Awọn ọna ti o dara julọ lati ṣe mimọ iṣuu soda Hydrosulfide daradara

Background

In the petrochemical industry, refineries typically produce acidic gases during processing operations such as vacuum distillation and catalytic cracking. These acidic gases generally consist of 85%-95% hydrogen sulfide, 3%-10% erogba dioxide, 2%-5% organic gases, and 0.5%-3% other components. Small and medium-sized refineries usually use a 30% caustic soda solution to absorb the acidic gases generated during refining. Caustic soda reacts with hydrogen sulfide to form Iṣuu soda Hydrosulfide. Nigbati ifọkansi iṣuu soda hydrosulfide ninu ojutu ba de 30%, ojutu naa ni ifọkansi siwaju sii. Lẹhin gbigbẹ ati ifọkansi, akoonu iṣuu soda hydrosulfide ninu ojutu le de ọdọ 70%, ati pe iṣuu soda hydrosulfide lẹhinna ni ilọsiwaju sinu awọn ege.

Bibẹẹkọ, wiwa carbon dioxide ninu awọn gaasi ekikan n ṣe ipilẹṣẹ awọn idoti iṣuu soda carbonate lakoko ilana itọju, eyiti o kan mimọ ti ọja hydrosulfide soda. Ni afikun, lilo ege sẹsẹ ti o ṣii lati gé iṣu soda hydrosulfide didà le ja si awọn aati oxidation pẹlu atẹgun ninu afẹfẹ, ti o nmu thiosulfate jade, eyiti o ni itara si ibajẹ ati pe o nira lati fipamọ. Ṣibẹ slicing tun duro lati tusilẹ awọn gaasi ibinu, ti n ba agbegbe iṣelọpọ jẹ.

Ọna ṣiṣiṣẹ

1. Iyapa Centrifugal:

Gbigbe ojutu ifọkansi iṣuu soda hydrosulfide lati inu ojò ifọkansi si centrifuge skru petele kan fun ipinya, gbigba iyọ crystallized ati didà monohydrate sodium hydrosulfide.

2. Idabobo igbale ati Itutu:

Firanṣẹ monohydrate sodium hydrosulfide didà, lẹhin iyapa iyọ crystallized, si ojò idabobo igbale fun alapapo. Lẹhinna, fa fifa soke sinu adiro paddle igbale fun itutu agbaiye ati imudara sinu awọn aṣọ tinrin.

3. Apo Aifọwọyi:

Awọn iwe iṣu soda hydrosulfide ti wa ni idasilẹ nipasẹ àtọwọdá irawọ kan sinu ẹrọ apo idalẹnu laifọwọyi fun iṣakojọpọ.

Pẹlupẹlu, ọna iwẹnumọ fun iṣuu soda hydrosulfide pẹlu awọn igbesẹ wọnyi:

1. Gbigbe ojutu iṣuu soda hydrosulfide ogidi lati inu ojò ifọkansi si centrifuge dabaru petele kan fun ipinya, gbigba iyọ crystallized ati didà monohydrate sodium hydrosulfide.

2. Fi iyọ crystallized ti a gba lati inu centrifugation si ẹrọ gbigbẹ, nibiti o ti kọkọ gbẹgbẹ ni apakan alapapo ti oke oke ti ẹrọ gbigbẹ, ati lẹhinna wọ inu itutu agbaiye ti ipele isalẹ fun itutu agbaiye ṣaaju ki o to gba bi oluranlowo itọju omi fun lilo nigbamii.

3. Didà monohydrate sodium hydrosulfide, lẹhin iyapa iyọ crystallized, ni a firanṣẹ si ojò idabobo igbale fun alapapo. Lẹhinna a ti fa soke sinu olutumọ paadi igbale fun itutu agbaiye ati imudara sinu awọn aṣọ tinrin.

4. Awọn ipele iṣuu soda hydrosulfide ti wa ni idasilẹ nipasẹ irawọ irawọ sinu ẹrọ apo-ipamọ laifọwọyi fun apoti.

5. Ipele gaasi ti a fa jade lati inu ojò idabobo igbale ati olutọju paddle paddle ti wa ni itọju nipasẹ eto itọju gaasi egbin.

ipari

Ọna yii kọkọ ya awọn iyọ ti a dapọ mọ crystallized, gẹgẹbi iṣuu soda carbonate, lati inu ojutu ogidi iṣuu soda hydrosulfide. Lẹhinna, didà monohydrate sodium hydrosulfide ti wa ni ṣinṣin taara sinu awọn aṣọ tinrin nipa lilo ẹrọ tutu igbale. Nikẹhin, ọja naa ti wa ni akopọ nipa lilo ẹrọ apamọ laifọwọyi. Ifojusi ti awọn idoti iṣuu soda kaboneti ninu ọja naa dinku lati 2.4% si 0.3%. Ilana itutu agbaiye ni a ṣe ni agbegbe titẹ odi, eyiti o dinku iṣeeṣe ti iṣuu soda hydrosulfide ti o wa sinu olubasọrọ pẹlu afẹfẹ ati gbigba ifoyina, ni idilọwọ imunadoko ọja. Lilo eto ti o wa ni kikun fun isọdọtun ti iṣuu soda hydrosulfide ṣe idaniloju pe ko si awọn gaasi ibinu ti o tu silẹ lakoko ilana naa, yago fun idoti keji si agbegbe. Awọn iwe iṣu soda hydrosulfide ti wa ni apo taara, ni idilọwọ ibajẹ lakoko ibi ipamọ. Ni afikun, kiikan yii ṣe ẹya ọna ti o rọrun, nilo ohun elo kekere, ati pe o ni awọn idiyele kekere.