Natural gas desulfurization technology is divided into physical absorption method, chemical absorption method and oxidation method. This method is represented by the pressure reduction method, in which butyl alum is used as the absorption agent, and then H2S is absorbed by the pressure reduction method, represented by the physical absorption method.

化学吸收法是以弱碱性溶剂为吸收剂，吸收过程伴随化学反应过程，吸收H2S后的吸收剂经增温、减压后得以再生，热砷碱法即属化学吸附法;氧化法是以碱性溶液为吸收剂，并加入载氧体为催化剂，吸收H2S，并将其氧化成单质硫，氧化法以改良ADA法和栲胶法为代表。

Chemical absorption method uses weak alkaline solvent as absorbent, and the absorption process is accompanied by chemical reaction process. The absorbent after absorbing H2S can be regenerated after increasing temperature and reducing pressure. Hot arsenic alkali method belongs to chemical adsorption method; The oxidation method uses alkaline solution as absorbent and oxygen carrier as catalyst to absorb H2S and oxidize it into elemental sulfur. The oxidation method is represented by improved ADA method and tannin extract method.

含有H2S的煤气从脱硫塔下部进入，在填料层内与塔顶喷淋下的脱硫贫液发生反应，将 H2S吸收脱除，净化后的气体从脱硫塔顶排出，然后在捕滴器内脱除多余水分后送入车间使用。

The gas containing H2S enters from the lower part of the desulfurization tower and reacts with the desulfurization lean liquid sprayed on the top of the tower in the packing layer to absorb and remove H2S. The purified gas is discharged from the top of the desulfurization tower, and then the excess water is removed in the drip catcher and sent to the workshop for use.

从塔顶淋下的溶液吸收 H2S后流入富液槽进行析硫，然后经再生泵送至喷射再生槽与空气反应，溶液被氧化、再生后经液位调节器流入贫液槽，再经脱硫泵打入脱硫塔，连续脱硫。同时喷射再生槽内产生的硫泡沫溢流到泡沫池过滤，滤出硫膏。

After absorbing H2S from the top of the tower, the solution flows into the rich liquid tank for sulfur separation, and then is sent to the jet regeneration tank through the regeneration pump for reaction with air. After being oxidized and regenerated, the solution flows into the lean liquid tank through the liquid level regulator, and then is pumped into the desulfurization tower through the desulfurization pump for continuous desulfurization. At the same time, the sulfur foam generated in the spray regeneration tank is spilt to the foam pool for filtration, and the sulfur paste is filtered out.

1、天然气净度可根据实际需要调节，可以平稳的控制煤气中的H2S的含量。

1. The purity of natural gas can be adjusted according to the actual needs, and the H2S content in gas can be stably controlled.

2、与干法脱硫相比，虽然投资是干法脱硫的2-3倍，但是运行成本低，1000Nm?实际脱硫费用为4元左右，避免了干式脱硫系统因脱硫剂再生后脱硫效果差及硫的吸附等原因而导致的生产成本增加的问题。

2. Compared with dry desulfurization, although the investment is 2-3 times that of dry desulfurization, the operation cost is low, 1000nm ? The actual desulfurization cost is about 4 yuan, which avoids the increase of production cost of dry desulfurization system due to poor desulfurization effect after desulfurization agent regeneration and sulfur adsorption.

3、具有操作稳定、运行安全，脱硫效率高的特点。脱硫效率可达到97%以上,脱硫后煤气中H2S含量<50mg/Nm3。

3. It has the characteristics of stable operation, safe operation and high desulfurization efficiency. The desulfurization efficiency can reach more than 97%, and the H2S content in the gas after desulfurization is less than 50mg / Nm3.

4、如果脱硫催化剂是PDS或’888’,不但能脱除H2S而且能脱煤气中占总硫含硫10%左右的部分有机硫。

4. If the desulfurization catalyst is PDS or '888', it can not only remove H2S, but also remove some organic sulfur accounting for about 10% of the total sulfur in the gas.

适用范围编辑 播报

Scope of application: editing and broadcasting

适用于各种煤气、沼气和天然气的脱硫(H2S)。

It is suitable for desulfurization (H2S) of various gas, biogas and natural gas.