天然氣脫硫技術(shù)分為物理吸收法、化學吸收法和氧化法三種。物理吸收法是采用有機溶劑作為吸收劑，加壓吸收H2S，再經(jīng)減壓將吸收的H2S釋放出來，吸收劑循環(huán)使用，該法以環(huán)丁礬法為代表。
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.
化學吸收法是以弱堿性溶劑為吸收劑，吸收過程伴隨化學反應(yīng)過程，吸收H2S后的吸收劑經(jīng)增溫、減壓后得以再生，熱砷堿法即屬化學吸附法;氧化法是以堿性溶液為吸收劑，并加入載氧體為催化劑，吸收H2S，并將其氧化成單質(zhì)硫，氧化法以改良ADA法和栲膠法為代表。
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的煤氣從脫硫塔下部進入，在填料層內(nèi)與塔頂噴淋下的脫硫貧液發(fā)生反應(yīng)，將 H2S吸收脫除，凈化后的氣體從脫硫塔頂排出，然后在捕滴器內(nèi)脫除多余水分后送入車間使用。
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.
從塔頂淋下的溶液吸收 H2S后流入富液槽進行析硫，然后經(jīng)再生泵送至噴射再生槽與空氣反應(yīng)，溶液被氧化、再生后經(jīng)液位調(diào)節(jié)器流入貧液槽，再經(jīng)脫硫泵打入脫硫塔，連續(xù)脫硫。同時噴射再生槽內(nèi)產(chǎn)生的硫泡沫溢流到泡沫池過濾，濾出硫膏。
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、天然氣凈度可根據(jù)實際需要調(diào)節(jié)，可以平穩(wěn)的控制煤氣中的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、與干法脫硫相比，雖然投資是干法脫硫的2-3倍，但是運行成本低，1000Nm?實際脫硫費用為4元左右，避免了干式脫硫系統(tǒng)因脫硫劑再生后脫硫效果差及硫的吸附等原因而導(dǎo)致的生產(chǎn)成本增加的問題。
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、具有操作穩(wěn)定、運行安全，脫硫效率高的特點。脫硫效率可達到97%以上,脫硫后煤氣中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、如果脫硫催化劑是PDS或’888’,不但能脫除H2S而且能脫煤氣中占總硫含硫10%左右的部分有機硫。
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.
適用范圍編輯 播報
Scope of application: editing and broadcasting
適用于各種煤氣、沼氣和天然氣的脫硫(H2S)。
It is suitable for desulfurization (H2S) of various gas, biogas and natural gas.
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企業(yè)二維碼
2022-03-10
