CN203741036U - Transformation system for light oil-containing water gas - Google Patents
Transformation system for light oil-containing water gas Download PDFInfo
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- CN203741036U CN203741036U CN201420014216.9U CN201420014216U CN203741036U CN 203741036 U CN203741036 U CN 203741036U CN 201420014216 U CN201420014216 U CN 201420014216U CN 203741036 U CN203741036 U CN 203741036U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
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Abstract
The utility model discloses a transformation system for light oil-containing water gas. The system comprises a transformation furnace which contains a catalyst catalyzing the light oil-containing water gas to carry out oxidation-reduction reaction, a waste heat boiler which is connected with the transformation furnace to cool transformed gas discharged from the transformation furnace, a gas-liquid separating device connected with the waste heat boiler and an oil-water separating device which is connected with the gas-liquid separating device and used for separating oil and water for a liquid mixture separated from the gas-liquid separating device. By treating the light oil-containing water gas by means of the system, the consumption of superheated steam can be remarkably reduced, and the system is less in energy consumption and low in cost.
Description
Technical field
The utility model relates to water-gas shift technique, and particularly, the utility model relates to containing lightweight oil water-gas shift system.
Background technology
Important conversion process process in the production processes such as carbon monodixe conversion is that methane is synthetic, ammonia synthesis, oxo process and hydrogen manufacturing.In carbon monoxide transformation process, regulate hydrogen-carbon ratio by carbon monoxide is transformed to hydrogen, then produce the Chemicals such as synthesizing methane, ammonia, methyl alcohol, hydrogen by dissimilar reaction process.
But the processing means of existing water-gas need further improvement.
Utility model content
The utility model is intended to one of solve the problems of the technologies described above at least to a certain extent.For this reason, it is more energy-conservation that an object of the present utility model is to propose one, and superheated vapour consumption is few, and what cost was low contains lightweight oil water-gas shift system.
Aspect one of the present utility model, the utility model proposes a kind of containing lightweight oil water-gas shift system, this system comprises, shift converter, in described shift converter, there is catalysis and carry out the catalyzer of redox reaction containing lightweight oil water-gas, be connected with described shift converter with the waste heat boiler of gas cooling conversion of discharging in described shift converter, the gas-liquid separation device being connected with described waste heat boiler be connected for the oily-water seperating equipment that the isolated liquid mixture of described gas-liquid separation device is carried out to oily water separation with described gas-liquid separation device.
According to can effectively converting the carbon monoxide containing in lightweight oil water-gas containing lightweight oil water-gas shift system of the utility model embodiment, the equipment of the water-gas that more traditional conversion contains lightweight oil has saved more interchanger, and then avoided the consumption of superheated vapour, thereby significantly reduce the processing cost of facility investment and energy consumption aspect.
In addition, can also there is following additional technical characterictic according to the utility model above-described embodiment containing lightweight oil water-gas shift system:
In the utility model, the described lightweight oil water-gas shift system that contains may further include: preheater, described preheater has water-gas import, water-gas outlet, gas outlet after gas import and conversion after conversion, described water-gas outlet is connected with the inlet mouth of described shift converter, and after described conversion, gas import is connected with the air outlet of described shift converter, and after described conversion, gas outlet is connected with the inlet mouth of described waste heat boiler.Thus, the heat that can make full use of reacted mixed gas carries out preheating to the lightweight oil water-gas that contains before reacting, and makes its temperature of reaction that reaches 250～380 DEG C, and then improves the conversion efficiency containing lightweight oil water-gas.
In the utility model, described gas-liquid separation device comprises multi-stage gas-liquid separation assembly, and described multi-stage gas-liquid separation assembly comprises one-level gas-liquid separation assembly, secondary gas-liquid separation assembly, three grades of gas-liquid separation assemblies.Thus, can significantly improve gas-liquid separation efficiency, thereby improve coal gas purity.
In the utility model, described one-level gas-liquid separation assembly comprises the first gas-liquid separator, and described secondary gas-liquid separation assembly comprises the first water cooler and the second gas-liquid separator, and described three grades of gas-liquid separation assemblies comprise the second water cooler and the 3rd gas-liquid separator.Thus, can further improve gas-liquid separation efficiency.
In the utility model, described oily-water seperating equipment comprises the first water-and-oil separator and the second water-and-oil separator, described the first water-and-oil separator is connected with described the 3rd gas-liquid separator, to the liquid mixture of discharging from described the 3rd gas-liquid separator is separated, described the second water-and-oil separator is connected with the second gas-liquid separator with described the first gas-liquid separator, to separating with the liquid mixture of discharging the second gas-liquid separator from described the first gas-liquid separator.
In the utility model, the described lightweight oil water-gas shift system that contains further comprises connected to carry out the processing air-lift device of air lift to separate the ammonia dissolving in the water obtaining from described the first water-and-oil separator with described the first water-and-oil separator.Thus, can effectively avoid the circulation accumulative total of minor component, improve the purity of conversion gas, reduce ammonia dissolved water simultaneously and suffered equipment is caused to corrosion.
In the utility model, described waste heat boiler comprises connected successively primary waste heat boiler and secondary waste heat boiler.Thus, can significantly improve cooling efficiency.
In the utility model, described the first water cooler is de-salted water water cooler, and described the second water cooler is water recirculator.Thus, can further improve cooling efficiency.
In the utility model, the described lightweight oil water-gas shift system that contains further comprises: the 4th water cooler, described the 4th water cooler is connected with described the first gas-liquid separator, the second gas-liquid separator and described the second water-and-oil separator, for carrying out cooling to the liquid mixture of discharging from described the first gas-liquid separator and the second gas-liquid separator.Thus, can be so that further the oil-water mixture that contains water vapour and lightweight oil be carried out to oily water separation.
Brief description of the drawings
Above-mentioned and/or additional aspect of the present utility model and advantage accompanying drawing below combination is understood becoming the description of embodiment obviously and easily, wherein:
Fig. 1 is the structural representation containing lightweight oil water-gas shift system according to an embodiment of the utility model;
Fig. 2 is the structural representation containing lightweight oil water-gas shift system according to another embodiment of the utility model;
Fig. 3 is the schema that lightweight oil water-gas shift system contains lightweight oil water gas shift process that contains that adopts an embodiment of the utility model;
Fig. 4 is the schema that lightweight oil water-gas shift system contains lightweight oil water gas shift process that contains that adopts an embodiment of the utility model.
Embodiment
Describe embodiment of the present utility model below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Be exemplary below by the embodiment being described with reference to the drawings, be intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.
In addition, term " first ", " second " be only for describing object, and can not be interpreted as instruction or hint relative importance or the implicit quantity that indicates indicated technical characterictic.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the present utility model, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In the utility model, unless otherwise clearly defined and limited, the terms such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be also electrical connection; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can understand as the case may be the concrete meaning of above-mentioned term in the utility model.
Aspect one of the present utility model, the utility model proposes a kind of containing lightweight oil water-gas shift system, below with reference to Fig. 1-2, the lightweight oil water-gas shift system that contains of the utility model embodiment is described in detail, according to embodiment of the present utility model, this system comprises:
Shift converter 100: there is catalysis in shift converter 100 and carry out the catalyzer of redox reaction containing lightweight oil water-gas, for passing in the shift converter 100 with catalyzer containing lightweight oil water-gas and redox reaction occur, thereby can obtain the mixed gas that contains carbonic acid gas, hydrogen, water vapour and gaseous state lightweight oil.According to embodiment of the present utility model, shift converter can have the air outlet 102 of inlet mouth 101 and the shift converter of shift converter.
In embodiment more of the present utility model, contain type and the composition of lightweight oil water-gas and be not particularly limited, can be for example a kind of industrial gas of manufacturing as carrier pulping taking low grade coals such as brown coal as raw material oil.According to specific embodiment of the utility model, be carbon monoxide and hydrogen, water vapour and the gaseous light oil taken out of from vapourizing furnace containing the main component of lightweight oil water-gas.Because gaseous light oil ratio is easier to affect carbon monoxide and water vapour generation redox reaction, or the benzene comprising in gaseous light oil and toluene also reacts and produces new material, and then impact conversion obtains the purity of coal gas.Contriver of the present utility model finds, contains the temperature of reaction of lightweight oil water-gas in shift converter by control, can effectively avoid lightweight oil to impact redox reaction.Can avoid thus removing lightweight oil to carrying out condensation containing lightweight oil water-gas in advance, and then can avoid mass energy waste.
According to specific embodiment of the utility model, the conversion of the water-gas of existing lightweight oil reacts in order to prevent other compositions in lightweight oil and water-gas, and then in advance lightweight oil is carried out to condensation separation, causes processing cost too high.The utility model utilizes the higher feature of temperature of the reactions such as lightweight oil generation hydrogenation, by controlling and selecting the transformationreation temperature of water-gas not overlap with the temperature of reaction of lightweight oil, and then can effectively reach lightweight oil and do not react, and only carbon monoxide and water vapour generation redox reaction.
According to specific embodiment of the utility model, screen by great many of experiments, contriver finds, can make to react under the condition of 250～380 DEG C containing lightweight oil water-gas.This temperature range is not only not less than water vapour dew-point temperature, lightweight oil liquefaction temperature and catalyzer light-off temperature, can effectively avoid water vapour and lightweight oil to be condensed into liquid state, can also make catalyzer produce katalysis simultaneously, further improve the reaction efficiency of carbon monoxide and water vapour, and then improve the purity of coal gas.Carry out at 250～380 DEG C by controlling reduction reaction simultaneously, can also effectively prevent other component generation chemical reactions in benzene in lightweight oil and toluene and water-gas, and then the purity of the coal gas for preparing of raising.
Waste heat boiler 200, waste heat boiler 200 is connected with shift converter 100, for gas discharge conversion in shift converter is carried out to cooling process.According to embodiment of the present utility model, waste heat boiler 200 can comprise connected successively primary waste heat boiler 210 and secondary waste heat boiler 220.Concrete, gas after conversion after the mixed gas reaction that contains carbonic acid gas, hydrogen, water vapour and gaseous state lightweight oil of discharging in above-mentioned shift converter is carried out to the first cooling process through primary waste heat boiler and secondary waste heat boiler successively, thereby can obtain the first gas-liquid mixture of water, lightweight oil and carbonic acid gas, hydrogen, water vapour and gaseous light oil.
According to embodiment of the present utility model, adopt waste heat boiler that the reacted mixed gas of discharging from shift converter is carried out the refrigerant of the first cooling process and is not particularly limited, according to specific embodiment of the utility model, the refrigerant that adopts waste heat boiler to carry out the first cooling process to gas from the conversion of shift converter discharge can be waste heat boiler water.According to embodiment of the present utility model, for the temperature of the waste heat boiler water of the first cooling process and be not particularly limited, according to specific embodiment of the utility model, the temperature of waste heat boiler water can be 120 DEG C.Thus, can effectively carry out condensation to water vapor and lightweight oil.
According to embodiment of the present utility model, adopt primary waste heat boiler and secondary waste heat boiler to carry out cooling time, realize again and reclaiming converting the entrained heat of rear gas to the reacted mixed gas of discharging from shift converter.Can further improve thus cooling efficiency, and then improve the separation rate of water vapour and lightweight oil, improve the purity of coal gas.
Gas-liquid separation device 300, gas-liquid separation device 300 is connected with waste heat boiler 200, for gained gas-liquid mixture is carried out to gas-liquid separation processing, thereby can obtain the liquid mixture that contains water and liquefied light oil and the coal gas that contains carbonic acid gas, hydrogen.
According to embodiment of the present utility model, gas-liquid separation device 300 can comprise multi-stage gas-liquid separation assembly, according to specific embodiment of the utility model, multi-stage gas-liquid separation assembly comprises one-level gas-liquid separation assembly, secondary gas-liquid separation assembly, three grades of gas-liquid separation assemblies.According to embodiment of the present utility model, one-level gas-liquid separation assembly can comprise the first gas-liquid separator 310, secondary gas-liquid separation assembly comprises that the first water cooler 320 and 330, three grades of gas-liquid separation assemblies of the second gas-liquid separator comprise the second water cooler 340 and the 3rd gas-liquid separator 350.
According to specific embodiment of the utility model, adopt the first gas-liquid separator 310 to carry out the first gas-liquid separation processing to the first gas-liquid mixture obtaining after the first cooling process, to obtain the first liquid mixture that contains water and liquefied light oil and the first coal gas that contains carbonic acid gas, hydrogen.
According to embodiment of the present utility model, adopt the first water cooler 320 to carry out the second cooling process to the first coal gas obtaining from the first separator 310, to obtain the second gas-liquid mixture of water, lightweight oil and carbonic acid gas, hydrogen, water vapour and gaseous light oil.According to embodiment of the present utility model, in the first water cooler 320, carry out the refrigerant of the second cooling process employing and be not particularly limited, according to specific embodiment of the utility model, the refrigerant that the second cooling process adopts can be de-salted water.According to embodiment of the present utility model, the temperature of de-salted water is also not particularly limited, and according to specific embodiment of the utility model, can be 40 DEG C for the temperature of the de-salted water of the second cooling process.Thus, can significantly improve the second cooling efficiency, thereby improve the first coal gas purity.
According to specific embodiment of the utility model, adopt the second gas-liquid separator 330 to carry out the second gas-liquid separation processing to the second gas-liquid mixture, to obtain the second liquid mixture that contains water and liquefied light oil and the second coal gas that contains carbonic acid gas, hydrogen.
According to specific embodiment of the utility model, adopt the second water cooler 340 to carry out the 3rd cooling process to the second coal gas of gained, to obtain the 3rd gas-liquid mixture of water, lightweight oil and carbonic acid gas, hydrogen, water vapour and gaseous light oil.According to embodiment of the present utility model, in the second water cooler, carry out the refrigerant of the 3rd cooling process and be not particularly limited, according to specific embodiment of the utility model, the refrigerant that carries out the 3rd cooling process can be recirculated water.According to embodiment of the present utility model, the temperature of recirculated water is also not particularly limited, and according to specific embodiment of the utility model, the temperature of recirculated water can be 32 degrees Celsius.Thus, can carry out abundant condensation to water vapour and lightweight oil remaining in the second coal gas, to further improve the purity of the second coal gas.
According to specific embodiment of the utility model, adopt the 3rd gas-liquid separator 350 to carry out the 3rd gas-liquid separation processing to gained the 3rd gas-liquid mixture, to obtain the 3rd liquid mixture that contains water and liquefied light oil and the 3rd coal gas that contains carbonic acid gas, hydrogen.Thus, can carry out abundant condensation to the water vapour and the lightweight oil that convert in rear gas, to further improve the purity of coal gas.
Oily-water seperating equipment 400, oily-water seperating equipment 400 is connected with gas-liquid separation device 300, and is suitable for 300 isolated liquid mixtures in gas-liquid separation device to carry out oily water separation.According to embodiment of the present utility model, oily-water seperating equipment 400 can comprise the first water-and-oil separator 410 and the second water-and-oil separator 420, according to embodiment of the present utility model, the first water-and-oil separator 410 is connected with the 3rd gas-liquid separator 350, to the liquid mixture of discharging from the 3rd gas-liquid separator 350 is separated.According to specific embodiment of the utility model, the second water-and-oil separator 420 is connected with the second gas-liquid separator 330 with the first gas-liquid separator 310, to the liquid mixture of discharging from the first gas-liquid separator 310 and the second gas-liquid separator 330 is carried out to oily water separation.Can obtain thus independent water and clean or white.
According to embodiment of the present utility model, further comprise containing lightweight oil water-gas shift system:
Preheater 500: according to embodiment of the present utility model, preheater 500 has water-gas import 501, water-gas outlet 502, gas outlet 504 after gas import 503 and conversion after conversion, according to specific embodiment of the utility model, water-gas outlet 502 is connected with the inlet mouth 101 of shift converter, and after conversion, gas import 503 is connected with the air outlet 102 of shift converter, and after conversion, gas outlet 504 is connected with the inlet mouth of waste heat boiler.Particularly, because the conversion of water-gas is thermopositive reaction, therefore, the heat that makes full use of reacted mixed gas carries out preheating to the lightweight oil water-gas that contains before reacting, make its temperature of reaction that reaches 250～380 DEG C, can further improve the variation efficiency containing lightweight oil water-gas.
Air-lift device 600, gas device 600 is connected with the first water-and-oil separator 410, to carry out stripping process to separate the ammonia dissolving in the water obtaining from the first water-and-oil separator 410.Particularly, because the temperature of the water obtaining after the 3rd cooling process is lower, ammonia level is wherein higher, therefore the ammonia in water is separated, and then effectively avoid the circulation of minor component to add up, improve the purity of conversion gas, reduced ammonia dissolved water simultaneously and suffered equipment is caused to corrosion.
The 4th water cooler 700: the four water coolers 700 are connected with the first gas-liquid separator 310, the second gas-liquid separator 330 and the second water-and-oil separator 420, to carry out cooling to the liquid mixture of discharging from the first gas-liquid separator 310 and the second gas-liquid separator 330.According to specific embodiment of the utility model, refrigerant being not particularly limited in the 4th water cooler, according to specific embodiment of the utility model, can adopt recirculated water to carry out the 4th cooling process.According to embodiment of the present utility model, the temperature that is used for the recirculated water of the 4th cooling process can be for not being particularly limited, according to specific embodiment of the utility model, the temperature that is used for the recirculated water of the 4th cooling process can be 32 DEG C, thus can be so that further carry out oily water separation with the oil-water mixture of water vapour and lightweight oil.
Have been described in detail containing lightweight oil water-gas shift system the utility model embodiment above, understand for convenient, adopt containing lightweight oil water gas shift process containing lightweight oil water-gas shift system and being described in detail of the utility model embodiment below with reference to Fig. 3-4 pair.According to embodiment of the present utility model, the method comprises;
S100: make containing lightweight oil water-gas generation redox reaction
First by passing in the shift converter with catalyzer and redox reaction occurs containing lightweight oil water-gas, to obtain the mixed gas that contains carbonic acid gas, hydrogen, water vapour and gaseous state lightweight oil.
In embodiment more of the present utility model, contain type and the composition of lightweight oil water-gas and be not particularly limited, can be for example a kind of industrial gas of manufacturing as carrier pulping taking low grade coals such as brown coal as raw material oil.According to specific embodiment of the utility model, be carbon monoxide and hydrogen, water vapour and the gaseous light oil taken out of from vapourizing furnace containing the main component of lightweight oil water-gas.Because gaseous light oil ratio is easier to affect carbon monoxide and water vapour generation redox reaction, or the benzene comprising in gaseous light oil and toluene also reacts and produces new material, and then impact conversion obtains the purity of coal gas.Contriver of the present utility model finds, contains the temperature of reaction of lightweight oil water-gas in shift converter by control, can effectively avoid lightweight oil to impact redox reaction.Can avoid thus removing lightweight oil to carrying out condensation containing lightweight oil water-gas in advance, and then can avoid mass energy waste.
According to specific embodiment of the utility model, the conversion of the water-gas of existing lightweight oil reacts in order to prevent other compositions in lightweight oil and water-gas, and then in advance lightweight oil is carried out to condensation separation, causes processing cost too high.The utility model utilizes the higher feature of temperature of the reactions such as lightweight oil generation hydrogenation, by controlling and selecting the transformationreation temperature of water-gas not overlap with the temperature of reaction of lightweight oil, and then can effectively reach lightweight oil and do not react, and only carbon monoxide and water vapour generation redox reaction.
According to specific embodiment of the utility model, screen by great many of experiments, contriver finds, can make to react under the condition of 250～380 DEG C containing lightweight oil water-gas.This temperature range is not only not less than water vapour dew-point temperature, lightweight oil liquefaction temperature and catalyzer light-off temperature, can effectively avoid water vapour and lightweight oil to be condensed into liquid state, can also make catalyzer produce katalysis simultaneously, further improve the reaction efficiency of carbon monoxide and water vapour, and then improve the purity of coal gas.Carry out at 250～380 DEG C by controlling reduction reaction simultaneously, can also effectively prevent other component generation chemical reactions in benzene in lightweight oil and toluene and water-gas, and then the purity of the coal gas for preparing of raising.
S200: the first cooling process
In embodiment more of the present utility model, the reacted mixed gas of discharging in above-mentioned shift converter is carried out to the first cooling process, to obtain the first gas-liquid mixture of water, lightweight oil and carbonic acid gas, hydrogen, water vapour and gaseous light oil.According to specific embodiment of the utility model, can utilize waste heat boiler to carry out the first cooling process.For example also can adopt two waste heat boilers of series connection to carry out the first cooling process, can further improve thus cooling efficiency, and then improve the separation rate of water vapour and lightweight oil, improve the purity of coal gas.According to embodiment of the present utility model, the device that the first cooling process adopts is not particularly limited, and according to specific embodiment of the utility model, the first cooling process can adopt waste heat boiler to carry out producing saturation steam.According to embodiment of the present utility model, the temperature of the waste heat boiler water that the first cooling process adopts is also not particularly limited, according to concrete example of the present utility model, the temperature of the waste heat boiler water that the first cooling process adopts can be 120 DEG C, thus, can effectively carry out condensation to water vapor and lightweight oil.
S300: the first gas-liquid separation processing
According to specific embodiment of the utility model, the first gas-liquid mixture obtaining is carried out to the first gas-liquid separation, to obtain the first liquid mixture that contains water and liquefied light oil and the first coal gas that contains carbonic acid gas, hydrogen after the first cooling process.
S400: to carrying out preheating containing lightweight oil water-gas
According to specific embodiment of the utility model, can further include containing lightweight oil water gas shift process of above-described embodiment: before sending into containing lightweight oil water-gas, in shift converter, redox reaction occurring, utilize the reacted mixed gas that shift converter is discharged to carry out preheating to containing lightweight oil water-gas.Because the conversion of water-gas is thermopositive reaction, therefore, the heat that makes full use of reacted mixed gas carries out preheating to the lightweight oil water-gas that contains before reacting, and makes its temperature of reaction that reaches 250～380 DEG C, can further improve the variation efficiency containing lightweight oil water-gas.
S500: the second cooling process
According to specific embodiment of the utility model, the lightweight oil water gas shift process that contains of above-described embodiment can further include:
The first coal gas obtaining in step S300 is carried out to the second cooling process, to obtain the second gas-liquid mixture of water, lightweight oil and carbonic acid gas, hydrogen, water vapour and gaseous light oil.According to embodiment of the present utility model, the refrigerant that the second cooling process adopts is also not particularly limited, and according to specific embodiment of the utility model, the refrigerant that the second cooling process adopts can be de-salted water.According to embodiment of the present utility model, the temperature of de-salted water is also not particularly limited, and according to specific embodiment of the utility model, can be 40 DEG C for the temperature of the de-salted water of the second cooling process.Thus, can significantly improve the second cooling efficiency, thereby improve the first coal gas purity.
S600: the second gas-liquid separation processing
According to specific embodiment of the utility model, the second gas-liquid mixture obtaining is carried out to the second gas-liquid separation processing, to obtain the second liquid mixture that contains water and liquefied light oil and the second coal gas that contains carbonic acid gas, hydrogen in step S500.
S700: the 3rd cooling process
According to specific embodiment of the utility model, can further include containing lightweight oil water gas shift process of above-described embodiment: the second coal gas obtaining in step S600 is carried out to the 3rd cooling process, to obtain the 3rd gas-liquid mixture of water, lightweight oil and carbonic acid gas, hydrogen, water vapour and gaseous light oil.According to embodiment of the present utility model, carry out the refrigerant of the 3rd cooling process and be not particularly limited, according to specific embodiment of the utility model, the refrigerant that carries out the 3rd cooling process can be recirculated water.According to embodiment of the present utility model, the temperature of recirculated water is also not particularly limited, and according to specific embodiment of the utility model, the temperature of recirculated water can be 32 degrees Celsius.Thus, can carry out abundant condensation to water vapour and lightweight oil remaining in the second coal gas, to further improve the purity of the second coal gas.
S800: the 3rd gas-liquid separation processing
According to specific embodiment of the utility model, the 3rd gas-liquid mixture obtaining is carried out to the 3rd gas-liquid separation processing, to obtain the 3rd liquid mixture that contains water and liquefied light oil and the 3rd coal gas that contains carbonic acid gas, hydrogen in step S700.
S900: the 4th cooling process
According to specific embodiment of the utility model, the lightweight oil water gas shift process that contains of above-described embodiment can further include: the second liquid mixture obtaining in the first liquid mixture obtaining in step S300 and step S600 is carried out to the 4th cooling process.Thus can be so that further carry out oily water separation with the oil-water mixture of water vapour and lightweight oil.According to embodiment of the present utility model, carry out the refrigerant of the 4th cooling process and be not particularly limited, according to specific embodiment of the utility model, the refrigerant that carries out the 4th cooling process can be recirculated water.According to embodiment of the present utility model, the temperature of recirculated water is also not particularly limited, and according to specific embodiment of the utility model, the temperature of recirculated water can be 32 degrees Celsius.Thus, can significantly improve the efficiency of the 3rd coal gas.
S1000: oily water separation processing
According to specific embodiment of the utility model, respectively the mixture obtaining through the 4th cooling process in step S900 is carried out to oily water separation processing, and the 3rd liquid mixture obtaining in step S800 is carried out to oily water separation processing, to obtain water and liquefied light oil.
S1100: stripping process
According to specific embodiment of the utility model, by carrying out stripping process by the 3rd liquid mixture obtaining in step S800 being carried out to the water that oily water separation processing obtains in step S1000, so that except the ammonia in anhydrating.Because the temperature of the water obtaining after the 3rd cooling process is lower, ammonia level is wherein higher, therefore the ammonia in water is separated, and then has effectively avoided the circulation accumulative total of minor component, improve the purity of conversion gas, reduced ammonia dissolved water simultaneously and suffered equipment is caused to corrosion.
Below with reference to specific embodiment, the utility model is described, it should be noted that, these embodiment are only descriptive, and limit never in any form the utility model.
Embodiment
As shown in Figure 2, comprise containing lightweight water-gas shift system: 500-preheater; 100-shift converter; The useless pot of 210-first; The useless pot of 220-second; 310-the first condensate separator; 320-de-salted water water cooler; 330-the second condensate separator; 340-water recirculator 1; 350 the 3rd condensate separators; 410-the first water-and-oil separator; 420-the second water-and-oil separator; 700-water recirculator 2; 600-stripping tower.
Treatment step: 100,000 mark sides/hour butt raw gas (containing lightweight water-gas) is passed in preheater-500, and carry out thermal exchange with shift converter-100 conversion gas out, temperature is increased to 250 DEG C of left and right, enters shift converter and carries out water gas shift reaction.The conversion gas that goes out shift converter-100 is cooled to 350 DEG C through preheater 500 temperature by 380 DEG C.This conversion gas successively enters the first useless pot-210 and the second useless pot-220, is utilizing respectively after heat by-product 2.5MPa, 0.5MPa saturation steam, and temperature is down to 160 DEG C.Now the water in gas phase and lightweight oil are partially condensated as liquid state, enter the first condensation separator-310 and carry out liquid phase separation.Gas phase part enters de-salted water water cooler-320 and continues heat-shift, and temperature is down to 80 DEG C, and now the water in gas phase and lightweight oil are partially condensated as liquid state, enter the second condensation separator-330 and carry out liquid phase separation.Gas phase part enters water recirculator 1-340 and carries out last heat-shift, and temperature is down to 40 DEG C, carries out after liquid phase separation gas phase part fed downstream operation in the 3rd condensation separator-350.
The liquid phase component separating in first, second condensate separator enters water recirculator 2-700 after mixing and is cooled to after 40 DEG C, enters the second water-and-oil separator-420 water and lightweight oil are separated.The liquid phase component separating in the 3rd condensate separator enters the first water-and-oil separator-410 water and lightweight oil is separated.
In the water that separate the first water-and-oil separator-410, contain a certain amount of ammonia, be sent to stripping tower-600 steam air lift except ammonia.
Adopt said apparatus to carrying out conversion process containing lightweight oil water-gas, without consumption of calorie, also, without injecting superheated vapour, significantly reduce processing cost.
Comparative example
Adopt traditional conversion process to process 100,000 mark sides/hour butt raw gas (containing lightweight oil water-gas), adopt out the first through cooling containing lightweight oil water-gas of washing tower, lightweight oil condensation is wherein got off, and separate, part water vapour has also been condensed simultaneously, and water-gas has become dry gas.Send into shift converter through re-heat processing and superheated vapour again and carry out redox reaction.
Adopt above-mentioned traditional transform method to cause being provided with a large amount of interchanger in flow process, the complicated investment of flow process is high.Process the butt raw gas of above-mentioned flow, per hourly need to add 27 tons of superheated vapours, therefore consume a large amount of superheated vapours, cause the comprehensive energy consumption of production system higher.
In the description of this specification sheets, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present utility model or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And specific features, structure, material or the feature of description can be with suitable mode combination in any one or more embodiment or example.
Although illustrated and described embodiment of the present utility model above, be understandable that, above-described embodiment is exemplary, can not be interpreted as restriction of the present utility model, those of ordinary skill in the art can change above-described embodiment in the situation that not departing from principle of the present utility model and aim in scope of the present utility model, amendment, replacement and modification.
Claims (9)
1. one kind contains lightweight oil water-gas shift system, it is characterized in that, comprise: shift converter, in described shift converter, there is catalysis and carry out the catalyzer of redox reaction containing lightweight oil water-gas, be connected with described shift converter with the waste heat boiler of gas cooling conversion of discharging in described shift converter, the gas-liquid separation device being connected with described waste heat boiler be connected for the oily-water seperating equipment that the isolated liquid mixture of described gas-liquid separation device is carried out to oily water separation with described gas-liquid separation device.
2. the lightweight oil water-gas shift system that contains according to claim 1, is characterized in that, further comprises:
Preheater, described preheater has water-gas import, water-gas outlet, gas outlet after gas import and conversion after conversion, described water-gas outlet is connected with the inlet mouth of described shift converter, after described conversion, gas import is connected with the air outlet of described shift converter, and after described conversion, gas outlet is connected with the inlet mouth of described waste heat boiler.
3. according to claim 1 containing lightweight oil water-gas shift system, it is characterized in that, described gas-liquid separation device comprises multi-stage gas-liquid separation assembly, and described multi-stage gas-liquid separation assembly comprises one-level gas-liquid separation assembly, secondary gas-liquid separation assembly and three grades of gas-liquid separation assemblies.
4. state according to claim 3 containing lightweight oil water-gas shift system, it is characterized in that, described one-level gas-liquid separation assembly comprises the first gas-liquid separator, described secondary gas-liquid separation assembly comprises the first water cooler and the second gas-liquid separator, and described three grades of gas-liquid separation assemblies comprise the second water cooler and the 3rd gas-liquid separator.
According to claim 4 containing lightweight oil water-gas shift system, it is characterized in that, described oily-water seperating equipment comprises the first water-and-oil separator and the second water-and-oil separator, described the first water-and-oil separator is connected with described the 3rd gas-liquid separator, to the liquid mixture of discharging from described the 3rd gas-liquid separator is separated, described the second water-and-oil separator is connected with the second gas-liquid separator with described the first gas-liquid separator, to separating with the liquid mixture of discharging the second gas-liquid separator from described the first gas-liquid separator.
6. state according to claim 5 containing lightweight oil water-gas shift system, it is characterized in that, further comprise with described the first water-and-oil separator and being connected to carry out the air-lift device of stripping process to separate the ammonia dissolving in the water obtaining from described the first water-and-oil separator.
7. state according to claim 1 containing lightweight oil water-gas shift system, it is characterized in that, described waste heat boiler comprises connected successively primary waste heat boiler and secondary waste heat boiler.
8. state according to claim 4 containing lightweight oil water-gas shift system, it is characterized in that, described the first water cooler is de-salted water water cooler, described the second water cooler is water recirculator.
9. state according to claim 5 containing lightweight oil water-gas shift system, it is characterized in that, further comprise:
The 4th water cooler, described the 4th water cooler is connected with described the first gas-liquid separator, the second gas-liquid separator and described the second water-and-oil separator, for carrying out cooling to the liquid mixture of discharging from described the first gas-liquid separator and the second gas-liquid separator.
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| CN201420014216.9U CN203741036U (en) | 2014-01-09 | 2014-01-09 | Transformation system for light oil-containing water gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103771338A (en) * | 2014-01-09 | 2014-05-07 | 上海鑫兴化工科技有限公司 | Transformation method and transformation system of water gas containing light oil |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103771338A (en) * | 2014-01-09 | 2014-05-07 | 上海鑫兴化工科技有限公司 | Transformation method and transformation system of water gas containing light oil |
| CN103771338B (en) * | 2014-01-09 | 2016-06-01 | 上海尧兴投资管理有限公司 | Containing lightweight oil water-gas shift method with containing lightweight oil water-gas shift system |
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