In the process of coke production in the past, most of the projects didn't recycle the coking gas. Either the flare head was used for emptying and burning, or it was directly released, which not only caused a serious waste of resources, but also caused great pollution to the environment. In some coking areas of Shanxi, Shaanxi and Inner Mongolia, the air pollution has reached an alarming and intolerable level. How to effectively use the coal gas resources associated with coking is a very important subject for China's sustainable development. It is not only to control environmental pollution, but also to save resources, improve energy efficiency and solve the current power problem The supply of coal is in short supply, so as to maintain the sustainable development of the country's society and economy.

一边是资源的大量挥霍和环境的急遽恶化，一边是资源供应的大限即将临至，为此国务院发展研究已经建议国家将节约资源与环境保护计划列入基本国策，国务院主持的国家中长期能源发展规划中也确立“节能优先”的宗旨，要落实这一决策，有效回收利用焦化煤气是一项必不可少的工作。

The development research center of the State Council has proposed that the state should include the plan of resource conservation and environmental protection into the basic national policy. The national medium and long-term energy development plan presided by the State Council has also established the purpose of "energy conservation priority". It is necessary to implement this decision and effectively recycle coke Gasification of coal gas is an essential work.

焦化煤气发电目前可以利用的设备主要是传统的种用锅炉和蒸汽轮机的技术结合;以气体为燃料的燃气内燃机两种，用户可以根据项目的实际操作情况和现场条件进行选择。

At present, the equipment that can be used in coking gas power generation is mainly the combination of traditional seed boiler and steam turbine technology; there are two kinds of gas-fired internal combustion engine, which users can choose according to the actual operation situation and site conditions of the project.

锅炉+蒸汽轮机：这是一个非常传统的技术，也是大家比较熟悉的工艺方式，它是采用锅炉来直接燃烧焦化煤气，将煤气的热能通过锅炉内的管束把水转换为蒸汽，利用蒸汽推动蒸汽轮机再驱动发电机发电。系统的主要设备是燃气燃烧器、锅炉、化学水系统、给水系统、蒸汽轮机、冷凝器、冷却塔、发动机变压器和控制系统，工艺流程比较复杂。它的优点是：对于燃料气体要求比较低，只要燃气燃烧器能够承受的气体，一般都可以适应，燃气只需要有限的压力，因而燃气处理系统投资比较简单;但缺点是：工艺复杂，建设周期比较长、难以再移动，必须消耗大量的水资源，占地比较多，能源利用率较低。

Boiler + steam turbine: This is a very traditional technology, and it is also a familiar process. It uses the boiler to directly burn the coking gas. The heat energy of the gas is converted into steam through the tube bundle in the boiler, and the steam is used to drive the steam turbine to drive the generator to generate electricity. The main equipment of the system is gas burner, boiler, chemical water system, water supply system, steam turbine, condenser, cooling tower, engine transformer and control system, and the process flow is relatively complex. Its advantages are: relatively low requirements for fuel gas, as long as the gas burner can bear the gas, generally can adapt, gas only needs limited pressure, so the gas treatment system investment is relatively simple; but the disadvantages are: the process is complex, the construction cycle is relatively long, it is difficult to move, must consume a lot of water resources, occupy more land, and have a low energy utilization rate.

焦化气燃气内燃机：简单说就是通过使焦炉气在机器内部燃烧，将其放出的热量推动活塞运动，驱动发电机进行发电的过程，相比传统方式其优点是：运行可靠，结构简单、紧凑，较小，整套发电机组可以组装在一个大型集装箱中，比之燃煤或燃气锅炉占地要少，节省基建投资;设备对水、电消耗较少，燃气轮机耗水极少，甚至可以不用水，许多机组可以无电源起动，因此适用于缺水、缺电的地区，再者燃气内燃机具有启停快，自动化程序高的特点。

Coker gas-fired internal combustion engine: in a simple way, the process of burning coke oven gas inside the machine will drive the piston to move and drive the generator to generate electricity. Compared with the traditional method, its advantages are: reliable operation, simple structure, compact and small size. The whole generator set can be assembled in a large container, which occupies less land than the coal-fired or gas-fired boiler, It can save capital construction investment; the equipment consumes less water and electricity, and the gas turbine consumes little or no water. Many units can start without power supply, so it is suitable for areas with water shortage and power shortage. Moreover, the gas-fired internal combustion engine has the characteristics of fast start-up and stop and high automation procedure.

它的缺点是：燃烧低热值燃料时，机组功率下降明显，余热回收方式比较复杂，需要频繁更换机油和火花塞，运维成本较高，排放相对较高，可能需要补充脱硫脱硝设备，增加投资成本，在余热不回收的情况下需要冷却系统。

Its disadvantages are: when burning low calorific value fuel, the unit power decreases significantly, the waste heat recovery method is relatively complex, frequent oil and spark plug replacement are required, the operation and maintenance cost is high, and the emission is relatively high. It may be necessary to supplement the desulfurization and denitrification equipment, increase the investment cost, and need the cooling system when the waste heat is not recovered.