濕法脫硫技能簡介
Introduction to wet desulfurization skills
濕法脫硫技能是使氣體中的硫化氫在富含催化劑的液相中氧化成單質(zhì)硫的一種脫硫技能。該技能的流程比照簡略，能夠直接得到元素硫。首要用于處理二氧化碳濃度高的氣體進(jìn)行脫硫，比方沼氣。該技能的關(guān)鍵在于設(shè)備某些參數(shù)挑選是不是契合實(shí)際需要。
Wet desulfurization technology is a desulfurization technology to oxidize hydrogen sulfide in gas into elemental sulfur in liquid phase rich in catalyst. The process of this skill is relatively simple, and elemental sulfur can be obtained directly. It is mainly used to process gases with high carbon dioxide concentration for desulfurization, such as biogas. The key to this skill lies in whether the selection of some parameters of the equipment meets the actual needs.
2.1脫硫基本原理
2.1 basic principle of desulfurization
在有催化劑參加下的脫硫，可分為兩個(gè)進(jìn)程：吸收和再生。吸收進(jìn)程首要發(fā)生在吸收硫化氫的脫硫塔內(nèi)。首要反響如下
Desulfurization with catalyst can be divided into two processes: absorption and regeneration. The absorption process mainly occurs in the desulfurization tower that absorbs hydrogen sulfide. The primary response is as follows
2.2濕法脫硫技能流程
2.2 wet desulfurization skill process
脫硫液以碳酸鈉作為堿源，總堿度為0.3～0.6N，NaHCO3：Na2CO3≥5且pH值為8.2～8.5；催化劑溶解后混入脫硫液。
The desulfurization solution uses sodium carbonate as the alkali source, the total alkalinity is 0.3 ~ 0.6N, nahco3:na2co3 ≥ 5 and the pH value is 8.2 ~ 8.5; The catalyst is dissolved and mixed with desulfurization solution.
工作時(shí)，含硫沼氣從脫硫塔底部進(jìn)入，與脫硫液逆向觸摸，硫化氫被堿液吸收，凈化后的沼氣從塔頂排出。吸收硫化氫后的脫硫液成為富液，流經(jīng)富液槽，再被泵打入再生槽，與空氣混合進(jìn)行再生，其間硫以單質(zhì)形態(tài)浮于槽頂，溢流到硫膏槽。再生后的脫硫液成為貧液，恢復(fù)脫硫才能，經(jīng)貧液槽，再被泵循環(huán)進(jìn)入脫硫塔持續(xù)脫硫。
During operation, the sulfur-containing methane enters from the bottom of the desulfurization tower and touches the desulfurization solution in the opposite direction. Hydrogen sulfide is absorbed by the alkali solution, and the purified methane is discharged from the top of the tower. The desulfurized liquid after absorbing hydrogen sulfide becomes rich liquid, flows through the rich liquid tank, is pumped into the regeneration tank, and is mixed with air for regeneration. During this period, sulfur floats on the top of the tank in the form of simple substance and overflows to the sulfur paste tank. After regeneration, the desulfurized liquid becomes lean liquid, and the desulfurized liquid can be recovered. After passing through the lean liquid tank, it is pumped into the desulfurizing tower for continuous desulfurization.
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