CN105776137A - Method for supplementing sulfur to CO shift catalyst by replacing carbon disulfide with liquid sulfur - Google Patents
Method for supplementing sulfur to CO shift catalyst by replacing carbon disulfide with liquid sulfur Download PDFInfo
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- CN105776137A CN105776137A CN201610087995.9A CN201610087995A CN105776137A CN 105776137 A CN105776137 A CN 105776137A CN 201610087995 A CN201610087995 A CN 201610087995A CN 105776137 A CN105776137 A CN 105776137A
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- sulfur
- furnace gas
- molten sulfur
- calcium carbide
- carbide furnace
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/50—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/04—Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
- C01B2203/0435—Catalytic purification
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- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Inorganic Chemistry (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention relates to a method for supplementing sulfur to a CO shift catalyst by replacing carbon disulfide with liquid sulfur.The method comprises the steps that in the production process of preparing ethylene glycol from calcium carbide furnace gas, liquid sulfur produced in the sulfur recovery section is conveyed to a liquid sulfur storage tank of the furnace gas conversion section, liquid sulfur in the liquid sulfur storage tank is conveyed to an inlet of a detoxification tower through a pump, a chemical reaction is conducted in the detoxification tower (Please see the formula in the description.), H2S produced in the detoxification tower is added to feed gas of the calcium carbide furnace gas, the H2S content in the calcium carbide furnace gas meets the technology requirements of calcium carbide furnace gas conversion and purification, desulfuration of the CO shift catalyst is avoided, the conversion efficiency and the quality of converted gas of the calcium carbide furnace gas are improved, and the risk factors on on-site operation are reduced.According to the method for supplementing sulfur to the CO shift catalyst by replacing carbon disulfide with liquid sulfur, the number of devices is small, the technology is simple, reasonable and easy to implement, and the method can be widely applied to production of the shift catalyst of which the feed gas lacks sulfur.
Description
Technical field
The present invention relates to a kind of molten sulfur and replace the method that Carbon bisulfide mends sulfur to CO transformation catalyst.
Background technology
In the production process of calcium carbide furnace gas preparing ethylene glycol, the unstripped gas that flue gas cleaning workshop section uses is calcium carbide furnace gas, the catalyst adopted is antisulphour Low Temperature Transform Catalyst, hydrogen sulfide content deficiency can cause the devulcanization of antisulphour Low Temperature Transform Catalyst, at present, in order to maintain the properly functioning of furnace gas transformation system in the production of prior art, what technique adopted is supplement CS2 to furnace gas transformation system, by chemical reaction: CS2+H2===CH4+H2S meets catalyst and prevents catalyst devulcanization.CS2 very easily fires, the explosive mixture that its steam can be wide with air forming range；Contact heat, Mars, flame or the blast of oxidant easy firing；Decomposes produces poisonous sulfide flue gas；React acutely with aluminum, zinc, potassium, fluorine, chlorine, azide etc., have combustion explosion dangerous；High speed impact, flow, agitate after can because of produce electrostatic spark electric discharge cause combustion explosion；Its steam is heavier than air, and can be diffused into quite remote place in lower, and chance burning things which may cause a fire disaster can catch fire and strile-back.Therefore there is huge potential safety hazard in execute-in-place.Calcium carbide furnace gas purifies transformation system it is contemplated that it is extremely urgent for replacing benefit Carbon bisulfide technique with fluid infusion sulfur.
Summary of the invention
For solving because mending the safety problem that Carbon bisulfide exists in prior art, the present invention provides a kind of molten sulfur to replace the technique that Carbon bisulfide mends sulfur to CO transformation catalyst.
The technical solution used in the present invention is: a kind of molten sulfur replaces the method that Carbon bisulfide mends sulfur to CO transformation catalyst, in the production process of calcium carbide furnace gas preparing ethylene glycol, the molten sulfur that sulfur recovery workshop section produces is transported in the molten sulfur storage tank of furnace gas conversion section, by pump, the molten sulfur in molten sulfur storage tank is delivered to detoxification tower entrance, detoxification tower occurs chemical reaction: H2+S====H2S, the H2S produced in detoxification tower is filled in the unstripped gas of calcium carbide furnace gas, make the H2S content in calcium carbide furnace gas meet calcium carbide furnace gas conversion and the technological requirement purified.Adopt the devulcanization that this method avoid CO transformation catalyst, improve the conversion efficiency of calcium carbide furnace gas and the quality of conversion gas, reduce the risk factor of execute-in-place.
Described replaces, with molten sulfur, the method that Carbon bisulfide mends sulfur to CO transformation catalyst, and the pipeline of its conveying molten sulfur adopts chuck pipeline.
Described replaces, with molten sulfur, the method that Carbon bisulfide mends sulfur to CO transformation catalyst, and the chuck pipeline of its conveying molten sulfur adopts steam insulation, and Steam pressure control is at 0.15 ~ 0.38MPa(G).Hypertonia will cause that molten sulfur thickness cannot be carried, and hypotony is likely to cause heat loss to cause sulfur crystallization.
Described replaces, with molten sulfur, the method that Carbon bisulfide mends sulfur to CO transformation catalyst, and the delivery temperature of its molten sulfur controls at 122 ~ 150 DEG C.Owing to Molten sulphur starts crystallization occur at 119 DEG C, and cause becoming very sticky thick owing to molecular structure changes more than 150 DEG C, even cannot proper flow, it is therefore necessary to the strict delivery temperature that controls is within the scope of 122 ~ 150 DEG C.
Described replaces, with molten sulfur, the method that Carbon bisulfide mends sulfur to CO transformation catalyst, and it is at one molten sulfur storage tank of furnace gas conversion section isolated system.Owing to needs liquid sulfur content is only small, directly carry liquid sulfur to seem very improper from sulfur recovery process dosing pump to transformation system, pipeline is too little to easily go wrong, and adopts DN10 pipe flow speed too low, flow distance only 60 ~ 70m per hour, from too far away very unfavorable to producing control.Therefore being considered as individually at one molten sulfur storage tank of conversion section field device, volume is about 1.5m3, actual storage amount 1.2m3, low level reserves 0.2m3, can use about 155 hours every time.
Molten sulfur storage tank adopts jacket heat-preservation.Molten sulfur is directly drawn from fairlead, surrenders by metering transport pump to the main heat of transformation system and converges entrance detoxification tower on mouthful furnace gas pipeline with furnace gas.
Dosing pump selects: flow 0 ~ 10L/h, stepless adjustable flow, jacket heat-preservation.Molten sulphur density is about 1.8kg/L, temperature 130 ~ 150 DEG C, dosing pump outlet pressure 2.2MPa.
Beneficial effects of the present invention: the present invention mends sulfur by replacing Carbon bisulfide with molten sulfur to CO transformation catalyst, the H2S content in calcium carbide furnace gas is made to meet calcium carbide furnace gas conversion and the technological requirement purified, avoid the devulcanization of CO transformation catalyst, improve the conversion efficiency of calcium carbide furnace gas and the quality of conversion gas, reduce the risk factor of execute-in-place.Present device is few, technique advantages of simple, it is easy to implements, can be widely used for the production of the transformation catalyst of unstripped gas a lack of sulfur.
Accompanying drawing explanation
Fig. 1 is the process chart of the present invention.
In Fig. 1: 1 be molten sulfur storage tank, 2 to be molten sulfur dosing pump, a be from the molten sulfur of sulfur recovery workshop section, b be that molten sulfur removes detoxification tower entrance.
Detailed description of the invention
With reference to accompanying drawing 1, a kind of molten sulfur replaces the method that Carbon bisulfide mends sulfur to CO transformation catalyst, in the production process of calcium carbide furnace gas preparing ethylene glycol, the molten sulfur a that sulfur recovery workshop section produces is transported in the molten sulfur storage tank 1 of furnace gas conversion section, by pump 2, the molten sulfur in molten sulfur storage tank is delivered to detoxification tower entrance b, detoxification tower occurs chemical reaction: H2+S====H2S, the H2S produced in detoxification tower is filled in the unstripped gas of calcium carbide furnace gas, make the H2S content in calcium carbide furnace gas meet calcium carbide furnace gas conversion and the technological requirement purified.Adopt the devulcanization that this method avoid CO transformation catalyst, improve the conversion efficiency of calcium carbide furnace gas and the quality of conversion gas, reduce the risk factor of execute-in-place.
Another embodiment is different in that, the pipeline of its conveying molten sulfur adopts chuck pipeline.
Another embodiment is different in that, the chuck pipeline of its conveying molten sulfur adopts steam insulation, and Steam pressure control is at 0.15MPa(G).
Another embodiment is different in that, the chuck pipeline of its conveying molten sulfur adopts steam insulation, and Steam pressure control is at 0.2MPa(G).
Another embodiment is different in that, the chuck pipeline of its conveying molten sulfur adopts steam insulation, and Steam pressure control is at 0.3MPa(G).
Another embodiment is different in that, the chuck pipeline of its conveying molten sulfur adopts steam insulation, and Steam pressure control is at 0.38MPa(G).
Another embodiment is different in that, the delivery temperature of its molten sulfur controls at 122 DEG C.
Another embodiment is different in that, the delivery temperature of its molten sulfur controls at 125 DEG C.
Another embodiment is different in that, the delivery temperature of its molten sulfur controls at 130 DEG C.
Another embodiment is different in that, the delivery temperature of its molten sulfur controls at 140 DEG C.
Another embodiment is different in that, the delivery temperature of its molten sulfur controls at 150 DEG C.
Another embodiment is different in that, it is at one molten sulfur storage tank of furnace gas conversion section isolated system.Individually at one molten sulfur storage tank of conversion section field device, volume is about 1.5m3, actual storage amount 1.2m3, low level reserves 0.2m3, can use about 155 hours every time.
Another embodiment is different in that, molten sulfur storage tank adopts jacket heat-preservation.Molten sulfur is directly drawn from fairlead, surrenders by metering transport pump to the main heat of transformation system and converges entrance detoxification tower on mouthful furnace gas pipeline with furnace gas.
Another embodiment is different in that, conveyance conduit adopts DN4 pipe, jacket heat-preservation.
Another embodiment is different in that, dosing pump selects: flow 0 ~ 10L/h, stepless adjustable flow, jacket heat-preservation.Molten sulphur density is about 1.8kg/L, temperature 130 ~ 150 DEG C, dosing pump outlet pressure 2.2MPa.
It is likely to the problem caused: owing to Molten sulphur starts crystallization occur at 119 DEG C, and cause becoming very sticky thick owing to molecular structure changes more than 150 DEG C, even cannot proper flow, therefore delivery temperature must strictly be controlled within the scope of 122 ~ 150 DEG C, being incubated with jacket steam during pipeline conveying, steam pressure should strictly maintain 0.15 ~ 0.38MPa(G) in scope.Even so, owing to the access point temperature converged with furnace gas is more than 200 DEG C, the heat of pipeline is delivered to molten sulfur adapter end and causes local temperature between 150 ~ 270 DEG C, it would be possible to causes molten sulfur to become thickness and cannot flow, results in blockage.Therefore junction point needs to take special effective measures to access the appearance to avoid problem.
Claims (5)
1. replace the Carbon bisulfide method to CO transformation catalyst benefit sulfur with molten sulfur for one kind, it is characterized in that: in the production process of calcium carbide furnace gas preparing ethylene glycol, the molten sulfur that sulfur recovery workshop section produces is transported in the molten sulfur storage tank of furnace gas conversion section, by pump, the molten sulfur in molten sulfur storage tank is delivered to detoxification tower entrance, detoxification tower occurs chemical reaction: H2+S====H2S, the H2S produced in detoxification tower is filled in the unstripped gas of calcium carbide furnace gas, make the H2S content in calcium carbide furnace gas meet calcium carbide furnace gas conversion and the technological requirement purified.
2. molten sulfur according to claim 1 replaces the method that Carbon bisulfide mends sulfur to CO transformation catalyst, it is characterised in that: the pipeline of conveying molten sulfur adopts chuck pipeline.
3. molten sulfur according to claim 2 replaces the method that Carbon bisulfide mends sulfur to CO transformation catalyst, it is characterised in that: the chuck pipeline of conveying molten sulfur adopts steam insulation, and Steam pressure control is at 0.15 ~ 0.38MPa(G).
4. the method mending sulfur to CO transformation catalyst with molten sulfur replacement Carbon bisulfide according to claim 1-3 any claim, it is characterised in that: the delivery temperature of molten sulfur controls at 122 ~ 150 DEG C.
5. molten sulfur according to claim 1 replaces the method that Carbon bisulfide mends sulfur to CO transformation catalyst, it is characterised in that: at one molten sulfur storage tank of furnace gas conversion section isolated system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610087995.9A CN105776137A (en) | 2016-02-17 | 2016-02-17 | Method for supplementing sulfur to CO shift catalyst by replacing carbon disulfide with liquid sulfur |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610087995.9A CN105776137A (en) | 2016-02-17 | 2016-02-17 | Method for supplementing sulfur to CO shift catalyst by replacing carbon disulfide with liquid sulfur |
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| CN105776137A true CN105776137A (en) | 2016-07-20 |
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| CN201610087995.9A Pending CN105776137A (en) | 2016-02-17 | 2016-02-17 | Method for supplementing sulfur to CO shift catalyst by replacing carbon disulfide with liquid sulfur |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102584533A (en) * | 2012-01-18 | 2012-07-18 | 新疆天业（集团）有限公司 | Superlow-sulfur and high-concentration CO gas exchange sulfur supplementation and cyclic utilization method |
| CN102745646A (en) * | 2012-06-05 | 2012-10-24 | 新疆天业（集团）有限公司 | Method for replenishing sulfureted hydrogen during CO transformation production process |
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2016
- 2016-02-17 CN CN201610087995.9A patent/CN105776137A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102584533A (en) * | 2012-01-18 | 2012-07-18 | 新疆天业（集团）有限公司 | Superlow-sulfur and high-concentration CO gas exchange sulfur supplementation and cyclic utilization method |
| CN102745646A (en) * | 2012-06-05 | 2012-10-24 | 新疆天业（集团）有限公司 | Method for replenishing sulfureted hydrogen during CO transformation production process |
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Application publication date: 20160720 |
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