CN1919733A - Apparatus and method for recovering carbon disulfide in hydrogen sulfide gas during preparing process of carbon disulfide - Google Patents
Apparatus and method for recovering carbon disulfide in hydrogen sulfide gas during preparing process of carbon disulfide Download PDFInfo
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- CN1919733A CN1919733A CN 200610127381 CN200610127381A CN1919733A CN 1919733 A CN1919733 A CN 1919733A CN 200610127381 CN200610127381 CN 200610127381 CN 200610127381 A CN200610127381 A CN 200610127381A CN 1919733 A CN1919733 A CN 1919733A
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- hydrogen sulfide
- dithiocarbonic anhydride
- carbon disulphide
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Abstract
The invention discloses a recycling equipment and method of carbon disulfide in the hydrogen sulfide, which is characterized by the following: injecting hydrogen sulfide with carbon disulfide in the Claus recycling system directly; maintaining inner catalyst active property in the Claus reactor; sending the hydrogen sulfide with carbon disulfide in the adsorbing reactor to proceed adsorb and desorb operations alternately; transmitting the desorbed carbon disulfide in the refining unit to recycle carbon disulfide.
Description
Technical field
The present invention relates to the separation of gaseous mixture method, be specially the Apparatus and method for that reclaims dithiocarbonic anhydride in the hydrogen sulfide in a kind of carbon disulphide manufacture.
Background technology
At present, in the carbon disulphide manufacture process, comprise sulphur by what reactor came out, dithiocarbonic anhydride and stink damp mixture (process gas) enter primary separation tower separate after, unreacted sulphur is discharged at the bottom of by tower, and dithiocarbonic anhydride and hydrogen sulfide mixed gas are discharged by cat head and are cooled off, the dithiocarbonic anhydride that wherein is condensed is back to knockout tower and is used for washing, cool off remaining sulphur, directly drained into the Claus tail gases recovery system and carry the hydrogen sulfide that is approximately 0.5-8% dithiocarbonic anhydride secretly, like this, one side has caused a part of dithiocarbonic anhydride finished product to be converted into sulphur again and has reclaimed, market price and production cost analysis from dithiocarbonic anhydride and sulphur have caused very big financial loss; The dithiocarbonic anhydride of carrying secretly in the hydrogen sulfide belongs to organosulfur on the other hand, not only reduced the activity of claus reaction device inner catalyst, the rate of recovery of sulphur is descended, and more dithiocarbonic anhydride is difficult to be converted into sulphur, finally be combusted as sulfurous gas and be disposed in the air, polluted environment.
Summary of the invention
The present invention directly enters Crouse's recovery system and not only causes the certain economic loss in order to solve in the existing carbon disulphide production process the isolated hydrogen sulfide that contains dithiocarbonic anhydride, and has reduced the active of claus reaction device inner catalyst and polluted problem such as environment and the Apparatus and method for that reclaims dithiocarbonic anhydride in the hydrogen sulfide in a kind of carbon disulphide manufacture is provided.
The present invention adopts following technical scheme to realize: the equipment that reclaims dithiocarbonic anhydride in the hydrogen sulfide in the carbon disulphide manufacture, comprise at least two adsorptive reactors, the adsorptive reactor below is connected with the mixed gas inlet branch that communicates with mixed gas input house steward respectively, the adsorptive reactor below also is connected with the dithiocarbonic anhydride output arm that communicates with the mixed gas inlet branch, dithiocarbonic anhydride output arm links to each other with the Vacuum solutions sucking pump respectively, the adsorptive reactor top is respectively equipped with the hydrogen sulfide output tube, difference mounted valve on the every pipeline.Adsorptive reactor of the present invention is existing known products.
Utilize the equipment that reclaims dithiocarbonic anhydride in the hydrogen sulfide in the above-mentioned said carbon disulphide manufacture to finish the Apparatus and method for that reclaims dithiocarbonic anhydride in the hydrogen sulfide in the carbon disulphide manufacture, the hydrogen sulfide that contains dithiocarbonic anhydride that first knockout tower is separated is sent into the absorption of the transformation that hockets respectively at least two adsorptive reactors under system pressure and the condition near first knockout tower tower top temperature, the desorb operation, hydrogen sulfide after the absorption drains into Crouse's recovery system, dithiocarbonic anhydride mixed gas after the desorb enters refined unit and reclaims dithiocarbonic anhydride, and the adsorption efficiency of dithiocarbonic anhydride can reach 90-99%.Dithiocarbonic anhydride concentration after the described desorb is higher than the concentration of dithiocarbonic anhydride in the preceding mixed gas of adsorber.The quantity of adsorptive reactor of the present invention can determine that desorb can be adopted normal pressure desorb or vacuum desorption according to the size of throughput, recommends the preferential vacuum desorption that adopts.
Of the present inventionly also be provided with the adsorption-buffering jar between adsorptive reactor and Vacuum solutions sucking pump, the adsorption-buffering tank top is connected with the Vacuum solutions sucking pump with the hydrogen sulfide output tube respectively by pipeline.The adsorptive reactor that adsorption operations is finished is all pressed with the reactor that desorb takes place earlier, all press with the adsorption-buffering jar that is in vacuum state again, directly reactor is linked to each other with the Vacuum solutions sucking pump when effectively having avoided desorb and cause that production cost is higher, desorption process is slow.
Between mixed gas input house steward of the present invention and the adsorptive reactor absorption pretreater is set also; the hydrogen sulfide of being separated by first knockout tower that contains dithiocarbonic anhydride at first enters the absorption pretreater that the sulphur sorbent material is housed; micro-sulphur, hydrocarbon impurities and the macromolecular cpd of carrying secretly in the mixed gas can be separated, adsorptive reactor is played a protective role.
Compared with prior art; the present invention adopts the transformation suction type that the 0.5-8% dithiocarbonic anhydride in the hydrogen sulfide is reclaimed; not only improved economic benefit; and removed the organosulfur in the hydrogen sulfide, and make the acid gas concentration that enters Crouse improve, increased the activity of catalyst in reactor; be very beneficial for the carrying out of claus reaction; thereby improved sulfur recovery rate, and reduced the sulfur dioxide concentration in the final discharging tail gas, protected environment.
Description of drawings
Fig. 1 is a process flow sheet of the present invention
1,2,3-adsorptive reactor 4-adsorption-buffering jar 5-Vacuum solutions sucking pump 6-absorption pretreater 7-mixed gas input house steward 8-mixed gas inlet branch 9-dithiocarbonic anhydride output arm 10-hydrogen sulfide output tube 11-surge tank 12-vacuum pipe among the figure:
Embodiment
Reclaim the equipment of dithiocarbonic anhydride in the hydrogen sulfide in the carbon disulphide manufacture, comprise at least two adsorptive reactors, the adsorptive reactor below is connected with the mixed gas inlet branch 8 that communicates with mixed gas input house steward 7 respectively, the adsorptive reactor below also is connected with the dithiocarbonic anhydride output arm 9 that communicates with mixed gas inlet branch 8, dithiocarbonic anhydride output arm 9 links to each other with Vacuum solutions sucking pump 5 respectively, the adsorptive reactor top is respectively equipped with hydrogen sulfide output tube 10, difference mounted valve on the every pipeline; Also be provided with adsorption-buffering jar 4 between adsorptive reactor and Vacuum solutions sucking pump 5, adsorption-buffering jar 4 tops are connected with Vacuum solutions sucking pump 5 with hydrogen sulfide output tube 10 respectively by vacuum pipe 12; Absorption pretreater 6 also is set between mixed gas input house steward 7 and the adsorptive reactor.
Utilize the equipment that reclaims dithiocarbonic anhydride in the hydrogen sulfide in the above-mentioned said carbon disulphide manufacture to finish the Apparatus and method for that reclaims dithiocarbonic anhydride in the hydrogen sulfide in the carbon disulphide manufacture, the hydrogen sulfide that contains dithiocarbonic anhydride that first knockout tower is separated is sent into the absorption of the transformation that hockets respectively at least two adsorptive reactors under system pressure and the condition near first knockout tower tower top temperature, the desorb operation, hydrogen sulfide after the absorption drains into Crouse's recovery system, and the mixed gas that contains high density dithiocarbonic anhydride after the desorb enters refined unit and reclaims dithiocarbonic anhydride.
Shown in process flow sheet, with three adsorptive reactors is that example describes, the hydrogen sulfide that contains dithiocarbonic anhydride that first knockout tower is separated is sent into preadsorption treater 6 through mixed gas input house steward 7 sulphur in the gas mixture is removed under system pressure and the condition near first knockout tower tower top temperature, feed respectively then in three adsorptive reactors, carrying out adsorption operations in the reactor 1: by the absorption of the catalyzer in it, hydrogen sulfide then penetrates adsorption bed and drains into the claus tail-gas clean-up system by cat head through hydrogen sulfide output tube 10 dithiocarbonic anhydride under the condition of system pressure and approaching knockout tower tower top temperature just; Be in the state of finishing adsorption operations in the reactor 2, when carrying out the desorb operation, at first reactor 2 is communicated with the reactor 3 that is in desorption state by vacuum pipe 12 and all presses, and then all press with the adsorption-buffering jar 4 that is in vacuum state, make that finally the pressure in the reactor 2 reach the required pressure of desorb operation; And in reactor 3: under the effect of Vacuum solutions sucking pump 5, make to be in negative pressure state in the reactor, thereby make the carbon disulfide gas desorb of being adsorbed and after dithiocarbonic anhydride output arm 9 drains into surge tank 11 at the bottom of the tower, enter follow-up refined unit by catalyzer, bottom by rectifying tower enters, and utilizes the function of rectifying tower to reclaim dithiocarbonic anhydride then.Switching between pressure-desorb operation of the absorption of carrying out simultaneously in above-described three reactors-all and the three all is by automatic controlling system.According to the big or small adsorptive reactor of throughput can 2,3,4 or more numbers make up, entering adsorptive reactor can be from entering, also can under enter, the direction that goes out adsorptive reactor is opposite with import to get final product (go out under enterprising or under go out on advancing can).
Claims (8)
1, reclaims the equipment of dithiocarbonic anhydride in the hydrogen sulfide in a kind of carbon disulphide manufacture, it is characterized in that: comprise at least two adsorptive reactors, the adsorptive reactor below is connected with the mixed gas inlet branch (8) that communicates with mixed gas input house steward (7) respectively, the adsorptive reactor below also is connected with the dithiocarbonic anhydride output arm (9) that communicates with mixed gas inlet branch (8), dithiocarbonic anhydride output arm (9) links to each other with Vacuum solutions sucking pump (5) respectively, the adsorptive reactor top is respectively equipped with hydrogen sulfide output tube (10), difference mounted valve on the every pipeline.
2, reclaim the equipment of dithiocarbonic anhydride in the hydrogen sulfide in the carbon disulphide manufacture according to claim 1, it is characterized in that: also be provided with adsorption-buffering jar (4) between adsorptive reactor and Vacuum solutions sucking pump (5), adsorption-buffering jar (4) top is connected with Vacuum solutions sucking pump (5) with hydrogen sulfide output tube (10) respectively by vacuum pipe (12).
3, reclaim the equipment of dithiocarbonic anhydride in the hydrogen sulfide in the carbon disulphide manufacture according to claim 1 and 2, it is characterized in that: absorption pretreater (6) also is set between mixed gas input house steward (7) and the adsorptive reactor.
4, utilize the equipment that reclaims dithiocarbonic anhydride in the hydrogen sulfide in the carbon disulphide manufacture as claimed in claim 1 to finish the method that reclaims dithiocarbonic anhydride in the hydrogen sulfide in the carbon disulphide manufacture, it is characterized in that: the hydrogen sulfide that contains dithiocarbonic anhydride that first knockout tower is separated is sent into the absorption of the transformation that hockets respectively at least two adsorptive reactors under system pressure and the condition near first knockout tower tower top temperature, the desorb operation, hydrogen sulfide after the absorption drains into Crouse's recovery system, and the dithiocarbonic anhydride mixed gas after the desorb enters refined unit and reclaims dithiocarbonic anhydride.
5, reclaim the method for dithiocarbonic anhydride in the hydrogen sulfide in the carbon disulphide manufacture according to claim 4, it is characterized in that dithiocarbonic anhydride is adsorbed the back by Vacuum solutions sucking pump (5) desorb in adsorptive reactor.
6, reclaim the method for dithiocarbonic anhydride in the hydrogen sulfide in the carbon disulphide manufacture according to claim 5, it is characterized in that the adsorptive reactor elder generation that adsorption operations is finished all presses with the reactor of generation desorb, all presses with the adsorption-buffering jar (4) that is in vacuum state again.
7, reclaim the method for dithiocarbonic anhydride in the hydrogen sulfide in the carbon disulphide manufacture according to claim 4, it is characterized in that at first entering the absorption pretreater (6) that the sulphur sorbent material is housed by the hydrogen sulfide that contains dithiocarbonic anhydride that first knockout tower is separated.
8, reclaim the method for dithiocarbonic anhydride in the hydrogen sulfide in the carbon disulphide manufacture according to claim 4, it is characterized in that being equipped with in the adsorptive reactor the special-purpose sorbent material of dithiocarbonic anhydride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610127381 CN1919733A (en) | 2006-09-18 | 2006-09-18 | Apparatus and method for recovering carbon disulfide in hydrogen sulfide gas during preparing process of carbon disulfide |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610127381 CN1919733A (en) | 2006-09-18 | 2006-09-18 | Apparatus and method for recovering carbon disulfide in hydrogen sulfide gas during preparing process of carbon disulfide |
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| CN1919733A true CN1919733A (en) | 2007-02-28 |
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| CN 200610127381 Pending CN1919733A (en) | 2006-09-18 | 2006-09-18 | Apparatus and method for recovering carbon disulfide in hydrogen sulfide gas during preparing process of carbon disulfide |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101829484A (en) * | 2010-05-27 | 2010-09-15 | 重庆紫光化工股份有限公司 | Tail gas recovery method of carbon bisulfide refining system |
| CN107082427A (en) * | 2017-04-19 | 2017-08-22 | 苏州市兴鲁空分设备科技发展有限公司 | Carbon disulfide retracting device |
-
2006
- 2006-09-18 CN CN 200610127381 patent/CN1919733A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101829484A (en) * | 2010-05-27 | 2010-09-15 | 重庆紫光化工股份有限公司 | Tail gas recovery method of carbon bisulfide refining system |
| CN101829484B (en) * | 2010-05-27 | 2012-06-06 | 重庆紫光化工股份有限公司 | Tail gas recovery method of carbon bisulfide refining system |
| CN107082427A (en) * | 2017-04-19 | 2017-08-22 | 苏州市兴鲁空分设备科技发展有限公司 | Carbon disulfide retracting device |
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