CN103073144B - Self-heating heat-pump energy-saving device for lurgi furnace gasification sewage and method for sewage pretreatment with device - Google Patents
Self-heating heat-pump energy-saving device for lurgi furnace gasification sewage and method for sewage pretreatment with device Download PDFInfo
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- CN103073144B CN103073144B CN201310031807.7A CN201310031807A CN103073144B CN 103073144 B CN103073144 B CN 103073144B CN 201310031807 A CN201310031807 A CN 201310031807A CN 103073144 B CN103073144 B CN 103073144B
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Abstract
The invention relates to a sewage pretreatment device and a method for sewage pretreatment with the device, in particular to a self-heating heat-pump energy-saving device for lurgi furnace gasification sewage and a method for the sewage pretreatment with the device. The problems that the existing lurgi furnace sewage treatment technology is high in energy consumption and operating cost, and equipment is blocked easily are solved. The self-heating heat-pump energy-saving device for the lurgi furnace gasification sewage comprises a vacuum extraction and sedimentation compound tower, an evacuating device, a heat exchange knockout tower, a circulating pump, an aqua-ammonia pump and a sewage circulating pump. The method comprises the steps that hot sewage enters the vacuum extraction and sedimentation compound tower; sensible heat in the sewage entering the vacuum extraction and sedimentation compound tower is converted to gasification latent heat by pressure reduction through the evacuating device; pressure is recovered after the sewage enters the heat exchange knockout tower; the latent heat is released to be converted to the sensible heat; and the heat is sent back by heat-exchange heating low-temperature sewage for cycling. The device and the method can be applied to pretreatment of the lurgi furnace gasification sewage.
Description
Technical field
The present invention relates to a kind of sewage pre-treatment device and utilize it to carry out the pretreated method of sewage.
Background technology
Lurgi gasifier is that a kind of application is more, the stable gasification type of furnace, and the conventional type of furnace is the throughput of daily output town gas 480,000 standard cubic meter, approximately 500 tons, coal processes raw material day.Because raw gas adopts washing, the gas washing sewage quantity producing in production process is 42 tons per hour.The pollution load of these sewage is very high, containing a large amount of ammonia, carbon monoxide, carbonic acid gas, hydrogen sulfide, phenol, tar and coal dusts etc., and after the pre-treatment such as flash distillation, sedimentation, total phenol concentration 6000mg/L, COD value 20000mg/L, pH value 9 ~ 10.5 left and right.
Method or the burning methods that adopt chemical industry treatment scheme to combine with biochemical treatment are processed this part sewage more at present, the technological principle of chemical industry treatment scheme: by the sewage containing the pollutent such as phenol, ammonia and sour gas after gravity settling by depickling deamination, extracting and dephenolizing, solvent stripping and four parts of solvent recuperation by most of ammonia, phenol and acid gas removal in sewage, the sewage after processing enters biochemistry and does further processing; But the H in chemical industry treating processes in sewage
2s, CO
2deng sour gas cognition, treating processes is caused to interference, and cause equipment corrosion, fouling, and ammonia also has restraining effect to microorganism, affect follow-up biochemical treatment, and existing lurgi gasifier gasification wastewater treatment technology, the main mode by heating evaporation and combustion heating recklessly mode are disposed of sewage, 4 tons of water approximately consume 1 ton of middle pressure steam, only ton cost of steam reaches more than 20 yuan, make phenol that lurgi gasifier produces, ammonolysis product cannot with cost balance, environmental protection has high input, and energy consumption is high, and lurgi gasifier sewage is wasted again a large amount of sensible heats simultaneously.
Summary of the invention
The present invention will solve existing lurgi gasifier sewage treatment process to have the problem that equipment easily blocks up, energy consumption is high and running cost is large, and a kind of lurgi gasifier gasification wastewater self-heating heat pump energy-conserving device is provided and utilizes it to carry out the pretreated method of sewage.
A kind of lurgi gasifier gasification wastewater of the present invention self-heating heat pump energy-conserving device comprises vacuum extraction sedimentation combination tower, vacuum extractor, heat exchange knockout tower, recycle pump, aqua ammonia pump and sewage (waste water) recirculating pump, vacuum extraction sedimentation combination tower top is that vacuum extraction part and bottom are sedimentation part, and vacuum extraction partly comprises arc top, cylindrical side wall, top gaseous phase outlet, traverse baffle, Lu Qire sewage inlet, cold sewage inlet and several macroporous plates, top gaseous phase outlet is arranged on center, arc top, the unsettled top gaseous phase outlet below that is arranged at of traverse baffle, traverse baffle is fixedly connected with arc top by fixed support, in cylindrical side wall, be symmetrical set the cold sewage inlet of Lu Qire sewage inlet and Lu Qi, and the cold sewage inlet of Lu Qire sewage inlet and Lu Qi is arranged between traverse baffle and first macroporous plate, several macroporous plates are all laid in cylindrical side wall inner side, and the drainage plate of first macroporous plate is arranged on Lu Qire sewage inlet one side, the drainage plate of last piece macroporous plate is arranged on strange cold sewage inlet one side in Shandong, subsidence part is divided and is comprised arc top at the bottom of still, cylindrical side wall at the bottom of still, conical lower portion at the bottom of still, sump oil outlet, phenol water out, greasy filth outlet, oil separating plate and agitator, at the bottom of the still of the cylindrical side wall of Lu Qire sewage inlet one side of vacuum extraction part and sedimentation part, arc top welds together, the cylindrical side wall of strange cold sewage inlet one side in Shandong of vacuum extraction part overlaps with cylindrical side wall at the bottom of the still of sedimentation part, sump oil outlet is set in cylindrical side wall at the bottom of the coincidence still of sedimentation part, at the bottom of still, the opposite side of cylindrical side wall arranges phenol water out, and phenol water exit port position is lower than sump oil outlet position, agitator comprises agitating vane and axle, the axle of agitator is arranged on the still base cone shape bottom centre of sedimentation part, axle top is connected with arc top drum wall at the bottom of sedimentation part still, bottom is connected with agitating vane, agitating vane parallels with sedimentation part still base cone shape bottom angle, oil separating plate is unsettled to be fixedly connected at the bottom of agitator and coincidence still between cylindrical side wall, and the top of oil separating plate is higher than sump oil outlet position, greasy filth outlet is arranged on the still base cone shape bottom centre of sedimentation part, heat exchange knockout tower comprises heat exchange knockout tower arc top, heat exchange knockout tower cylindrical side wall, heat exchange knockout tower curved bottom, gas-liquid entrance, pneumatic outlet, cold sewage inlet, heat exchange sewage outlet, condensation sewage outlet, heat exchange condensers and heat exchange knockout tower traverse baffle, gas-liquid entrance is arranged on center, heat exchange knockout tower arc top, pneumatic outlet is arranged in heat exchange knockout tower cylindrical side wall and is positioned at the top of heat exchange condensers, the unsettled gas outlet that is arranged at of heat exchange knockout tower traverse baffle, heat exchange knockout tower traverse baffle is fixed together by fixed support and heat exchange knockout tower cylindrical side wall, heat exchange condensers is by comprising that top is the tube sheet with some holes, middle part is the some tube banks corresponding with hole, bottom is the end socket with hole corresponding with some tube banks, heat exchange condensers is unsettled to be welded in heat exchange knockout tower curved bottom, and the tube sheet of heat exchange condensers is identical with the tower diameter of heat exchange knockout tower with the diameter of end socket, cold sewage inlet is arranged on heat exchange condensers shell side top, heat exchange sewage outlet is arranged on heat exchange condensers shell side bottom, and be diagonal lines setting with cold sewage inlet, condensation sewage outlet is arranged on heat exchange knockout tower curved bottom center, the top gaseous phase outlet of vacuum extraction sedimentation combination tower is communicated with the gas-liquid entrance of heat exchange knockout tower by vacuum extractor, the condensation sewage outlet of heat exchange knockout tower is divided into two-way, the recycle pump of leading up to is communicated with the cold sewage inlet of vacuum extraction sedimentation combination tower, the aqua ammonia pump of separately leading up to is communicated with follow-up system, the cold sewage inlet of heat exchange knockout tower is communicated with the phenol water out of vacuum extraction sedimentation combination tower by sewage (waste water) recirculating pump, and the heat exchange sewage outlet of heat exchange knockout tower is communicated with the cold sewage inlet of vacuum extraction sedimentation combination tower.
The principle of work of a kind of lurgi gasifier gasification wastewater of the present invention self-heating heat pump energy-conserving device: the present invention utilizes heat pump principle, by vacuum extraction sedimentation combination tower, vacuum extractor, heat exchange knockout tower, recycle pump, aqua ammonia pump and sewage (waste water) recirculating pump form heat pump cycle, according to principal pollutant carbonic acid gas in saturation water and saturated vapor thermodynamic property and sewage, ammonia, hydrogen sulfide, phenol, ortho-cresol and the p-cresol saturated vapor pressure (as depicted in figs. 1 and 2) under differing temps, utilize vacuum extractor that the sensible heat entering in the sewage of vacuum extraction sedimentation combination tower is turned to gasification latent heat by decompression transfer, after entering heat exchange knockout tower, recover pressure, emit latent heat and transfer sensible heat to, again heat being heated to low-temperature sewage by heat exchange sends back to, circulate, heat is fully used, first hot sewage enters in the vacuum extraction sedimentation combination tower of lurgi gasifier gasification wastewater energy saver by the Lu Qire sewage inlet of vacuum extraction sedimentation combination tower, by regulating the vacuum extractor of lurgi gasifier gasification wastewater energy saver to reduce pressure, make the hot sewage gas-liquid separation in vacuum extraction sedimentation combination tower, in vacuum extraction sedimentation combination tower, isolated gas is extracted out by the vacuum extractor of lurgi gasifier gasification wastewater energy saver through the top gaseous phase outlet of vacuum extraction sedimentation combination tower, through the gas-liquid entrance of heat exchange knockout tower, enter the heat exchange knockout tower of lurgi gasifier gasification wastewater energy saver, in vacuum extraction sedimentation combination tower, isolated liquid is divided into three layers after sedimentation, the light oil on upper strata enters tar tank by the sump oil outlet of vacuum extraction sedimentation combination tower, the solids of bottom enters sludge treatment system through the greasy filth outlet of vacuum extraction sedimentation combination tower, the phenol water part in middle level is delivered to phenol water storage tank, another part is extracted out by sewage (waste water) recirculating pump through the phenol water out of vacuum extraction sedimentation combination tower, the shell side of heat exchange condensers that enters the heat exchange knockout tower of lurgi gasifier gasification wastewater energy saver through the cold sewage inlet of heat exchange knockout tower carries out heat exchange as cold sewage and the gas that enters heat exchange knockout tower, gas partial liquefaction after heat exchange in heat exchange knockout tower, after heat exchange, in heat exchange knockout tower, the gas of liquefaction does not remove subsequent disposal system deamination through the pneumatic outlet of heat exchange knockout tower, sewage in heat exchange knockout tower after liquefaction enters the bottom of heat exchange knockout tower by the tube bank of the heat exchange condensers of heat exchange knockout tower, after condensation sewage outlet, be divided into two-way, one tunnel be recycled pump extract out through the strange cold sewage inlet in the Shandong of vacuum extraction sedimentation combination tower, enter lurgi gasifier gasification wastewater energy saver vacuum extraction sedimentation combination tower as cold effluent cycle, another road enters aqua ammonia pump, after being extracted out by aqua ammonia pump, delivering to follow-up system further processes, and through the heat exchange sewage outlet of heat exchange knockout tower, entering the strange cold sewage inlet in Shandong of vacuum extraction sedimentation combination tower with the cold sewage that the gas that enters heat exchange knockout tower carries out after heat exchange, the vacuum extraction sedimentation tower that then the strange cold sewage inlet in Shandong by vacuum extraction sedimentation combination tower enters lurgi gasifier gasification wastewater energy saver circulates as cold sewage.
Utilize above-mentioned lurgi gasifier gasification wastewater self-heating heat pump energy-conserving device to carry out the pretreated method of sewage, specifically complete according to the following steps:
By temperature, it is 160 ℃ ~ 190 ℃, pressure is that the hot sewage of the 2.5Mpa ~ 3MPa Lu Qire sewage inlet by vacuum extraction sedimentation combination tower enters in the vacuum extraction sedimentation combination tower of lurgi gasifier gasification wastewater energy saver, by regulating the vacuum extractor of lurgi gasifier gasification wastewater energy saver 20Kpa ~ 50Kpa(absolute pressure that reduces pressure), corresponding temperature is at 60 ℃ ~ 80 ℃, make the hot sewage gas-liquid separation in vacuum extraction sedimentation combination tower, sewage stops 1min ~ 10min in vacuum extraction part, sewage is residence time 10min ~ 30min in sedimentation part, isolated ammonia in vacuum extraction sedimentation combination tower, hydrogen sulfide, carbonic acid gas and water vapor are extracted out by the vacuum extractor of lurgi gasifier gasification wastewater energy saver through the top gaseous phase outlet of vacuum extraction sedimentation combination tower, through the gas-liquid entrance of heat exchange knockout tower, enter the heat exchange knockout tower of lurgi gasifier gasification wastewater energy saver, in vacuum extraction sedimentation combination tower, isolated liquid is divided into three layers after sedimentation, the light oil on upper strata enters tar tank by the sump oil outlet of vacuum extraction sedimentation combination tower, the solids of bottom enters sludge treatment system through the greasy filth outlet of vacuum extraction sedimentation combination tower, the phenol water part in middle level is delivered to phenol water storage tank, another part is extracted out by sewage (waste water) recirculating pump through the phenol water out of vacuum extraction sedimentation combination tower, the shell side of heat exchange condensers that enters the heat exchange knockout tower of lurgi gasifier gasification wastewater energy saver through the cold sewage inlet of heat exchange knockout tower carries out heat exchange as cold sewage and the gas that enters heat exchange knockout tower, ammonia after heat exchange in heat exchange knockout tower, hydrogen sulfide, carbonic acid gas and water vapor partial liquefaction, the ammonia not liquefying in heat exchange knockout tower after heat exchange, hydrogen sulfide, carbonic acid gas and water vapor remove subsequent disposal system deamination through the pneumatic outlet of heat exchange knockout tower, sewage in heat exchange knockout tower after liquefaction enters the bottom of heat exchange knockout tower through the tube bank of heat exchange separation column condenser, after condensation sewage outlet, be divided into two-way, one tunnel be recycled pump extract out through the strange cold sewage inlet in the Shandong of vacuum extraction sedimentation tower, enter lurgi gasifier gasification wastewater energy saver vacuum extraction sedimentation combination tower as cold effluent cycle, another road enters aqua ammonia pump, after being extracted out by aqua ammonia pump, delivering to follow-up system further processes, and with the ammonia that enters heat exchange knockout tower, hydrogen sulfide, the cold sewage that carbonic acid gas and water vapor carry out after heat exchange enters the strange cold sewage inlet in Shandong of vacuum extraction sedimentation combination tower through the heat exchange sewage outlet of heat exchange knockout tower, then the vacuum extraction sedimentation tower that the cold sewage inlet by vacuum extraction sedimentation combination tower enters lurgi gasifier gasification wastewater energy saver circulates as cold sewage.
Advantage of the present invention: one, in the sewage after the present invention processes, the content of ammonia and sour gas significantly reduces, basically eliminate the crystallization of follow-up system depickling deamination stripping tower and the problem of fouling, two, the present invention has reduced the pretreated energy consumption of sewage and processing cost, the present invention is different from the method for prior art to whole sewage stripping depickling deaminations, sewage after the present invention processes enters depickling deamination stripping tower again while carrying out depickling deamination, and quantity of steam used accounts for 10% of the whole stripping depickling of prior art deamination, approximately save 90% depickling deamination steam consumption, account for 45% of total energy consumption, reduce dephenolize water 20% simultaneously, save dephenolize steam and account for 10% of total energy consumption, energy-conservation is altogether 55% left and right of total energy consumption, energy-saving effect is obvious, with Zhong Meilonghua chemical company 200 tph sewage loads, consumption vapour 50 tphs, adopt the present invention, can 27.5 tons of middle pressure steams of saving per hour, 240,000 tons of annual steam savings, 10,000,000 yuan of economic benefits 2000, three, the present invention recycles the ammonia in sewage to greatest extent, and sewage ammonia quantity is dropped to 300mg/L meets below biochemical requirement.
Accompanying drawing explanation
Fig. 1 is the saturated vapor pressure graphic representation of water, carbonic acid gas, ammonia and hydrogen sulfide, in Fig. 1 ◆ represent water saturation vapour-pressure chart, ■ in Fig. 1 represents the saturated vapor pressure graphic representation of carbonic acid gas, in Fig. 1 ▲ represent the saturated vapor pressure graphic representation of ammonia, in Fig. 1 * the saturated vapor pressure graphic representation of hydrogen sulfide represented; Fig. 2 is the saturated vapor pressure graphic representation of water, phenol, ortho-cresol and p-cresol, in Fig. 2 ◆ represent water saturation vapour-pressure chart, ■ in Fig. 2 represents the saturated vapor pressure graphic representation of phenol, in Fig. 2 ▲ represent the saturated vapor pressure graphic representation of ortho-cresol, in Fig. 2 * the saturated vapor pressure graphic representation of p-cresol represented; Fig. 3 is a kind of lurgi gasifier gasification wastewater energy saver schema of embodiment one; Fig. 4 is the sectional view of the A-A' of Fig. 3; Fig. 5 is the sectional view of the B-B' of Fig. 3; The sectional view of the C-C ' of Fig. 6 Fig. 3; Fig. 7 is the sectional view of the D-D' of Fig. 3.
Embodiment
Embodiment one: comprise vacuum extraction sedimentation combination tower 1, vacuum extractor 2, heat exchange knockout tower 3, recycle pump 4, aqua ammonia pump 5 and sewage (waste water) recirculating pump 6 in conjunction with a kind of lurgi gasifier gasification wastewater of Fig. 3 present embodiment self-heating heat pump energy-conserving device, vacuum extraction sedimentation combination tower 1 top is that vacuum extraction part and bottom are sedimentation part, and vacuum extraction partly comprises arc top 1-1, cylindrical side wall 1-2, top gaseous phase outlet 1-3, traverse baffle 1-4, Lu Qire sewage inlet 1-5, the strange cold sewage inlet 1-6 in Shandong and several macroporous plates 1-7, top gaseous phase outlet 1-3 is arranged on 1-1 center, arc top, the unsettled top gaseous phase outlet 1-3 below that is arranged at of traverse baffle 1-4, traverse baffle 1-4 is fixedly connected with arc top 1-1 by fixed support 1-16, on cylindrical side wall 1-2, be symmetrical set the cold sewage inlet 1-6 of Lu Qire sewage inlet 1-5 and Lu Qi, and the cold sewage inlet 1-6 of Lu Qire sewage inlet 1-5 and Lu Qi is arranged between traverse baffle 1-4 and first macroporous plate 1-7, several macroporous plates 1-7 is all laid in cylindrical side wall 1-2 inner side, and the drainage plate of first macroporous plate 1-7 is arranged on Lu Qire sewage inlet 1-5 mono-side, the drainage plate of last piece macroporous plate 1-7 is strange cold sewage inlet 1-6 mono-side in Shandong, subsidence part is divided and is comprised arc top 1-8 at the bottom of still, cylindrical side wall 1-9 at the bottom of still, conical lower portion 1-10 at the bottom of still, sump oil outlet 1-11, phenol water out 1-12, greasy filth outlet 1-13, oil separating plate 1-14 and agitator 1-15, at the bottom of the still of the cylindrical side wall 1-2 of Lu Qire sewage inlet 1-5 mono-side of vacuum extraction part and sedimentation part, arc top 1-8 welds together, the cylindrical side wall 1-2 of strange cold sewage inlet 1-6 mono-side in Shandong of vacuum extraction part overlaps with cylindrical side wall 1-9 at the bottom of the still of sedimentation part, sump oil outlet 1-11 is set on cylindrical side wall 1-9 at the bottom of the coincidence still of sedimentation part, at the bottom of still, the opposite side of cylindrical side wall 1-9 arranges phenol water out 1-12, and phenol water out 1-12 position is lower than sump oil outlet 1-11 position, agitator 1-15 comprises agitating vane 1-15-1 and axle 1-15-2, the axle 1-15-2 of agitator 1-15 is arranged on conical lower portion 1-10 center at the bottom of the still of sedimentation part, axle 1-15-2 top is connected with arc top 1-8 tower wall at the bottom of sedimentation part still, bottom is connected with agitating vane 1-15-1, agitating vane 1-15-1 parallels with conical lower portion 1-10 angle at the bottom of sedimentation part still, oil separating plate 1-14 is unsettled to be fixedly connected at the bottom of agitator 1-15 and coincidence still between cylindrical side wall 1-9, and the top of oil separating plate 1-14 is higher than sump oil outlet 1-11 position, greasy filth outlet 1-13 is arranged on conical lower portion 1-10 center at the bottom of the still of sedimentation part, heat exchange knockout tower 3 comprises heat exchange knockout tower arc top 3-1, heat exchange knockout tower cylindrical side wall 3-2, heat exchange knockout tower curved bottom 3-3, gas-liquid entrance 3-4, pneumatic outlet 3-5, cold sewage inlet 3-6, heat exchange sewage outlet 3-7, condensation sewage outlet 3-8, heat exchange condensers 3-9 and heat exchange knockout tower traverse baffle 3-10, gas-liquid entrance 3-4 is arranged on 3-1 center, heat exchange knockout tower arc top, pneumatic outlet 3-5 is arranged on heat exchange knockout tower cylindrical side wall 3-2 above and is positioned at the top of heat exchange condensers 3-9, the unsettled pneumatic outlet 3-5 place that is arranged at of heat exchange knockout tower traverse baffle 3-10, heat exchange knockout tower traverse baffle 3-10 is fixedly connected with heat exchange knockout tower cylindrical side wall 3-2 by fixed support, heat exchange condensers 3-9 is by comprising that top is the tube sheet with some holes, middle part is the some tube banks corresponding with hole, bottom is the end socket with hole corresponding with some tube banks, heat exchange condensers 3-9 is unsettled to be welded on heat exchange knockout tower curved bottom 3-3, and the diameter of heat exchange condensers 3-9 tube sheet and end socket is identical with the tower diameter of heat exchange knockout tower 3, cold sewage inlet 3-6 is arranged on heat exchange condensers 3-9 shell side top, heat exchange sewage outlet 3-7 is arranged on heat exchange condensers 3-9 shell side bottom, and be diagonal lines setting with cold sewage inlet 3-6, condensation sewage outlet 3-8 is arranged on heat exchange knockout tower curved bottom 3-3 center, the top gaseous phase outlet 1-3 of vacuum extraction sedimentation combination tower 1 is communicated with the gas-liquid entrance 3-4 of heat exchange knockout tower 3 by vacuum extractor 2, the condensation sewage outlet 3-8 of heat exchange knockout tower 3 is divided into two-way, the recycle pump 4 of leading up to is communicated with the cold sewage inlet 1-6 of vacuum extraction sedimentation combination tower 1, the aqua ammonia pump 5 of separately leading up to is communicated with follow-up system, 3 cold sewage inlet 3-6 of heat exchange knockout tower are communicated with the phenol water out 1-12 of vacuum extraction sedimentation combination tower 1 by sewage (waste water) recirculating pump 6, the heat exchange sewage outlet 3-7 of heat exchange knockout tower 3 is communicated with the cold sewage inlet 1-6 of vacuum extraction sedimentation combination tower 1.
The principle of work of a kind of lurgi gasifier gasification wastewater self-heating heat pump energy-conserving device described in present embodiment: present embodiment is utilized heat pump principle, by vacuum extraction sedimentation combination tower 1, vacuum extractor 2, heat exchange knockout tower 3, recycle pump 4, aqua ammonia pump 5 and sewage (waste water) recirculating pump 6 form heat pump cycle, according to principal pollutant carbonic acid gas in saturation water and saturated vapor thermodynamic property and sewage, ammonia, hydrogen sulfide, phenol, ortho-cresol and the p-cresol saturated vapor pressure (as depicted in figs. 1 and 2) under differing temps, utilize vacuum extractor 2 that the sensible heat entering in the sewage of vacuum extraction sedimentation combination tower 1 is turned to gasification latent heat by decompression transfer, enter the rear recovery pressure of heat exchange knockout tower 3, emit latent heat and transfer sensible heat to, again heat being heated to low-temperature sewage by heat exchange sends back to, circulate, heat is fully used, first hot sewage enters in the vacuum extraction sedimentation combination tower 1 of lurgi gasifier gasification wastewater energy saver by the Lu Qire sewage inlet 1-5 of vacuum extraction sedimentation combination tower 1, by regulating vacuum extractor 2 decompressions of lurgi gasifier gasification wastewater energy saver, make the hot sewage gas-liquid separation in vacuum extraction sedimentation combination tower 1, in vacuum extraction sedimentation combination tower 1, isolated gas is extracted out by the vacuum extractor 2 of lurgi gasifier gasification wastewater energy saver through the top gaseous phase outlet 1-3 of vacuum extraction sedimentation combination tower 1, through the gas-liquid entrance 3-4 of heat exchange knockout tower 3, enter the heat exchange knockout tower 3 of lurgi gasifier gasification wastewater energy saver, in vacuum extraction sedimentation combination tower 1, isolated liquid is divided into three layers after sedimentation, the light oil on upper strata enters tar tank by the sump oil outlet 1-11 of vacuum extraction sedimentation combination tower 1, the solids of bottom enters sludge treatment system through the greasy filth outlet 1-13 of vacuum extraction sedimentation combination tower 1, the phenol water part in middle level is delivered to phenol water storage tank, another part is extracted out by sewage (waste water) recirculating pump 6 through the phenol water out 1-12 of vacuum extraction sedimentation combination tower 1, the shell side of heat exchange condensers 3-9 that enters the heat exchange knockout tower 3 of lurgi gasifier gasification wastewater energy saver through the cold sewage inlet 3-6 of heat exchange knockout tower 3 carries out heat exchange as cold sewage and the gas that enters heat exchange knockout tower 3, gas partial liquefaction after heat exchange in heat exchange knockout tower 3, after heat exchange, in heat exchange knockout tower 3, the gas of liquefaction does not remove subsequent disposal system deamination through the pneumatic outlet 3-5 of heat exchange knockout tower, sewage in heat exchange knockout tower 3 after liquefaction enters the bottom of heat exchange knockout tower 3 by the tube bank of heat exchange knockout tower 3 condenser 3-9, after condensation sewage outlet 3-8, be divided into two-way, one tunnel be recycled pump 4 extract out through the strange cold sewage inlet 1-6 in the Shandong of vacuum extraction sedimentation tower 1, enter lurgi gasifier gasification wastewater energy saver vacuum extraction sedimentation combination tower 1 as cold effluent cycle, another road enters aqua ammonia pump 5, after being extracted out by aqua ammonia pump 5, delivering to follow-up system further processes, and through the heat exchange sewage outlet 3-7 of heat exchange knockout tower 3, entering the cold sewage inlet 1-6 of vacuum extraction sedimentation combination tower 1 with the cold sewage that the gas that enters heat exchange knockout tower 3 carries out after heat exchange, the vacuum extraction sedimentation tower 1 that then the strange cold sewage inlet 1-6 in Shandong by vacuum extraction sedimentation combination tower 1 enters lurgi gasifier gasification wastewater energy saver circulates as cold sewage.
In sewage after utilizing the device of present embodiment to process, the content of ammonia and sour gas significantly reduces, basically eliminate the crystallization of follow-up system depickling deamination stripping tower and the problem of fouling.
Utilize the device of present embodiment to dispose of sewage and reduced the pretreated energy consumption of sewage and processing cost.
Utilize the device of present embodiment to dispose of sewage and recycle to greatest extent the ammonia in sewage, and sewage ammonia quantity is dropped to 300mg/L meet below biochemical requirement.
Embodiment two: present embodiment is different from embodiment one: described vacuum extractor 2 is vacuum pump or steam vapour extractor.Other are identical with embodiment one.
Embodiment three: present embodiment is different from embodiment one or two: the traverse baffle 1-4 of described vacuum extraction sedimentation combination tower 1 is 0.5m ~ 1m apart from the distance of top gaseous phase outlet 1-3.Other are identical with embodiment one or two.
Embodiment four: present embodiment is different from one of embodiment one to three: the macroporous plate 1-7 of described vacuum extraction sedimentation combination tower 1 processes the metal sheet that some diameters are the hole of 3cm ~ 8cm in planar metal plate.Other are identical with embodiment one to three.
Embodiment five: present embodiment is different from one of embodiment one to four: the agitating vane 1-15-1 of the agitator 1-15 of described vacuum extraction sedimentation combination tower 1 is the rectangular metal sheet of high 20cm, long 40cm, thick 2cm.Other are identical with embodiment one to four.
Embodiment six: present embodiment utilizes the lurgi gasifier gasification wastewater self-heating heat pump energy-conserving device of embodiment one to carry out the pretreated method of sewage, specifically completes according to the following steps:
By temperature, it is 160 ℃ ~ 190 ℃, pressure is that the hot sewage of the 2.5Mpa ~ 3MPa Lu Qire sewage inlet 1-5 by vacuum extraction sedimentation combination tower 1 enters in the vacuum extraction sedimentation combination tower 1 of lurgi gasifier gasification wastewater energy saver, by regulating vacuum extractor 2 decompressions of lurgi gasifier gasification wastewater energy saver to 20Kpa ~ 50Kpa(absolute pressure), corresponding temperature is at 60 ℃ ~ 80 ℃, make the hot sewage gas-liquid separation in vacuum extraction sedimentation combination tower 1, sewage stops 1min ~ 10min in vacuum extraction part, sewage is residence time 10min ~ 30min in sedimentation part, isolated ammonia in vacuum extraction sedimentation combination tower 1, hydrogen sulfide, carbonic acid gas and water vapor are extracted out by the vacuum extractor 2 of lurgi gasifier gasification wastewater energy saver through the top gaseous phase outlet 1-3 of vacuum extraction sedimentation combination tower 1, through the gas-liquid entrance 3-4 of heat exchange knockout tower 3, enter the heat exchange knockout tower 3 of lurgi gasifier gasification wastewater energy saver, in vacuum extraction sedimentation combination tower 1, isolated liquid is divided into three layers after sedimentation, the light oil on upper strata enters tar tank by the sump oil outlet 1-11 of vacuum extraction sedimentation combination tower 1, the solids of bottom enters sludge treatment system through the greasy filth outlet 1-13 of vacuum extraction sedimentation combination tower 1, the phenol water part in middle level is delivered to phenol water storage tank, another part is extracted out by sewage (waste water) recirculating pump 6 through the phenol water out 1-12 of vacuum extraction sedimentation combination tower 1, the shell side of heat exchange condensers 3-9 that enters the heat exchange knockout tower 3 of lurgi gasifier gasification wastewater energy saver through the cold sewage inlet 3-6 of heat exchange knockout tower 3 carries out heat exchange as cold sewage and the gas that enters heat exchange knockout tower 3, ammonia after heat exchange in heat exchange knockout tower 3, hydrogen sulfide, carbonic acid gas and water vapor partial liquefaction, the ammonia not liquefying in heat exchange knockout tower 3 after heat exchange, hydrogen sulfide, carbonic acid gas and water vapor remove subsequent disposal system deamination through the pneumatic outlet 3-5 of heat exchange knockout tower 3, sewage in heat exchange knockout tower 3 after liquefaction enters the bottom of heat exchange knockout tower 3 through the tube bank of heat exchange knockout tower 3 condenser 3-9, after condensation sewage outlet 3-8, be divided into two-way, one tunnel be recycled pump 4 extract out through the strange cold sewage inlet 1-6 in the Shandong of vacuum extraction sedimentation tower 1, enter lurgi gasifier gasification wastewater energy saver vacuum extraction sedimentation combination tower 1 as cold effluent cycle, another road enters aqua ammonia pump 5, after being extracted out by aqua ammonia pump 5, delivering to follow-up system further processes, and with the ammonia that enters heat exchange knockout tower 3, hydrogen sulfide, the cold sewage that carbonic acid gas and water vapor carry out after heat exchange enters the strange cold sewage inlet 1-6 in Shandong of vacuum extraction sedimentation combination tower 1 through the heat exchange sewage outlet 3-7 of heat exchange knockout tower 3, then the vacuum extraction sedimentation tower 1 that the strange cold sewage inlet 1-6 in Shandong by vacuum extraction sedimentation combination tower 1 enters lurgi gasifier gasification wastewater energy saver circulates as cold sewage.
In sewage after the method for present embodiment is processed, the content of ammonia and sour gas significantly reduces, basically eliminate the crystallization of follow-up system depickling deamination stripping tower and the problem of fouling.
The method of present embodiment has reduced the pretreated energy consumption of sewage and processing cost, present embodiment is different from the method for prior art to whole sewage stripping depickling deaminations, sewage after present embodiment is processed enters depickling deamination stripping tower again while carrying out depickling deamination, and quantity of steam used accounts for 10% of the whole stripping depickling of prior art deamination, approximately save 90% depickling deamination steam consumption, account for 45% of total energy consumption, reduce dephenolize water 20% simultaneously, save dephenolize steam and account for 10% of total energy consumption, energy-conservation is altogether 55% left and right of total energy consumption, energy-saving effect is obvious, with Zhong Meilonghua chemical company 200 tph sewage loads, consumption vapour 50 tphs, adopt the present invention, can 27.5 tons of middle pressure steams of saving per hour, 240,000 tons of annual steam savings, 10,000,000 yuan of economic benefits 2000.
The method of present embodiment is recycled the ammonia in sewage to greatest extent, and sewage ammonia quantity is dropped to 300mg/L meets below biochemical requirement.
Embodiment seven: present embodiment is different from embodiment six: described vacuum extractor 2 is vacuum pump or steam vapour extractor.Other are identical with embodiment six.
Adopt following verification experimental verification effect of the present invention:
Test one: utilize lurgi gasifier gasification wastewater self-heating heat pump energy-conserving device of the present invention to carry out the pretreated method of sewage, specifically complete according to the following steps:
By temperature, it is 180 ℃, pressure is that the hot sewage of the 3MPa Lu Qire sewage inlet 1-5 by vacuum extraction sedimentation combination tower 1 enters in the vacuum extraction sedimentation combination tower 1 of lurgi gasifier gasification wastewater energy saver, by regulating vacuum extractor 2 decompressions of lurgi gasifier gasification wastewater energy saver to 20Kpa(absolute pressure), corresponding temperature is at 60 ℃, make the hot sewage gas-liquid separation in vacuum extraction sedimentation combination tower 1, sewage stops 3min in vacuum extraction part, sewage is residence time 27min in sedimentation part, isolated ammonia in vacuum extraction sedimentation combination tower 1, hydrogen sulfide, carbonic acid gas and water vapor are extracted out by the vacuum extractor 2 of lurgi gasifier gasification wastewater energy saver through the top gaseous phase outlet 1-3 of vacuum extraction sedimentation combination tower 1, through the gas-liquid entrance 3-4 of heat exchange knockout tower 3, enter the heat exchange knockout tower 3 of lurgi gasifier gasification wastewater energy saver, in vacuum extraction sedimentation combination tower 1, isolated liquid is divided into three layers after sedimentation, the light oil on upper strata enters tar tank by the sump oil outlet 1-11 of vacuum extraction sedimentation combination tower 1, the solids of bottom enters sludge treatment system through the greasy filth outlet 1-13 of vacuum extraction sedimentation combination tower 1, the phenol water part in middle level is delivered to phenol water storage tank, another part is extracted out by sewage (waste water) recirculating pump 6 through the phenol water out 1-12 of vacuum extraction sedimentation combination tower 1, the shell side of heat exchange condensers 3-9 that enters the heat exchange knockout tower 3 of lurgi gasifier gasification wastewater energy saver through the cold sewage inlet 3-6 of heat exchange knockout tower 3 carries out heat exchange as cold sewage and the gas that enters heat exchange knockout tower 3, ammonia after heat exchange in heat exchange knockout tower 3, hydrogen sulfide, carbonic acid gas and water vapor partial liquefaction, the ammonia not liquefying in heat exchange knockout tower 3 after heat exchange, hydrogen sulfide, carbonic acid gas and water vapor remove subsequent disposal system deamination through the pneumatic outlet 3-5 of heat exchange knockout tower 3, sewage in heat exchange knockout tower 3 after liquefaction enters the bottom of heat exchange knockout tower 3 through the tube bank of heat exchange knockout tower 3 condenser 3-9, after condensation sewage outlet 3-8, be divided into two-way, one tunnel be recycled pump 4 extract out through the strange cold sewage inlet 1-6 in the Shandong of vacuum extraction sedimentation tower 1, enter lurgi gasifier gasification wastewater energy saver vacuum extraction sedimentation combination tower 1 as cold effluent cycle, another road enters aqua ammonia pump 5, after being extracted out by aqua ammonia pump 5, delivering to follow-up system further processes, and with the ammonia that enters heat exchange knockout tower 3, hydrogen sulfide, the cold sewage that carbonic acid gas and water vapor carry out after heat exchange enters the strange cold sewage inlet 1-6 in Shandong of vacuum extraction sedimentation combination tower 1 through the heat exchange sewage outlet 3-7 of heat exchange knockout tower 3, then the vacuum extraction sedimentation tower 1 that the strange cold sewage inlet 1-6 in Shandong by vacuum extraction sedimentation combination tower 1 enters lurgi gasifier gasification wastewater energy saver circulates as cold sewage.
In this test, temperature is 180 ℃, pressure is that in the hot sewage of 3MPa, total ammonia content is 19394mg/L, after lurgi gasifier gasification wastewater self-heating heat pump energy-conserving device of the present invention is processed, water outlet to the phenol water out 1-12 of vacuum extraction sedimentation combination tower 1 detects, and in water outlet, total ammonia content is 293mg/L.
Claims (7)
1. a lurgi gasifier gasification wastewater self-heating heat pump energy-conserving device, is characterized in that lurgi gasifier gasification wastewater self-heating heat pump energy-conserving device comprises vacuum extraction sedimentation combination tower (1), vacuum extractor (2), heat exchange knockout tower (3), recycle pump (4), aqua ammonia pump (5) and sewage (waste water) recirculating pump (6), vacuum extraction sedimentation combination tower (1) top is that vacuum extraction part and bottom are sedimentation part, and vacuum extraction partly comprises arc top (1-1), cylindrical side wall (1-2), top gaseous phase outlet (1-3), traverse baffle (1-4), Lu Qire sewage inlet (1-5), the strange cold sewage inlet in Shandong (1-6) and several macroporous plates (1-7), top gaseous phase outlet (1-3) is arranged on center, arc top (1-1), unsettled top gaseous phase outlet (1-3) below that is arranged at of traverse baffle (1-4), traverse baffle (1-4) is fixedly connected with arc top (1-1) by fixed support (1-16), in cylindrical side wall (1-2), be symmetrical set the strange cold sewage inlet in Lu Qire sewage inlet (1-5) and Shandong (1-6), and the strange cold sewage inlet in Lu Qire sewage inlet (1-5) and Shandong (1-6) is arranged between traverse baffle (1-4) and first macroporous plate (1-7), several macroporous plates (1-7) are all laid in cylindrical side wall (1-2) inner side, and the drainage plate of first macroporous plate (1-7) is arranged on Lu Qire sewage inlet (1-5) side, the drainage plate of last piece macroporous plate (1-7) is strange cold sewage inlet (1-6) side in Shandong, subsidence part is divided and is comprised arc top (1-8) at the bottom of still, cylindrical side wall at the bottom of still (1-9), conical lower portion at the bottom of still (1-10), sump oil outlet (1-11), phenol water out (1-12), greasy filth outlet (1-13), oil separating plate (1-14) and agitator (1-15), the cylindrical side wall (1-2) of Lu Qire sewage inlet (1-5) side of vacuum extraction part welds together with arc top (1-8) at the bottom of the still of sedimentation part, the cylindrical side wall (1-2) of the strange cold sewage inlet in Shandong (1-6) side of vacuum extraction part overlaps with cylindrical side wall (1-9) at the bottom of the still of sedimentation part, sump oil outlet (1-11) is set in cylindrical side wall (1-9) at the bottom of the coincidence still of sedimentation part, the opposite side of cylindrical side wall at the bottom of still (1-9) arranges phenol water out (1-12), and phenol water out (1-12) position is lower than sump oil outlet (1-11) position, agitator (1-15) comprises agitating vane (1-15-1) and axle (1-15-2), the axle (1-15-2) of agitator (1-15) is arranged on conical lower portion (1-10) center at the bottom of the still of sedimentation part, axle (1-15-2) top is connected with arc top (1-8) tower wall at the bottom of sedimentation part still, bottom is connected with agitating vane (1-15-1), agitating vane (1-15-1) parallels with conical lower portion (1-10) angle at the bottom of sedimentation part still, oil separating plate (1-14) is unsettled to be fixedly connected at the bottom of agitator (1-15) and coincidence still between cylindrical side wall (1-9), and the top of oil separating plate (1-14) is higher than sump oil outlet (1-11) position, greasy filth outlet (1-13) is arranged on conical lower portion (1-10) center at the bottom of the still of sedimentation part, heat exchange knockout tower (3) comprises heat exchange knockout tower arc top (3-1), heat exchange knockout tower cylindrical side wall (3-2), heat exchange knockout tower curved bottom (3-3), gas-liquid entrance (3-4), pneumatic outlet (3-5), cold sewage inlet (3-6), heat exchange sewage outlet (3-7), condensation sewage outlet (3-8), heat exchange condensers (3-9) and heat exchange knockout tower traverse baffle (3-10), gas-liquid entrance (3-4) is arranged on center, heat exchange knockout tower arc top (3-1), pneumatic outlet (3-5) is arranged on heat exchange knockout tower cylindrical side wall (3-2) above and is positioned at the top of heat exchange condensers (3-9), the unsettled pneumatic outlet (3-5) that is arranged at of heat exchange knockout tower traverse baffle (3-10) is located, heat exchange knockout tower traverse baffle (3-10) is fixedly connected with heat exchange knockout tower cylindrical side wall (3-2) by fixed support, heat exchange condensers (3-9) is by comprising that top is the tube sheet with some holes, middle part is the some tube banks corresponding with hole, bottom is the end socket with hole corresponding with some tube banks, heat exchange condensers (3-9) is unsettled to be welded in heat exchange knockout tower curved bottom (3-3), and the diameter of heat exchange condensers (3-9) tube sheet and end socket is identical with the tower diameter of heat exchange knockout tower (3), cold sewage inlet (3-6) is arranged on heat exchange condensers (3-9) shell side top, heat exchange sewage outlet (3-7) is arranged on heat exchange condensers (3-9) shell side bottom, and be diagonal lines setting with cold sewage inlet (3-6), condensation sewage outlet (3-8) is arranged on heat exchange knockout tower curved bottom (3-3) center, the top gaseous phase outlet (1-3) of vacuum extraction sedimentation combination tower (1) is communicated with the gas-liquid entrance (3-4) of heat exchange knockout tower (3) by vacuum extractor (2), the condensation sewage outlet (3-8) of heat exchange knockout tower (3) is divided into two-way, the recycle pump (4) of leading up to is communicated with the cold sewage inlet (1-6) of vacuum extraction sedimentation combination tower (1), the aqua ammonia pump (5) of separately leading up to is communicated with follow-up system, (3) cold sewage inlet (3-6) of heat exchange knockout tower is communicated with the phenol water out (1-12) of vacuum extraction sedimentation combination tower (1) by sewage (waste water) recirculating pump (6), the heat exchange sewage outlet (3-7) of heat exchange knockout tower (3) is communicated with the cold sewage inlet (1-6) of vacuum extraction sedimentation combination tower (1).
2. a kind of lurgi gasifier gasification wastewater self-heating heat pump energy-conserving device according to claim 1, is characterized in that described vacuum extractor (2) is vacuum pump or steam vapour extractor.
3. a kind of lurgi gasifier gasification wastewater self-heating heat pump energy-conserving device according to claim 1, the traverse baffle (1-4) that it is characterized in that described vacuum extraction sedimentation combination tower (1) is 0.5m ~ 1m apart from the distance of top gaseous phase outlet (1-3).
4. a kind of lurgi gasifier gasification wastewater self-heating heat pump energy-conserving device according to claim 1, is characterized in that the macroporous plate (1-7) of described vacuum extraction sedimentation combination tower (1) is for processing the metal sheet that some diameters are the hole of 3cm ~ 8cm in planar metal plate.
5. a kind of lurgi gasifier gasification wastewater self-heating heat pump energy-conserving device according to claim 1, the rectangular metal sheet that the agitating vane (1-15-1) that it is characterized in that the agitator (1-15) of described vacuum extraction sedimentation combination tower (1) is high 20cm, long 40cm, thick 2cm.
6. utilize a kind of lurgi gasifier gasification wastewater self-heating heat pump energy-conserving device as claimed in claim 1 to carry out the pretreated method of sewage, it is characterized in that the method carries out according to the following steps:
By temperature, it is 160 ℃ ~ 190 ℃, pressure is that the hot sewage of the 2.5Mpa ~ 3MPa Lu Qire sewage inlet (1-5) by vacuum extraction sedimentation combination tower (1) enters in the vacuum extraction sedimentation combination tower (1) of lurgi gasifier gasification wastewater energy saver, by regulating vacuum extractor (2) decompression of lurgi gasifier gasification wastewater energy saver to 20Kpa ~ 50Kpa, corresponding temperature is at 60 ℃ ~ 80 ℃, make the hot sewage gas-liquid separation in vacuum extraction sedimentation combination tower (1), sewage stops 1min ~ 10min in vacuum extraction part, sewage is residence time 10min ~ 30min in sedimentation part, isolated ammonia in vacuum extraction sedimentation combination tower (1), hydrogen sulfide, carbonic acid gas and water vapor are extracted out by the vacuum extractor of lurgi gasifier gasification wastewater energy saver (2) through the top gaseous phase outlet (1-3) of vacuum extraction sedimentation combination tower (1), through the gas-liquid entrance (3-4) of heat exchange knockout tower (3), enter the heat exchange knockout tower (3) of lurgi gasifier gasification wastewater energy saver, in vacuum extraction sedimentation combination tower (1), isolated liquid is divided into three layers after sedimentation, the light oil on upper strata enters tar tank by the sump oil outlet (1-11) of vacuum extraction sedimentation combination tower (1), the solids of bottom enters sludge treatment system through the greasy filth outlet (1-13) of vacuum extraction sedimentation combination tower (1), the phenol water part in middle level is delivered to phenol water storage tank, another part is extracted out by sewage (waste water) recirculating pump (6) through the phenol water out (1-12) of vacuum extraction sedimentation combination tower (1), the shell side of heat exchange condensers (3-9) that enters the heat exchange knockout tower (3) of lurgi gasifier gasification wastewater energy saver through the cold sewage inlet (3-6) of heat exchange knockout tower (3) carries out heat exchange as cold sewage and the gas that enters heat exchange knockout tower (3), ammonia after heat exchange in heat exchange knockout tower (3), hydrogen sulfide, carbonic acid gas and water vapor partial liquefaction, the ammonia not liquefying in heat exchange knockout tower (3) after heat exchange, hydrogen sulfide, carbonic acid gas and water vapor remove subsequent disposal system deamination through the pneumatic outlet (3-5) of heat exchange knockout tower (3), sewage in heat exchange knockout tower (3) after liquefaction enters the bottom of heat exchange knockout tower (3) through the tube bank of heat exchange knockout tower (3) condenser (3-9), after condensation sewage outlet (3-8), be divided into two-way, one tunnel is recycled pump (4) and extracts vacuum extraction sedimentation combination tower (1) that the strange cold sewage inlet in Shandong (1-6) through vacuum extraction sedimentation tower (1) enters lurgi gasifier gasification wastewater energy saver out as cold effluent cycle, another road enters aqua ammonia pump (5), after being extracted out by aqua ammonia pump (5), delivering to follow-up system further processes, and with the ammonia that enters heat exchange knockout tower (3), hydrogen sulfide, the cold sewage that carbonic acid gas and water vapor carry out after heat exchange enters the strange cold sewage inlet in Shandong (1-6) of vacuum extraction sedimentation combination tower (1) through the heat exchange sewage outlet (3-7) of heat exchange knockout tower (3), then the vacuum extraction sedimentation tower (1) that the strange cold sewage inlet in Shandong (1-6) by vacuum extraction sedimentation combination tower (1) enters lurgi gasifier gasification wastewater energy saver circulates as cold sewage.
7. a kind of lurgi gasifier gasification wastewater self-heating heat pump energy-conserving device according to claim 6 carries out the pretreated method of sewage, it is characterized in that described vacuum extractor (2) is vacuum pump or steam vapour extractor.
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| DE2920691A1 (en) * | 1979-05-22 | 1980-11-27 | Westfael Elekt Werke | Coal gasification contaminants treatment - by recycling all for thermal cracking except sulphur, fluorine and chlorine |
| CN101549929A (en) * | 2009-05-18 | 2009-10-07 | 焦国辉 | Method for distilling absorption type negative-pressure thermal cycle coking wastewater |
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| DE3310712C2 (en) * | 1983-03-24 | 1994-02-24 | Metallgesellschaft Ag, 6000 Frankfurt | Process for treating a water-containing condensate |
| CN1124232A (en) * | 1994-12-06 | 1996-06-12 | 王师祥 | Non-pollution treating tech. process for waste water in gas production |
| CN100513533C (en) * | 2005-12-31 | 2009-07-15 | 天脊煤化工集团有限公司 | Process for treating gas water for producing gas by lurgi furnace |
| RU2345952C2 (en) * | 2006-10-05 | 2009-02-10 | Исследовательский центр проблем энергетики КазНЦ РАН | Method for utilisation of reused water and device for its realisation |
| CN201240966Y (en) * | 2008-05-21 | 2009-05-20 | 山西丰喜肥业（集团）股份有限公司临猗分公司 | Ash water treating device applied to classified gasification furnace |
| CA2735061C (en) * | 2010-08-24 | 2017-07-18 | Kemex Ltd. | An improved water recovery system sagd system utilizing a flash drum |
| CN203021397U (en) * | 2013-01-28 | 2013-06-26 | 中煤能源黑龙江煤化工有限公司 | Lurgi gasifier gasification sewage self-heating heat pump energy-saving device |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2920691A1 (en) * | 1979-05-22 | 1980-11-27 | Westfael Elekt Werke | Coal gasification contaminants treatment - by recycling all for thermal cracking except sulphur, fluorine and chlorine |
| CN101549929A (en) * | 2009-05-18 | 2009-10-07 | 焦国辉 | Method for distilling absorption type negative-pressure thermal cycle coking wastewater |
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