics Co., Ltd.
3. List of enterprises (units) assessed as grade A (a total of 28)
1, Datong Xianghao Petrochemical Transportation Co., Ltd.
2, Datong Yunwei mineral Pharmaceutical Co., Ltd.
3 Datong Coal Mining Group Co., Ltd.
4, Datong Hongxin Petrochemical Co., Ltd.
5, Datong Sanlian Petroleum Sales Co., Ltd.
6, Datong civil blasting equipment Monopoly Company
7, Datong City Yong'an transportation service center
8, Datong Locomotive Coal Chemical Co., Ltd.
9, Datong Qinhuang railway Co., Ltd. material supply section
10 Guangling Fine Chemical Group Co., Ltd.
11, Datong Airport Co., Ltd. (non)
12, Taiyuan Heavy Instry Datong gear Branch Co., Ltd. (non)
13, Xinzhou Huaying new Huaxia automobile Chain Sales Co., Ltd.
14, Shanxi Bingzhou Express group Fanshi Transportation Co., Ltd.
15, Shanxi yangfangkou Transportation Co., Ltd.
16 Chang Zhongtian Automobile Instry Co., Ltd.
17, Tianji Group Xinghua Transportation Co., Ltd.
18, Chang suburb sunshine acetylene gas plant
19, Shanxi Tunliu Chemical Instry Group Co., Ltd. (non)
20, Shanxi Luliang changyuanda Transportation Co., Ltd.
21, Shanxi Datuhe Coking Co., Ltd.
22, Shuozhou automobile transportation Co., Ltd.
23 Yangquan Communications Group dangerous goods transportation Co., Ltd.
24, Yangquan Xinheng Chemical Co., Ltd.
25, Jincheng polymer Logistics Co., Ltd.
26, Yangcheng Huiyuan Transportation Co., Ltd.
27, Jincheng Lanyan Coal Instry Co., Ltd.
28, Yangcheng hongzeyuan economic and Trade Co., Ltd.
4. List of enterprises (units) assessed as grade B (a total of 7)
1 Jiexiu yianjiaqian Coal Chemical Co., Ltd.
2, Xiyang Jinxing sulfide plant
3, Shanxi Reserve Material Management Bureau 476 office
4, Jincheng Branch of fourth party logistics (Beijing) Co., Ltd.
5, Shanxi Provincial Service Center for system reform
6, Shanxi sales branch of PetroChina Co., Ltd.
7, automobile transportation department of Taiyuan Chemical Plant

4. Coking coal is the name of bituminous coal with high degree of coalification and good coking property in China's national coal classification standard. According to the standard, coking coal is composed of two parts. The first kind of coking coal has a few AF & gt of dry ash free volatile matter; 10-28%, bond index g & gt; The maximum thickness of glial layer (see index of glial layer) is y = 25. The coking property of this part of coal is very good, and the qualified blast furnace can be proced separately. The other kind of coking coal's dry ash free volatile (see coal analysis) V '& gt; 20-28%, bond index g & gt; 50 ~ 65, the coking property is worse than the former. Coking coal has medium volatile matter and good cohesiveness (see the cohesiveness of coal). It is a typical coking coal (see coal for rubber). It can form colloid with good thermal stability when heated. When coking alone, the coke block is large, with few cracks and high mechanical strength. However, e to small shrinkage and high expansion pressure, it may cause difficulty in pushing coke, and even cause damage to the furnace body. In coking coal, coking coal can play the role of coke skeleton and ease the shrinkage stress, so as to improve the mechanical strength of coke. It is a high-quality coking raw material (see coal blending) in the world, the resources of coking coal are relatively scarce. It is a valuable resource that must be protected, so coking coal is rarely used alone. In China, the typical coal types of the first type of coking coal are Fengfeng No.2 Coal Mine in Hebei Province, Xiqu Coal Mine in Gujiao, Shanxi Province, Di Coal Mine in Jixi, Heilongjiang Province, Zhangzhuang coal mine in Huaibei, Anhui Province and Dabao top coal mine in Dukou, Sichuan Province. The typical coal types of the second kind of coking coal are Tiechang coal in Tonghua, Jilin Province and Hetangou coal in Baotou, Inner Mongolia Sintering sintering is one of the main methods which can't directly add iron (fine) ore powder into blast furnace. The metallurgical properties of raw materials can also be improved by sintering. Sintering is also used in nonferrous metal smelting process. The sintering of non-ferrous sulfide concentrate has the function of desulfurization besides agglomeration. Sintering technology was introced in 1911, when the main purpose was to utilize the waste of iron and steel plants. With the improvement of concentrate requirement in beneficiation and blast furnace ironmaking, sintering proction has developed rapidly since 1950s. Sintering is to mix the iron concentrate obtained from beneficiation of lean iron ore, the fine ore obtained from crushing and screening of rich iron ore and the iron containing powder, flux and fuel recovered in proction according to the required proportion, add water to make granular sintering mixture, spread it on the sintering machine, and then sinter into blocks by ignition and ventilation. In the proction of sinter, the methods of sintering plate, rotary kiln and suspension sintering were used before, but now the belt sintering machine is used. The latter has high output and good proct quality (Fig. 1 Structure of belt sintering machine). Rich ore powder is mainly used in sintering abroad, while concentrate powder is mainly used in China. China has some valuable experience in fine concentrate sintering process. The sintering reaction process is carried out layer by layer in turn (Fig. 2 reaction diagram of each layer in sintering process). The air is preheated through the sintered hot sinter layer, and the solid carbon is burned in the combustion layer to release heat and obtain high temperature (1300-1600 □). According to the temperature and reaction atmosphere, the following reactions can be carried out: (1) decomposition reaction CaCO □ - → CaO + CO □ (above 750) (2) rection reaction 3Fe □ o □ + CO - → 2Fe □ o □ + CO □ Fe □ o □ + CO - → 3feo + CO □ 3) oxidation and desulfurization reaction (3) ring heating, liquid phase first appears in the lower melting point part of the material layer, which soaks and melts the surrounding materials and polymerizes the adjacent droplets, causing shrinkage and pore formation, and solidifying and crystallizing ring cooling, It becomes porous agglomerate with certain strength. The basic liquid phase in sintering process is silicate and ferrite system. The high temperature waste gas extracted from the combustion layer passes through the preheating and drying layer to transfer heat to the sinter material, so as to ignite the fuel and evaporate and decompose the free water and combined water in the material. The waste gas continues to go down, the temperature continues to drop, and the moisture in it condenses again, making the material too wet. If the sintering material is preheated to a certain temperature, the phenomenon of over humidity can be eliminated. The variety of sinter has developed from single acid sinter to self fluxing sinter, high basicity sinter and sinter containing o under different conditions. The quality inspection items of sinter include: particle size composition, powder content, cold drum strength, recibility (900-1200 □), porosity, falling strength, low temperature rection pulverization rate, softening temperature, melting temperature and shrinkage, etc. The raw materials should be treated carefully before sintering. Iron concentrate powder and rich iron ore powder should be mixed in the raw material yard with special stacking and reclaiming equipment to ensure the chemical composition stability of sintering material. Limestone should be broken to 2-3mm to ensure the strength of sinter. The sintering process can be strengthened by replacing part of limestone with quicklime. The solid fuel for sintering (coke powder or anthracite) should be crushed to less than 3 mm, but the fine powder less than 0.5 mm should not be too much. Accurate proportioning is an important link to ensure the quality of sinter; Now more weight batching method is used. Automatic batching equipment is composed of disc (or belt) feeder and weighing device. The prepared sinter is usually mixed in a drum mixer, wetted with water and formed into particles to obtain a sinter mixture with uniform composition and good air permeability. Generally, it is mixed twice: the first is mixing and wetting with water; The second was pelletizing and adding water. The sintering machine should be paved before feeding. The bottom material is generally sinter with particle size of 8-25 mm and thickness of about 30 mm. In this way, it can ensure the burning through and prevent the grate from burning out. Generally, the mixture is added to the ore trough on the sintering machine by shuttle distributor, and then evenly distributed on the trolley by cylinder distributor and roller distributor. The sintering machine is composed of a closed track laid on the steel structure and a series of sintering trolleys continuously moving on the track. In recent years, sintering machine develops to large scale. In 1911, the area of the first sintering machine was 8.3 meters, and in the 1970s, it was 600 meters (5 meters wide and 120 meters long). The proction capacity of modern sintering machine is 1.5 ~ 2.0 T / (m □ □ h). The sintering material is ignited by gas or liquid fuel, and the ignition temperature is 1200 ~ 1300 □. The sinter strength can be improved, solid fuel can be saved and FeO content can be reced by properly increasing igniter and adding low temperature (600-900 □) holding section. On the basis of improving the permeability of sinter, increasing the thickness of sinter layer can rece the fuel consumption and improve the quality. At present, the thickest layer is 500-600 mm. The energy consumption of modern sintering machine (including ignition, solid fuel in mixture and workshop power consumption) is 0.45-0.60 per ton of sinter × 10 kcal. The newly-built and rebuilt sinter plants mostly adopt the cooling process of sinter, which is convenient for "pelletizing". The charging equipment of blast furnace is not easy to be damaged and the top of blast furnace is well sealed, which is beneficial to high pressure operation. Environmental protection measures the st and waste gas of sintering plant pollute the environment. In order to protect the environment, water sealed zipper should be used for st cleaning, high-efficiency electrostatic precipitator should be used instead of multi pipe desting, closed transportation and other measures should be taken to rece sulfur oxides, nitrogen oxides, carbon monoxide and other harmful gases in sintering waste gas Coking is also called high temperature retorting or coking. One of the methods of coal retorting refers to the process of making coke by heating coal in coke oven (900-1100 ℃) under the condition of isolated air. In addition to coke, coke oven gas and a variety of coking chemical procts are also proced. About 0.7-0.8t coke, 300-350m coke oven gas and 0.03-0.06t coking chemical procts can be obtained per ton of dry blending coal. The large-scale application of coal coking technology in instrial proction began in the 18th century. At that time, the traditional charcoal ironmaking was limited by the increasing shortage of wood, so it was necessary to find alternative fuels. In 1735, coke made from bituminous coal was used to make iron in England, which marked the beginning of the development of coking instry. Since then, coking technology has been constantly changing, from the original batch distillation, through the kiln, down flame furnace, waste heat coke oven, regenerative coke oven and other stages of development, forming a modern coking process. Coking coal the most important characteristic of coking coal is that it is required to have a certain degree of cohesiveness, that is, the powdery coal can be softened and melted when heated, and through the colloidal state, the coal particles can be combined with each other and solidified into solid block coke. In addition, the content of ash and sulfur impurities should be low. According to the Chinese coal classification scheme, the main grades of coking coal are coking coal, fat coal, gas coal and lean coal (see Coal Chemistry). Only coking coal can be made into coke with better quality, but the storage capacity of this kind of coal is very small. In order to expand the source of coking coal and improve the quality of coke, coal blending is usually used. That is, according to the coking characteristics of each brand of coal, through coal blending experiment, find the appropriate proportion, refine qualified coke. In addition to coal blending coking, stamp charging coking, briquette blending coking and still improving drying and preheating coal directly into the furnace are adopted in coking process. These methods to increase the bulk density of coal entering the furnace can effectively increase the consumption of weakly caking coal. In addition, the block coke with certain strength can be obtained by adding binder into the lean coal and thinner agent into the fatter coal. For non coking coal, briquette coal is prepared first and then coking separately. During the coking process, the coal goes through the stages of drying and preheating, forming colloid, condensing and coking. The coking process of coal in the carbonization chamber is actually coking in layers, because the heat is supplied from both sides of the furnace wall, and the thermal conctivity of coal is low, there is a large temperature difference between the layers of coal materials parallel to the furnace wall. In this way, at the same time, each layer of coal at different distances from the furnace wall is in different coking stages. The coal seam near the furnace wall is coking first, and then moves towards the center of the carbonization chamber axis layer by layer. When the coke layer extends from both sides to the center of the carbonization chamber and will be combined, the coking process will end, and the whole coking time is about 13-18h. In recent years, a new coking theory, the so-called mesophase theory, has been put forward. It studies the coking process from the perspective of optical physics. It is considered that there is a liquid crystal (mesophase) structure in the colloidal liquid of coal pyrolysis, which is derived from vitrinite and closely related to the structure of coke. Coking chemical procts include coal tar, crude benzene, ammonia and other chemical procts. The yields of various coking chemicals are related to the quality of raw coal and coking conditions. 25-45kg of coal tar, 7-14kg of crude benzene and 2.4-4.5kg of ammonia can be obtained per ton of dry coal. The recovery process of coking chemicals (see coking chemical proct recovery process) generally includes the separation of gas and tar, ammonia absorption and crude benzene recovery. The crude gas from coke oven is quenched by water spray and condensed into coal tar and ammonia water in primary cooler. After separation in separation tank, ammonia water enters ammonia tower. The ammonia evaporated and the ammonia not dissolved in water in the gas are neutralized with sulfuric acid in the saturator to proce ammonium sulfate. After deacidification by acid separator and cooling by final cooling tower, the gas from saturator enters benzene absorption tower to absorb crude benzene in gas with wash oil, and crude benzene in wash oil is evaporated out in debenzylation tower. Coke oven gas, which is the gas after crude benzene is removed, can be used as fuel gas or chemical raw materials after removing harmful sulfides Yao Zhaozhang, editor in chief: coking, metallurgical instry press, Beijing, 1983 Zhao Shuchang (Guo Shucai)