焦炉煤气是宝贵的资源,作为工业或民用燃料,是一种清洁能源。在炼焦过程中,原料煤中有30%~35%的硫转化成硫化氢等硫化物,与氨气、氮硫化物一起形成煤气中的杂质,硫化氢具有很强的腐蚀性,焦炉煤气若不脱除硫化氢会严重腐蚀设备,作为民用燃料会污染环境,损害人们身体健康;下面让我们来了解一下有关煤气脱硫工艺的相关知识吧。
Coke oven gas is a valuable resource, as an industrial or civil fuel, is a kind of clean energy. In the coking process, 30% - 35% of sulfur in raw coal is converted into sulfide such as hydrogen sulfide, which forms impurities in the gas together with ammonia and nitrogen sulfide. Hydrogen sulfide is highly corrosive. If hydrogen sulfide is not removed from coke oven gas, it will seriously corrode the equipment. As a civil fuel, it will pollute the environment and damage people's health; Now let's learn about the relevant knowledge of gas desulfurization process.
焦炉煤气脱硫工艺,经过几十年的发展形成了一些传统流程,该流程简单,易操作,生产稳定,在焦化生产中发挥了重要作用;焦炉煤气脱硫,有其特殊性,从工艺上讲,在脱硫反应过程中,同时伴随氧化再生析硫过程,解析的硫能及时分离出来,使反应成硫与带出的硫成正比,达到物料平衡,将生产纳入良性循环的控制,追求高能、低耗、长周期、安全、经济运行。
After decades of development, coke oven gas desulfurization process has formed some traditional processes, which are simple, easy to operate, stable in production and play an important role in coking production; Coke oven gas desulfurization has its particularity. In terms of process, in the desulfurization reaction process, accompanied by oxidation regeneration sulfur evolution process, the analyzed sulfur can be separated in time, so that the reaction sulfur is proportional to the sulfur carried out, achieving material balance, bringing production into a virtuous cycle control, and pursuing high-energy, low consumption, long-term, safe and economic operation.
近几年,随着焦化技术的不断进步,为了达到更好的脱硫效果,很多厂在实际运行中都有了一些变化。对于焦炉煤气脱硫由一进口含量硫化氢含量很高,在脱硫工艺的设计上一般都设计成双系统,即可并联操作,又可串联运行,双脱硫塔并联操作时,脱硫系统阻力小,单塔负荷低,不易堵塔;但脱硫效果不如双塔串联运行时高,考虑到焦炉煤气入口硫化氢含量较高,脱硫装置采用双塔串联运行方式。
In recent years, with the continuous progress of coking technology, in order to achieve better desulfurization effect, many plants have some changes in the actual operation. For the desulfurization of coke oven gas, the content of hydrogen sulfide in one inlet is very high. In the design of desulfurization process, it is generally designed as two systems, which can be operated in parallel or in series. When the two desulfurization towers are operated in parallel, the resistance of desulfurization system is small, the load of single tower is low, and it is not easy to block the tower; Considering the high content of hydrogen sulfide in the inlet of coke oven gas, the desulfurization device adopts double tower series operation mode.
随着环保的重视,焦炉煤气脱硫工艺的地位越来越高,希望通过不断的优化调整,使整个系统能实现经济、高能、长周期稳定运行。
With the attention of environmental protection, the status of coke oven gas desulfurization process is getting higher and higher. It is hoped that through continuous optimization and adjustment, the whole system can achieve economic, high-energy, long-term stable operation.