CN203781841U - Sulfur tank tail gas treatment device for sulfur recovery device - Google Patents
Sulfur tank tail gas treatment device for sulfur recovery device Download PDFInfo
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- CN203781841U CN203781841U CN201420149377.9U CN201420149377U CN203781841U CN 203781841 U CN203781841 U CN 203781841U CN 201420149377 U CN201420149377 U CN 201420149377U CN 203781841 U CN203781841 U CN 203781841U
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- tail gas
- sulphur
- sulfur
- storing unit
- molten
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- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title claims abstract description 224
- 229910052717 sulfur Inorganic materials 0.000 title claims abstract description 132
- 239000011593 sulfur Substances 0.000 title claims abstract description 132
- 238000011084 recovery Methods 0.000 title claims abstract description 27
- 239000007789 gas Substances 0.000 claims abstract description 192
- 239000007788 liquid Substances 0.000 claims abstract description 23
- 238000010438 heat treatment Methods 0.000 claims abstract description 22
- 229910001882 dioxygen Inorganic materials 0.000 claims abstract description 6
- 239000005864 Sulphur Substances 0.000 claims description 88
- 238000012545 processing Methods 0.000 claims description 15
- 238000010521 absorption reaction Methods 0.000 claims description 14
- 230000009467 reduction Effects 0.000 claims description 11
- 238000013022 venting Methods 0.000 claims description 11
- 238000012544 monitoring process Methods 0.000 claims description 7
- 238000002485 combustion reaction Methods 0.000 claims description 5
- 230000002269 spontaneous effect Effects 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims description 4
- 239000000376 reactant Substances 0.000 claims description 3
- 230000009466 transformation Effects 0.000 abstract description 2
- 235000001508 sulfur Nutrition 0.000 description 112
- 238000000034 method Methods 0.000 description 21
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 16
- 230000008569 process Effects 0.000 description 15
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 9
- 229910052760 oxygen Inorganic materials 0.000 description 9
- 239000001301 oxygen Substances 0.000 description 9
- 238000000926 separation method Methods 0.000 description 9
- 238000007789 sealing Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008676 import Effects 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 206010021143 Hypoxia Diseases 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 2
- 208000018875 hypoxemia Diseases 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 150000003463 sulfur Chemical class 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000000809 air pollutant Substances 0.000 description 1
- 231100001243 air pollutant Toxicity 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005502 peroxidation Methods 0.000 description 1
- 238000005504 petroleum refining Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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Abstract
The utility model discloses a sulfur tank tail gas treatment device for a sulfur recovery device. The sulfur tank tail gas treatment device comprises a liquid sulfur storage system, an ejector, a tail gas catcher and a tail gas treatment unit, wherein the liquid sulfur storage system comprises a storage device and a liquid sulfur heating device, the liquid sulfur heating device is arranged inside or outside the storage device and used for heating liquid sulfur in the storage device, and an oxygen-free or low-oxygen gas inlet and an exhaust port are formed in the upper part of the storage device; the ejector is provided with a suction port, a power gas inlet and a gas outlet; the exhaust port of the storage device is connected to the suction port of the ejector through a pipeline, the gas outlet of the ejector is connected with a tail gas inlet of the tail gas catcher, and a tail gas outlet in the top of the tail gas catcher is connected to the tail gas treatment unit through a pipeline. The sulfur tank tail gas treatment device is compact in flow, reliable and convenient in implementation, and an old device can be used without slight transformation, so that new equipment investment is not needed.
Description
Technical field
The utility model belongs to sulfur recovery field, is specifically related to a kind of sulphur pond vent gas treatment retrieving arrangement.
Background technology
China advocates energy-saving and emission-reduction always, strictly controls Sulfur Dioxide In The Atmosphere quantity discharged.National departments concerned is being fermented revision discharge standard of air pollutants, intends requiring newly-built sulphur unit sulfur dioxide emissioning concentration to be less than 400mg/Nm
3(particular locality emission concentration is less than 200mg/Nm
3).Sinopec is actively implemented green low-carbon development strategy, strives for one of world-class important indicator using reducing sulphur unit SO 2 from fume emission concentration as oil refining plate, requires sulfur dioxide emissioning concentration in the 2015 (400mg/Nm that reaches world-class levels
3, particular locality emission concentration is less than 200mg/Nm
3), and " petroleum refining industry pollutant emission standard " exposure draft issues, and sulphur unit sulfur dioxide emissioning concentration is less than 400mg/Nm
3, particular locality emission concentration is less than 200mg/Nm
3imperative.
The technique of sulphur pond vent gas treatment is as follows at present: the molten sulfur from sulfur recovery facility reactor is sealed and is stored in sulphur pond by sulphur, molten sulfur temperature is generally between 130～150 DEG C, sulphur pond is generally normal pressure design, under such operational condition, molten sulfur can produce some sulphur steam, for reducing sulphur vapor evolution to pollution on the environment in atmosphere, molten sulfur arranges air suction inlet on pond, after configuration injector (pump) aspirates sulphur pond tail gas, send into tail gas burning furnace and burn, the SO producing after burning
2through chimney high altitude discharge, its flow process is shown in accompanying drawing 1.But according to domestic certain large-scale sulfur recovery facility measured data, sulphur pond tail gas increases chimney SO
2the influence value of discharge is 100～200mg/Nm
3..
In order to reach increasingly strict emission request, some explorations are also carried out for sulphur pond vent gas treatment technology.At present for a kind of improvement project of sulphur pond vent gas treatment be by sulphur pond tail gas for injector (pump) aspirate and send into washing tower, tackle sulphur steam by washing and reduce the sulphur content that enters tail gas burning furnace, this flow process is shown in accompanying drawing 2.The effect that a large amount of sulphur droplets is washed due to low temperature enters in water, thereby has reduced the absolute magnitude that enters tail gas burning furnace sulphur, to reducing chimney SO
2discharge have positive effect.But there are the following problems for this flow process: Molten sulphur is suspended in water, and the Molten sulphur of suspension is easy to be bonded in e-quipment and pipe and causes system jams to move continuously for a long time, and for guarantee system is moved continuously, it is one standby that this scheme flow process must complete one be opened.This scheme is just by pollution transportation in addition, and the sour water that washing produces could discharge after must processing.
Summary of the invention
The purpose of this utility model is the requirement for adapting to New emission standard, and a kind of novel sulphur pond tail gas treatment process is provided, and reduces facility investment, guarantees long-period stable operation, directly reduces the sulphur content that enters tail gas burning furnace tail gas, to tail gas funnel SO
2the direct impact of discharge reduces to zero, increases the output of sulphur simultaneously, reduces pollution to environment, has increased economic benefit when meeting the requirement of New emission standard.
The technical solution of the utility model is:
A kind of sulfur recovery facility sulphur pond exhaust gas processing device, it comprises molten sulfur stocking system, injector, tail gas gathering device and tail gas treating unit, described molten sulfur stocking system comprises storing unit and molten sulfur heating unit, inside or outside that described molten sulfur heating unit is arranged on described storing unit are stored in the Molten sulphur in storing unit in order to heating, and the top of described storing unit is provided with anaerobic or low-oxygen gas entrance and venting port; Described injector is provided with suction opening, power gas entrance and pneumatic outlet, the venting port of described storing unit is connected to the suction opening of described injector by pipeline, the pneumatic outlet of described injector is connected with the gas inlet of described tail gas gathering device, and the tail gas outlet at described tail gas gathering device top is connected to described tail gas treating unit by pipeline.
Storing unit can be for being located on the ground or underground sulphur pond or Molten sulphur storage receptacle, and concrete its can be sulphur pond (underground or ground), can be container, can be also the storing device of other all molten sulfurs that relatively seal.On storing unit, can be provided with the fluid level control device of Molten sulphur height of liquid level in monitoring and adjusting storing unit, it can arrange liquidometer liquid level and can automatically control by the molten sulfur amount of sending, liquidometer liquid level also can be set the high or low warning of liquid level is only set, also can, by liquidometer is on the spot set, also can control by other means.
On storing unit, can be provided with monitoring and regulate the temperature-control device of Molten sulphur temperature in storing unit, it can set temperature meter band indication warning function, also thermometer on the spot can be set, and main purpose is to prevent overtemperature.In storing unit, can also be provided with pressure warning unit.
On storing unit, can be provided with the fire fighting extinguisher that prevents the spontaneous combustion of storing unit internal liquid sulphur, it can arrange automatic steam for fire xtinguishing system, also manual steam for fire xtinguishing system can be set, fixed steam for fire xtinguishing system can be set, the steam for fire xtinguishing system of semi-fixed type also can be set.
The temperature-control device of the monitoring arranging on storing unit and adjusting Molten sulphur temperature, and prevent the fire fighting extinguisher of Molten sulphur spontaneous combustion, can ensure in the time of 180 DEG C of the head temperature > of storing unit, Molten sulphur to be put out a fire.
Storing unit is provided with anaerobic or hypoxemia (oxygen level < 5%) gas inlet, and this entrance can be one or more, and suction port can increase valve.
It can be also other type of heating that above-mentioned molten sulfur heating unit can adopt steam heating.
In order to make the temperature of molten sulfur keep being greater than 120 DEG C, the connecting pipeline between the connecting pipeline between storing unit venting port and injector suction opening and injector pneumatic outlet and tail gas gathering device gas inlet is equipped with heating or attemperator.
Described tail gas treating unit specifically can comprise reduction reactor, absorption tower and regenerator column; The gas inlet of described reduction reactor is connected with the tail gas outlet at described tail gas gathering device top, and the reactant outlet of reduction reactor is connected to the entrance on described absorption tower, and the absorption liquid outlet on described absorption tower is connected with the entrance of described regenerator column.
The plenum system that can also comprise sealing medium in this device, it comprises sealing medium pipeline, also can comprise the regulating and controlling loop of sealing medium flow.
A kind of method of utilizing device of the present utility model to process sulphur pond tail gas in sulfur recovery facility, the steps include: to store in sulfur recovery facility and in the storing unit of Molten sulphur, pass into anaerobic or few oxygen sealed gas, the top tail gas of described storing unit is imported to the suction opening of injector under the condition that is greater than 120 DEG C, the steam spraying into from the power gas entrance of injector or other gas are as the power of injector, the top tail gas of described storing unit is sucked to injector and delivers to tail gas gathering device by the pneumatic outlet of injector, and the sulfur-containing tail gas producing after separating molten sulfur in sulfur recovery facility is also delivered in described tail gas gathering device in the lump, the molten sulfur droplet of carrying secretly separate tail gas in described tail gas gathering device in is to reclaim most of sulphur, the tail gas that tail gas gathering device produces is finally delivered to tail gas treating unit and is processed.
The pressure of the anaerobic in the utility model or few oxygen sealed gas is >0.005MPa, wherein lacks the oxygen level < 5% of oxygen sealed gas; The steam spraying into from the power gas entrance of injector or the temperature of other gases are 130 DEG C～210 DEG C, and its pressure is 0.2～1.5MPa.
In large-scale sulfur recovery facility, the gas of sulfur-bearing is first through peroxidation, most of element sulphur generates elemental sulfur and enters molten sulfur storage facility (as molten sulfur stocking system), reacts and the tail gas that separates after elemental sulfur generally enters exhaust treatment system after tail gas gathering device trapping molten sulfur droplet.Molten sulfur temperature in storage facility is generally at 150～160 DEG C, the hydrogen sulfide that molten sulfur storage facility gas-phase space can exist sulphur steam and parse, leak to if do not processed in atmosphere and can cause larger impact to environment, this device utilizes the gas of anaerobic or hypoxemia to seal molten sulfur storer top, utilizes injector to pump it to tail gas gathering device import and processes.The concrete operation step of this device is as follows: sulphur is stored in the molten sulfur storing unit that temperature is greater than 120 DEG C, molten sulfur storing unit needs external heat to keep 120 DEG C of molten sulfur temperature >, the height of temperature can show by thermometer, and regulate the size of heating medium amount according to the height of temperature, may there is spontaneous combustion in molten sulfur storage facilities in explanation in the time of the abnormal overtemperature of occurrence temperature, need to open steam valve by fire fighting extinguisher and pass into steam-smoothering in molten sulfur storage facilities; The liquid level of molten sulfur storing unit is by controlling discharging or charging is controlled; Being greater than in the gas-phase space of molten sulfur storing unit of 120 DEG C exists molten sulfur steam also likely to volatilize trace hydrogen sulfide containing in molten sulfur, this partial tail gas is connected to the entrance of injector (pump) by pipeline, send into tail gas gathering device inlet pipeline by injector (pump).Injector (pump) need provide the pressure reduction of >0.005MPa, and the import and export of injector (pump) body and processing medium all need to arrange the hot facility of companion and ensure that medium temperature all needs 120 DEG C of >.For the tail gas that prevents molten sulfur storage facility top leaks, conventionally need to supplement sealing medium, sealing gas is anaerobic or few carrier of oxygen, adds the top of molten sulfur storage facility by pipeline.Molten sulfur storing unit gas-phase space is controlled at micro-negative pressure, by regulating the powered compressor air capacity of injector (pump) and adding the soakage of sealing medium to come controlled.The tail gas at molten sulfur storage facility top to connecting pipeline and injector (pump) to the pipeline of tail gas gathering device inlet pipeline of injector (pump) all needs external heat, conventionally can adopt steam jacket heating also can adopt other type of heating to ensure 120 DEG C of the interior temperature > of pipe.Under injector and the cooperation of other conditions, by the tail gas at molten sulfur storage element top with other device produce sulfur-containing tail gas or separation molten sulfur after tail gas together with import tail gas gathering device, the molten sulfur droplet of carrying secretly in tail gas in tail gas gathering device is separated and produces sulphur simple substance, and the tail gas after tail gas gathering device separates enters tail gas treating unit.Tail gas treating unit can comprise Reducing and absorption device, also can comprise incinerator, can adopt existing method to process tail gas.Sulphur steam major part in trap that the method can make molten sulfur storing unit top produce is recovered as elemental sulfur, and enter sulphur pond by recovery system, also have micro-sulphur steam to enter tail gas treating unit with original exhaust pipe, in the reduction reactor of tail gas treating unit, sulphur steam is reduced to H
2s also absorbs to solvent by absorption tower, has absorbed H
2the solvent of S goes out H by regenerator column stripping
2s, this circulation sour gas is further recovered as sulphur as sulfur recovery facility raw material.
Sulfur recycling installment taking 100,000 tons/year is set to example: the tail gas (50740m3/h) of a kind of flow process after Reaction Separation molten sulfur enters tail gas gathering device through piping, the molten sulfur droplet > 95% carrying secretly in tail gas in tail gas gathering device is separated, and the tail gas (50740m3/h) after separation enters tail gas treating unit.The tail gas (1600m3/h) at molten sulfur storage element top is sent to tail gas burning furnace, and the element sulphur of wherein carrying secretly increases the discharge 170mg/Nm3 of chimney SO2.And being tail gas (50740m3/h) after Reaction Separation molten sulfur, the application's flow process enters tail gas gathering device through piping, the tail gas (1600m3/h) at molten sulfur storage element top enters tail gas gathering device through injector and pipeline, the molten sulfur droplet > 95% carrying secretly in tail gas in tail gas gathering device is separated, and the tail gas (52340m3/h) after separation enters tail gas treating unit.The sulfur recovery rate > 98% of tail gas treating unit, it is original (1-95%)-(1-95%) × 98%=0.1% that the sulphur that the tail gas (1600m3/h) at molten sulfur storage element top is brought into enters incinerator, can reduce thus the discharge 169.83mg/Nm3 of chimney SO2.Effectively reduce the pollution of sulphur pond tail gas to atmosphere, calculate according to 100,000/year sulfur recovery facility, the tail gas amount that enters chimney is 91025Nm3/h, reduces the discharge 15.46kg/h of SO2.Taking 10 tons/year of sulphur units of domestic certain cover as example, the contrast of former technique and this patent sees the following form further:
This sulfur recovery facility sulphur pond exhaust gas processing device flow process is succinct, reliable, and it is convenient to implement.Old device can slightly be done transformation, and new device also need not increase facility investment compared with former flow process.
Brief description of the drawings
Fig. 1 is existing sulphur pond exhaust gas processing device schematic diagram.
Fig. 2 improves sulphur pond exhaust gas processing device schematic diagram.
Fig. 3 is the application's molten sulfur degasification and sulphur pond exhaust gas processing device schematic diagram.
In figure, 1-molten sulfur pond, 2-injector, 3-exhaust pipe, 4-tail gas gathering device, 5-tail gas treating unit, 6-sulphur simple substance, the tail gas of 7-sulfur-bearing steam, 8-steam or other gas, 9-tail gas and sulphur steam, 10-anaerobic or low-oxygen gas, 11-air suction inlet, 12-washing tower, 13-air+sulphur steam, 14-steam+air+sulphur steam, 15-air, 16-tail gas burning furnace, 17-steam+SO
2+ nitrogen, 18-chimney, 19-SO
2+ nitrogen, 20-sour water, 21-air+Determination of Trace Sulfur steam, 22-water.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described.
As shown in Figure 3, this sulfur recovery facility sulphur pond exhaust gas processing device comprises molten sulfur stocking system, injector, tail gas gathering device and tail gas treating unit.Wherein molten sulfur stocking system comprises storing unit, molten sulfur heating unit, fluid level control device, temperature-control device and fire fighting extinguisher.Storing unit can be sulphur pond (underground or ground), can be container, can be also the storing device of other all molten sulfurs that relatively seal.
Molten sulfur heating unit is arranged on the inside of storing unit or outside in order to add the Molten sulphur in heat storage devices, and it can adopt steam heating can be also other type of heating.Fluid level control device is located on storing unit, in order to Molten sulphur height of liquid level in monitoring and adjusting storing unit, it can arrange liquidometer liquid level and can automatically control by the molten sulfur amount of sending, liquidometer liquid level also can be set the high or low warning of liquid level is only set, also can, by liquidometer is on the spot set, also can control by other means.
Temperature-control device is located on storing unit, and in order to monitoring with regulate Molten sulphur temperature in storing unit, it can set temperature meter band indication warning function, also thermometer on the spot can be set, and main purpose is to prevent overtemperature.Fire fighting extinguisher is located on storing unit, in order to prevent the spontaneous combustion of storing unit internal liquid sulphur, it can arrange automatic steam for fire xtinguishing system, also manual steam for fire xtinguishing system can be set, fixed steam for fire xtinguishing system can be set, the steam for fire xtinguishing system of semi-fixed type also can be set.
The top of storing unit is provided with anaerobic or low-oxygen gas entrance and venting port, and anaerobic or low-oxygen gas entrance can be one or more, and suction port can increase valve.Injector is provided with suction opening, power gas entrance and pneumatic outlet, the venting port of storing unit is connected to the suction opening of described injector by pipeline, the pneumatic outlet of injector is connected with the gas inlet of described tail gas gathering device, and the connecting pipeline between the connecting pipeline between storing unit venting port and injector suction opening and injector pneumatic outlet and tail gas gathering device gas inlet is equipped with heating or attemperator.The tail gas outlet at tail gas gathering device top is connected to tail gas treating unit by pipeline.
Tail gas treating unit specifically comprises reduction reactor, absorption tower and regenerator column; The gas inlet of described reduction reactor is connected with the tail gas outlet at described tail gas gathering device top, and the reactant outlet of reduction reactor is connected to the entrance on described absorption tower, and the absorption liquid outlet on described absorption tower is connected with the entrance of described regenerator column.
Following example all adopts said apparatus to process.
Embodiment 1: referring to accompanying drawing 3, storing unit molten sulfur is equipped with the molten sulfur of 150 DEG C in pond, two ventages at top, molten sulfur pond need be used valve closes, prevent that air from entering in sulphur pond.Pass into top, molten sulfur pond with anaerobic or few oxygen (the oxygen level < 5%) sealed gas of 0.01Mpa, the venting port at top, sulphur pond is connected to injector suction opening with pipeline, molten sulfur liquid level is by sending molten sulfur control, molten sulfur pond arranges pressure alarm, and when operation, controlling the micro-negative pressure in molten sulfur pond does not have sulfur-bearing steam to leak.Top, molten sulfur pond set temperature is reported to the police, and top, molten sulfur pond arranges fixed steam for fire xtinguishing interface, opens steam for fire xtinguishing and enter sulphur pond and put out a fire in the time of 180 DEG C of head temperature >.Molten sulfur pond adopts for the concrete underground pond of liner, and molten sulfur pond adopts the saturation steam of 0.5MPa to heat to carry out holding temperature, and all pipelines that are connected with molten sulfur pond all adopt the steam jacket of 0.5MPa to be incubated.
Adopt 200 DEG C～steam of the system pipe network of 1.0MPa is as the power of injector, molten sulfur pond tail gas is sucked and delivers to tail gas gathering device inlet pipeline.Injector adopts the steam jacket insulation of 0.5MPa, and all pipelines all adopt the steam jacket insulation of 0.5MPa.Tail gas reclaims most of elemental sulfur in tail gas gathering device, discharges from the bottom of tail gas gathering device, and the sulphur steam of tail gas gathering device trace after treatment enters tail gas treating unit and carries out aftertreatment, finally discharges SO
2be less than 400mg/Nm
3the tail gas that meets emission standard.Be set to benchmark with 70,000 tons/year of Sulfur recycling installments, a kind of flow process is the tail gas (35520m after Reaction Separation molten sulfur
3/ h) entering tail gas gathering device through piping, the molten sulfur droplet > 95% carrying secretly in tail gas in tail gas gathering device is separated, the tail gas (35518m after separation
3/ h) enter tail gas treating unit.Tail gas (the 1220m at molten sulfur storage element top
3/ h) being sent to tail gas burning furnace, the element sulphur of wherein carrying secretly increases chimney SO
2discharge 180mg/Nm
3.The flow process of this patent is the tail gas (35520m after Reaction Separation molten sulfur
3/ h) enter tail gas gathering device through piping, the tail gas (1220m at molten sulfur storage element top
3/ h) entering tail gas tail gas gathering device through injector and pipeline, the molten sulfur droplet > 95% carrying secretly in tail gas in tail gas gathering device is separated, the tail gas (36740m after separation
3/ h) enter tail gas treating unit.The sulfur recovery rate > 98% of tail gas treating unit, the tail gas (1220m at molten sulfur storage element top
3it is original (1-95%)-(1-95%) × 98%=0.1% that the/sulphur h) brought into enters incinerator, reduces chimney SO
2discharge 179.82mg/Nm
3.Effectively reduce the pollution of sulphur pond tail gas to atmosphere, calculate according to 70,000/year sulfur recovery facility, the tail gas amount that enters chimney is 69390Nm3/h, reduces the discharge 12.48kg/h of SO2,52.42 tons/year of many recovery sulphur.
Embodiment 2: referring to accompanying drawing 3, storing unit molten sulfur is equipped with the molten sulfur of 120 DEG C in pond, original two ventages in top, molten sulfur pond need be used valve closes, prevent that air from entering in sulphur pond.Pass into top, molten sulfur pond with the anaerobic of 0.01Mpa or few oxygen sealed gas, the venting port at top, sulphur pond is connected to injector suction opening with pipeline, molten sulfur liquid level is by sending molten sulfur control, and molten sulfur pond arranges pressure alarm, and when operation, controlling the micro-negative pressure in molten sulfur pond does not have sulfur-bearing steam to leak.Top, molten sulfur pond set temperature is reported to the police, and top, molten sulfur pond arranges fixed steam for fire xtinguishing interface, opens steam for fire xtinguishing and enter sulphur pond and put out a fire in the time of 180 DEG C of head temperature >.Molten sulfur pond adopts for the concrete underground pond of liner, and molten sulfur pond adopts the saturation steam of 0.35MPa to heat to carry out holding temperature, and all pipelines that are connected with molten sulfur pond all adopt the steam jacket of 0.35MPa to be incubated.
Adopt 148 DEG C～steam of the system pipe network of 0.35MPa is as the power of injector, molten sulfur pond tail gas is sucked and delivers to tail gas gathering device inlet pipeline.Injector adopts the steam jacket insulation of 0.35MPa, and all pipelines all adopt the steam jacket insulation of 0.35MPa.Tail gas reclaims most of elemental sulfur in tail gas gathering device, discharges from the bottom of tail gas gathering device, and the sulphur steam of tail gas gathering device trace after treatment enters tail gas treating unit and carries out aftertreatment, finally discharges SO
2be less than 400mg/Nm
3the tail gas that meets emission standard.Be set to benchmark with 100,000 tons/year of Sulfur recycling installments, this scheme and existing technique sulphur pond tail gas send tail gas burning furnace can reduce chimney SO2 discharge 169.83mg/Nm3,129.86 tons/year of many recovery sulphur.
Claims (6)
1. a sulfur recovery facility sulphur pond exhaust gas processing device, it is characterized in that comprising molten sulfur stocking system, injector, tail gas gathering device and tail gas treating unit, described molten sulfur stocking system comprises storing unit and molten sulfur heating unit, inside or outside that described molten sulfur heating unit is arranged on described storing unit are stored in the Molten sulphur in storing unit in order to heating, and the top of described storing unit is provided with anaerobic or low-oxygen gas entrance and venting port; Described injector is provided with suction opening, power gas entrance and pneumatic outlet, the venting port of described storing unit is connected to the suction opening of described injector by pipeline, the pneumatic outlet of described injector is connected with the gas inlet of described tail gas gathering device, and the tail gas outlet at described tail gas gathering device top is connected to described tail gas treating unit by pipeline.
2. sulfur recovery facility sulphur according to claim 1 pond exhaust gas processing device, is characterized in that described storing unit is to be located on the ground or underground sulphur pond or Molten sulphur storage receptacle; Described storing unit is provided with monitoring and regulates the fluid level control device of Molten sulphur height of liquid level in storing unit.
3. sulfur recovery facility sulphur according to claim 1 pond exhaust gas processing device, it is characterized in that described storing unit is provided with the temperature-control device of Molten sulphur temperature in monitoring and adjusting storing unit, and prevent the fire fighting extinguisher of storing unit internal liquid sulphur spontaneous combustion.
4. sulfur recovery facility sulphur according to claim 1 pond exhaust gas processing device, is characterized in that the connecting pipeline between connecting pipeline and injector pneumatic outlet and the tail gas gathering device gas inlet between storing unit venting port and injector suction opening is equipped with heating or attemperator.
5. sulfur recovery facility sulphur according to claim 1 pond exhaust gas processing device, is characterized in that described tail gas treating unit comprises reduction reactor, absorption tower and regenerator column; The gas inlet of described reduction reactor is connected with the tail gas outlet at described tail gas gathering device top, and the reactant outlet of reduction reactor is connected to the entrance on described absorption tower, and the absorption liquid outlet on described absorption tower is connected with the entrance of described regenerator column.
6. sulfur recovery facility sulphur according to claim 1 pond exhaust gas processing device, is characterized in that being provided with pressure warning unit in described storing unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420149377.9U CN203781841U (en) | 2014-03-28 | 2014-03-28 | Sulfur tank tail gas treatment device for sulfur recovery device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420149377.9U CN203781841U (en) | 2014-03-28 | 2014-03-28 | Sulfur tank tail gas treatment device for sulfur recovery device |
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| CN203781841U true CN203781841U (en) | 2014-08-20 |
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| CN201420149377.9U Expired - Fee Related CN203781841U (en) | 2014-03-28 | 2014-03-28 | Sulfur tank tail gas treatment device for sulfur recovery device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104085860A (en) * | 2014-03-28 | 2014-10-08 | 中石化南京工程有限公司 | Sulphur recovery plant's sulphur pool tail gas treatment device |
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2014
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104085860A (en) * | 2014-03-28 | 2014-10-08 | 中石化南京工程有限公司 | Sulphur recovery plant's sulphur pool tail gas treatment device |
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