CN103585883B - Volatility solvent recovery technology from vent gas and device in a kind of oil plant sulphur unit collection solfatara - Google Patents
Volatility solvent recovery technology from vent gas and device in a kind of oil plant sulphur unit collection solfatara Download PDFInfo
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Abstract
The present invention relates to a kind of collection solfatara solvent recovery technology from vent gas and device, be volatility solvent recovery technology from vent gas and device in a kind of oil plant sulphur unit collection solfatara, first utilize escaping gas and elemental sulfur in jacket-cooled aggegation solfatara, condensed sulphur simple substance returns solfatara; Escaping gas, in super extra gravity settling reactor, under catalyst action, is desulfurized solution and absorbs, and be oxidized to elemental sulfur; Then carry secretly elemental sulfur, partial vulcanization hydrogen desulfuration solution at jet regeneration device oxidation regeneration, elemental sulfur flotation returns sulfur melting kettle, generates product sulphur, and cleaning of off-gas passes into super extra gravity settling reactor, discharge on settler top, finally lead to incinerator, the sulphur that removing is residual and sulphur component.Thus realize reclaiming escaping gas, generate product sulphur, and reduce the amount of leading to sulphur component in incinerator, realize sulfur dioxide and reduce discharging, and reduce the energy consumption of incinerator.
Description
Technical field
The present invention relates to a kind of collection solfatara solvent recovery technology from vent gas and device, specifically volatility solvent recovery technology from vent gas and device in a kind of oil plant sulphur unit collection solfatara.
Background technology
In prior art, for the processing method integrating volatility tail gas (main component is as hydrogen sulfide) in solfatara in oil plant sulphur unit, generally adopt without process directly discharge, or adopt the sulphur component entered in incinerator combustion tail gas, discharge after generating sulfur dioxide; No matter adopt any mode, all will cause the energy consumption of environmental pollution and incinerator.In prior art, cannot realize reclaiming volatility tail gas and generate product sulphur, reduce the amount of leading to sulphur component in incinerator, thus reach sulfur dioxide reduction of discharging, and reduce the object of the energy consumption of incinerator.
Summary of the invention
Technical problem to be solved by this invention is, overcome the shortcoming of prior art, volatility solvent recovery technology from vent gas and device in a kind of oil plant sulphur unit collection solfatara is provided, reclaim volatility tail gas and generate product sulphur, reduce the amount of leading to sulphur component in incinerator, thus reach sulfur dioxide reduction of discharging, and reduce the object of the energy consumption of incinerator.
The technical scheme that the present invention solves above technical problem is:
Volatility solvent recovery technology from vent gas in a kind of oil plant sulphur unit collection solfatara, carries out according to the following steps:
(i) from integrating the volatility tail gas (main component is as hydrogen sulfide) of solfatara and elemental sulfur through water jacket condensation, sulphur simple substance is back to solfatara, volatility tail gas enters from supergravity reactor top, gas is inhaled into supergravity reactor, by the segmentation of high speed centrifugation liquid and stator rectification mechanism, gas shearing-crushing is become microbubble and is dispersed in desulfuration solution, make rapid mass transfer, absorption and oxidation reaction occur between gas-liquid two-phase, the hydrogen sulfide that desulfuration solution absorbs gas phase is liquid phase, generate sulfidion, sulfidion is oxidized to elemental sulfur by catalyst; Purified gas is discharged from supergravity reactor top, towards incinerator, removes residual sulphur and sulphur component further;
(ii) from the sulfur removing pregnant solution liquid carrying sulphur secretly that supergravity reactor is discharged, after pump raised pressure, jet regeneration device is entered along pipeline, doctor solution forms jet by the nozzle of jet regeneration device at a high speed, and jet produces local decompression and attracts air, and gas-liquid two-phase fluid is in high velocity turbulent flow state by high speed dispersion, gas liquid interfacial area increases, doctor solution is oxidized by rapid regeneration, completes doctor solution by the conversion of rich solution to lean solution, is back to supergravity reactor by condensation cooling;
The sulfur granules of the sulfur-bearing liquid and formation of (iii) carrying sulphur simple substance secretly forms sulphur foam in the regeneration tank of jet regeneration device, overflow from the flotation of regeneration tank top, centrifugal pump is utilized to be delivered in sulfur melting kettle by sulphur foam, in sulfur melting kettle chuck, logical steam heats, when being heated to 60-90 DEG C, lather collapse, the elemental sulfur of molecule assembles increase rapidly, be separated with doctor solution, isolated clear liquid is discharged by clear liquid pipe and is reclaimed, the sulfur granules separated sinks down into the bottom of sulfur melting kettle, the particle sunk constantly accumulates, constantly heat simultaneously, when being heated to 120-140 DEG C, become the sulphur being easy to the molten condition flowed, released by sulfur discharging valve bottom sulfur melting kettle, blocks of solid sulphur is become after cooling.
Volatility device for recovering tail gas in oil plant sulphur unit collection solfatara, supergravity reactor, jet regeneration device and sulfur melting kettle; The air inlet on supergravity reactor top connects volatility tail gas and the elemental sulfur outlet of collection solfatara by the air inlet pipe being provided with condensed water sleeve pipe, liquid outlet bottom supergravity reactor is connected to the rich solution inlet on jet regeneration device top by the rich solution drain pipe being provided with rich solution pump, and the purified gas outlet on supergravity reactor top is connected to incinerator by pipeline; The lean solution outlet of jet regeneration device is connected to desulfurization lean solution groove by pipeline, desulfurization lean solution groove is connected in supergravity reactor by the pipeline being provided with lean pump and condenser, the sulphur foam outlet of jet regeneration device is connected to sulfur-bearing liquid bath by pipeline, sulfur-bearing liquid bath is connected in sulfur melting kettle by the pipeline being provided with sulphur pump, and the gas vent on jet regeneration device top is connected in supergravity reactor by pipeline; Sulfur melting kettle is connected to steam inlet and steam (vapor) outlet, bottom sulfur melting kettle, is provided with sulfur discharging valve.
The technical scheme that the present invention limits further is:
Volatility solvent recovery technology from vent gas in aforesaid oil plant sulphur unit collection solfatara, desulfuration solution composition comprises sodium carbonate and sodium acid carbonate, and sodium acid carbonate and concentration of sodium carbonate ratio are 2-8, and desulfuration solution pH value is 7.0-10.0, concentration of sodium carbonate is 4-10g/L, and the concentration of sodium acid carbonate is 10-50g/L.
Volatility solvent recovery technology from vent gas in aforesaid oil plant sulphur unit collection solfatara, catalyst concn is 10-40ppm, and catalytic temperature is 15-55 DEG C, and catalyst adopts sodium system high-efficiency desulfurization catalyst.
The invention has the beneficial effects as follows: the present invention can reduce the sulphur concentration towards incinerator, reduce the amount of leading to sulphur component in incinerator, and then reduce the concentration of offgas outlet sulfur dioxide, reduce the energy consumption of incinerator, and hydrogen sulfide can be processed into sulfur product, thus reach sulfur dioxide reduction of discharging, and reduce the object of the energy consumption of incinerator.
Accompanying drawing explanation
Fig. 1 is equipment connection schematic diagram of the present invention.
Detailed description of the invention
embodiment 1
Volatility solvent recovery technology from vent gas in a kind of oil plant sulphur unit collection solfatara, carries out according to the following steps:
(i) from the volatility tail gas of solfatara and elemental sulfur through water jacket condensation, sulphur simple substance is back to solfatara, escaping gas enters from super extra gravity settling reactor top, gas is inhaled into reactor, by the segmentation of high speed centrifugation liquid and stator rectification mechanism, gas shearing-crushing become microbubble and is dispersed in desulfuration solution, making to occur between gas-liquid two-phase rapid mass transfer and absorption, oxidation reaction.The hydrogen sulfide that desulfuration solution absorbs gas phase is liquid phase, generates sulfidion; Sulfidion is oxidized to elemental sulfur by catalyst.Described desulfuration solution main component is sodium carbonate and sodium acid carbonate, concentration of sodium carbonate is at 4-10g/L, sodium acid carbonate concentration is 10-50g/L, sodium acid carbonate and sodium carbonate ratio 2-8, pH7.0-10.0, catalyst concn 10-40ppm, temperature 15-55 DEG C, catalyst adopts the sodium system high-efficiency desulfurization catalyst of domestic maturation, has the extremely strong oxidation selectivity of hydrogen sulfide.
(ii) from supergravity reactor discharge is the desulfuration solution carrying sulphur and partial vulcanization hydrogen secretly, after pump raised pressure, jet regeneration device is entered along pipeline, doctor solution forms jet by the nozzle of injector at a high speed, this jet produces local decompression and attracts air, now gas-liquid two-phase fluid is in high velocity turbulent flow state at once by high speed dispersion, gas liquid interfacial area increases greatly, doctor solution is by fast and effeciently regenerating oxidation, thus complete doctor solution by the conversion of rich solution to lean solution, lowered the temperature by condensation, be back to super extra gravity settling reactor.The hydrogen sulfide that the air oxidation sucked is carried secretly becomes sulphur, and the sulphur simple substance carried secretly and the sulfur granules of formation are overflowed by flotation in regeneration tank, discharge from top.
(iii) be mingled with in the sulphur foam of sulphur simple substance, sulphur with the attachment of the molecule of elemental sulfur in the foam.Sulphur foam passes into sulfur melting kettle, utilizes centrifugal pump to be delivered in sulfur melting kettle by sulphur foam, and in sulfur melting kettle chuck, logical steam heats.When being heated to 60-90 DEG C, lather collapse, the elemental sulfur of molecule assembles increase rapidly, is separated with doctor solution.The inside of sulfur melting kettle is provided with a sulphur foam separator, and isolated clear liquid is discharged by clear liquid pipe and is recycled to desulphurization system and recycles; The sulfur granules separated sinks down into the bottom of sulfur melting kettle, and the particle of sinking constantly accumulates, and constantly heats simultaneously, when being heated to 120-140 DEG C, become the sulphur being easy to the molten condition flowed, released by sulfur discharging valve bottom sulfur melting kettle, after cooling, become blocks of solid sulphur.
By above method, the sulphur concentration towards incinerator can be reduced, and then reduce the concentration of offgas outlet sulfur dioxide, reduce the energy consumption of incinerator, and hydrogen sulfide can be processed into sulfur product.
embodiment 2
The present embodiment is volatility device for recovering tail gas in a kind of oil plant sulphur unit collection solfatara, and equipment connection as shown in Figure 1, comprises supergravity reactor 2, jet regeneration device 3 and sulfur melting kettle 4; The air inlet on supergravity reactor top connects volatility tail gas and the elemental sulfur outlet of collection solfatara 1 by the air inlet pipe 5 being provided with condensed water sleeve pipe, liquid outlet bottom supergravity reactor 2 is connected to the rich solution inlet on jet regeneration device 3 top by the rich solution drain pipe 7 being provided with rich solution pump 6, supergravity reactor 2) purified gas outlet on top is connected to incinerator by pipeline; The lean solution outlet of jet regeneration device 3 is connected to desulfurization lean solution groove 8 by pipeline, desulfurization lean solution groove 8 is connected in supergravity reactor 2 by the pipeline being provided with lean pump 9 and condenser 12, the sulphur foam outlet of jet regeneration device 3 is connected to sulfur-bearing liquid bath 10 by pipeline, sulfur-bearing liquid bath 10 is connected in sulfur melting kettle 4 by the pipeline being provided with sulphur pump 11, and the gas vent on jet regeneration device 3 top is connected in supergravity reactor 2 by pipeline; Sulfur melting kettle 4 is connected to steam inlet and steam (vapor) outlet, is provided with sulfur discharging valve bottom sulfur melting kettle 4, the sulphur of molten condition is released by sulfur discharging valve bottom sulfur melting kettle, after cooling, become blocks of solid sulphur.
Like this, by the volatility tail gas of solfatara and elemental sulfur by water jacket condensation, part elemental sulfur returns solfatara after condensation, and volatility tail gas passes into super extra gravity settling reactor.Under catalyst action ripe at home, volatility tail gas (main component hydrogen sulfide) is desulfurized solution and absorbs and be oxidized to elemental sulfur.Carry secretly elemental sulfur, hydrogen sulfide doctor solution settler bottom discharge, be transported to jet regeneration device through pump.Doctor solution and air generation oxidation reaction regenerate in a regenerator, complete doctor solution by the conversion of rich solution to lean solution.The sulphur simple substance flotation overflow in regeneration tank generated, through sulfur-melting technology, is processed into sulphur.Purified gas passes into super extra gravity settling reactor, discharges on reactor top, towards incinerator, removes residual sulphur and sulphur component further.
In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of application claims.
Claims (1)
1. a volatility solvent recovery technology from vent gas in oil plant sulphur unit collection solfatara, is characterized in that: carry out according to the following steps:
(i) from the collection volatility tail gas of solfatara and elemental sulfur through water jacket condensation, sulphur simple substance is back to solfatara, volatility tail gas enters from supergravity reactor top, gas is inhaled into supergravity reactor, by the segmentation of high speed centrifugation liquid and stator rectification mechanism, gas shearing-crushing is become microbubble and is dispersed in desulfuration solution, make rapid mass transfer, absorption and oxidation reaction occur between gas-liquid two-phase, the hydrogen sulfide that desulfuration solution absorbs gas phase is liquid phase, generate sulfidion, sulfidion is oxidized to elemental sulfur by catalyst; Purified gas is discharged from supergravity reactor top, towards incinerator, removes residual sulphur and sulphur component further;
(ii) from the desulfuration solution carrying sulphur and partial vulcanization hydrogen secretly that supergravity reactor is discharged, after pump raised pressure, jet regeneration device is entered along pipeline, doctor solution forms jet by the nozzle of jet regeneration device at a high speed, and jet produces local decompression and attracts air, and gas-liquid two-phase fluid is in high velocity turbulent flow state by high speed dispersion, gas liquid interfacial area increases, doctor solution is oxidized by rapid regeneration, completes doctor solution by the conversion of rich solution to lean solution, is back to supergravity reactor by condensation cooling;
The sulfur granules of the sulfur-bearing liquid and formation of (iii) carrying sulphur simple substance secretly forms sulphur foam in the regeneration tank of jet regeneration device, overflow from the flotation of regeneration tank top, centrifugal pump is utilized to be delivered in sulfur melting kettle by sulphur foam, in sulfur melting kettle chuck, logical steam heats, when being heated to 60-90 DEG C, lather collapse, the elemental sulfur of molecule assembles increase rapidly, be separated with doctor solution, isolated clear liquid is discharged by clear liquid pipe and is reclaimed, the sulfur granules separated sinks down into the bottom of sulfur melting kettle, the particle sunk constantly accumulates, constantly heat simultaneously, when being heated to 120-140 DEG C, become the sulphur being easy to the molten condition flowed, released by sulfur discharging valve bottom sulfur melting kettle, blocks of solid sulphur is become after cooling,
Described desulfuration solution composition comprises sodium carbonate and sodium acid carbonate, and described sodium acid carbonate and concentration of sodium carbonate ratio are 2-8, and described desulfuration solution pH value is 7.0-10.0, and described concentration of sodium carbonate is 4-10g/L, and the concentration of described sodium acid carbonate is 10-50g/L;
Described catalyst concn is 10-40ppm, and catalytic temperature is 15-55 DEG C, and catalyst adopts sodium system high-efficiency desulfurization catalyst.
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| CN104208992B (en) * | 2014-09-17 | 2017-02-01 | 宁波市化工研究设计院有限公司 | Method for desulfurizing acid gas containing hydrogen sulfide and recycling sulfur |
| CN107970735A (en) * | 2016-10-21 | 2018-05-01 | 中国石油化工股份有限公司 | The processing method and desulfuration adsorbent regeneration method for the tail gas that regenerative sulfur binding adsorbent produces |
| CN106744705B (en) * | 2017-02-16 | 2018-09-11 | 北京沃尔福环保科技有限公司 | A kind of tail gas of sulphur high gravity desulfurization device |
| CN107804829B (en) * | 2017-07-27 | 2023-10-20 | 杨承诣 | Method for preparing sulfur dioxide by utilizing byproducts of desulfurization system in coking industry |
| CN112473351A (en) * | 2020-11-26 | 2021-03-12 | 赛得利(九江)纤维有限公司 | Hypergravity washing and dust removing method |
| CN114602299B (en) * | 2022-03-08 | 2023-03-31 | 太原理工大学 | Treatment process for coking desulfurization by-product |
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