CN102941002B - Double-tower two-stage CO2 adsorbing and capturing system with heat recovery device - Google Patents
Double-tower two-stage CO2 adsorbing and capturing system with heat recovery device Download PDFInfo
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- CN102941002B CN102941002B CN201210520628.5A CN201210520628A CN102941002B CN 102941002 B CN102941002 B CN 102941002B CN 201210520628 A CN201210520628 A CN 201210520628A CN 102941002 B CN102941002 B CN 102941002B
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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
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- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
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Abstract
The invention discloses a double-tower two-stage CO2 adsorbing and capturing system with a heat recovery device, relating to a CO2 adsorbing and capturing system. The system is used for solving the problems of high temperature and low CO2 concentration of the conventional flue gas. A high temperature flue gas pipe is communicated with one end of a normal temperature flue gas pipe through a heat exchanger; the normal temperature flue gas pipe is communicated with a third valve and a valve III respectively; the third valve is communicated with a flue gas inlet of a first tower; the valve III is communicated with the flue gas inlet of a second tower; a gas outlet of a buffer tank is communicated with the inlet end of a seventh valve; the outlet ends of the seventh valve are respectively communicated with a second valve through a valve II; the valve II is communicated with the flue gas inlet of a second tower; the second valve is communicated with the flue gas inlet of the first tower; the second gas outlet of the buffer tank is communicated with the gas inlet of a ninth valve; the gas outlet of the ninth valve is communicated with the ninth valve and a valve IX respectively; the ninth valve is communicated with the gas inlet of a third tower; and the valve IX is communicated with the gas inlet of a fourth tower. The double-tower two-stage CO2 adsorbing and capturing system is used for adsorbing and capturing CO2.
Description
Technical field
The present invention relates to a kind of CO
2absorption capture systems.
Background technology
Along with the consumption of oil, coal and natural gas increases severely, air pollution is day by day serious.The greenhouse effects that excess carbon dioxide gas discharging causes have become serious world's problem.Thermal power plant is CO
2concentrated emission source, its CO2 discharge capacity accounts for mankind's activity CO
230% of total release, therefore, in order to realize CO
2reduction of discharging, developed the multinomial CO that existing power plant is taked
2separation, recovery measure, our object is the technology that research economy is strong, CO2 is reclaimed in separation that be easy to large-scale industrial application, wherein carbon dioxide capture and memory technology are a kind of new methods of very promising minimizing CO2 emissions.The obstacle of carbon dioxide capture technology maximum is exactly somewhat expensive, accounts for 75% of carbon dioxide capture and memory technology total cost.Therefore, research and develop the CO with low cost low energy consumption
2capture technique has realistic meaning.
Pressure-variable adsorption (pressure swing adsorption, PSA) technology is to utilize the difference of gas component characterization of adsorption on solid material and the characteristic that adsorbance changes with the variation of pressure, realizes separation or the purification of gas by periodic pressure conversion process.
The achievement in research that CO2 in flue gas is caught in absorption at present, ubiquity energy consumption is high, and organic efficiency is low, at home and abroad still in the experimental exploring stage.Under the current overall situation of controlling Global climate change, improve the selective adsorption capacity of adsorbent to CO2 in flue gas under low pressure, accelerate adsorption system processing speed, change separating process, reduce energy consumption, improve the CO2 rate of recovery, and extend to engineering application, be problem at present in the urgent need to address.
Summary of the invention
The object of this invention is to provide a kind of double tower two-stage CO2 absorption capture systems with heat reclamation device, to solve the problem of the high temperature of existing flue gas and the low concentration problem of CO2.
The present invention solves the problems of the technologies described above the technical scheme of taking to be: described system comprises high-temperature flue gas pipe, heat exchanger, normal temperature fume pipe, the first tower, the second tower, the first outlet pipe, surge tank, cold water pipe, the 3rd tower, the 4th tower, normal temperature water pipe, high-temperature conduit, the first vavuum pump, the second outlet pipe, the second vavuum pump, air collector, the first valve, second valve, the 3rd valve, the 4th valve, the 5th valve, the 6th valve, the 7th valve, the 8th valve, the 9th valve, the tenth valve, the 11 valve, the 12 valve, the 13 valve, the 14 valve, valve one, valve two, valve three, valve four, valve five, valve six, valve seven, valve eight, valve nine, valve ten, valve 11, valve 12, valve 13, valve 14, the first valve, the second valve, the 3rd valve, the 4th valve, the 5th valve, the 6th valve, the 7th valve, the 8th valve, the 9th valve, the tenth valve, the 11 valve, the 12 valve, the 13 valve and the 14 valve, compose in parallel valve group with the 4th valve after the 3rd valve and the series connection of the first vavuum pump,
High-temperature flue gas pipe is communicated with one end of normal temperature fume pipe by heat exchanger, normal temperature fume pipe respectively with the 3rd valve and valve tee joint, the 3rd valve is communicated with the smoke inlet of the first tower, valve three is communicated with the smoke inlet of the second tower;
The top of the first tower is respectively equipped with downtake pipe and first row CO2 pipe, downtake pipe is provided with the 5th valve, the delivery port of the first tower is communicated with one end of the first outlet pipe by the first valve, the first outlet pipe is provided with the second valve, first row CO2 pipe is provided with the 4th valve, and the port of export of the 4th valve is communicated with the entrance point of valve group;
The top of the second tower is respectively equipped with second exhaust pipe and second row CO2 pipe, second exhaust pipe is provided with valve five, the delivery port of the second tower is communicated with one end of the first outlet pipe by valve one, second row CO2 pipe is provided with valve four, the port of export of valve four is communicated with the entrance point of valve group, and the port of export of valve group is communicated with the first air inlet of surge tank by the tenth valve;
The entrance point of the 7th valve of the gas outlet of surge tank is communicated with, and the port of export of the 7th valve is communicated with by valve two and second valve respectively, and valve two is communicated with the smoke inlet of the second tower, and second valve is communicated with the smoke inlet of the first tower;
Cold water pipe is communicated with the 7th valve, valve seven, the 14 valve and valve 14 respectively, and the 7th valve is communicated with the water inlet of the first tower, and valve seven is communicated with the water inlet of the second tower, and the 14 valve is communicated with the water inlet of the 3rd tower, and valve 14 is communicated with the water inlet of the 4th tower;
Normal temperature water pipe is communicated with one end of high-temperature conduit by heat exchanger, high-temperature conduit is provided with the first valve, the port of export of the first valve respectively with the 6th valve, valve six, the 13 valve and valve ten tee joints, the 6th valve be communicated with the water inlet of the first tower, valve six is communicated with the water inlet of the second tower, the 13 valve is communicated with the water inlet of the 3rd tower, valve 13 be communicated with the water inlet of the 4th tower;
The first gas outlet of surge tank is communicated with the air inlet of the 8th valve, and the gas outlet of the 8th valve is communicated with the tenth valve and valve ten respectively, and the tenth valve is communicated with the air inlet of the 3rd tower, and valve ten is communicated with the air inlet of the 4th tower;
The second gas outlet of surge tank is communicated with the air inlet of the 9th valve, and the gas outlet of the 9th valve is communicated with the 9th valve and valve nine respectively, and the 9th valve is communicated with the air inlet of the 3rd tower, and valve nine is communicated with the air inlet of the 4th tower;
The top of the 3rd tower is respectively equipped with the 3rd blast pipe and the 3rd row CO2 pipe, the 3rd blast pipe is provided with the 12 valve, the delivery port of the 3rd tower is communicated with one end of the second outlet pipe by the 8th valve, the second outlet pipe is provided with the 12 valve, the 3rd row CO2 pipe is provided with the 11 valve, the port of export of the 11 valve is communicated with the entrance point of the 6th valve or the 11 valve, and the port of export of the 11 valve is communicated with air collector by the 5th valve, and the outlet of air collector is provided with the 13 valve;
The top of the 4th tower is respectively equipped with the 4th blast pipe and the 4th row CO2 pipe, the 4th blast pipe is provided with valve 12, the delivery port of the 4th tower is communicated with one end of the second outlet pipe by valve eight, the 4th row CO2 pipe is provided with valve 11, the port of export of valve 11 is communicated with the entrance point of the 6th valve or the 11 valve, the port of export of the 6th valve is communicated with the entrance point of the 14 valve by the second vavuum pump, and the port of export of the 14 valve is communicated with the second air inlet of surge tank.
The present invention has following beneficial effect: the flue gas of power plant emission is removed H through pretreatment stage
2o, SO
x, and NO
xafter impurity, now, the pressure of flue gas is that nearly normal pressure, temperature are about 403K, CO
2concentration be 15% left and right, first, by after heat reclamation device and normal-temperature water heat exchange, temperature becomes 303K, enters the first adsorption tower and separates with the second adsorption tower pressure-swing absorption process.Through after separating-purifying, CO in gas product
2concentration can reach 40%-60%; And then, gas product is compressed to (0.2-0.5) MPa enters the second adsorption tower again and the 3rd adsorption tower carries out further separating-purifying, by CO
2be concentrated into more than 95%.
The effect of adsorption tower is the CO adsorbing in the flue gas that flows through adsorption tower
2gas.The effect of heat exchanger is the heat of recovered flue gas, and by the heat heating normal-temperature water of flue gas, flue gas cool-down, to normal temperature, is beneficial to absorption simultaneously, and the hot water heating up is at desorption stepwise heating adsorption tower, is beneficial to desorption.Two adsorption towers are alternations, and when a tower is in adsorption process, another tower is in desorption process.In each tower, started by pressurization absorption, independently process is pressurizeed several steps such as absorption, gas purging, desorption by heating, step-down gas storage, desorption column cooling by the CO in flue gas successively
2gas absorption desorption are separated.
Brief description of the drawings
Fig. 1 is overall structure schematic diagram of the present invention.
Detailed description of the invention
Detailed description of the invention one: in conjunction with Fig. 1, present embodiment is described, the system of present embodiment comprises high-temperature flue gas pipe 1, heat exchanger 2, normal temperature fume pipe 3, the first tower 4, the second tower 5, the first outlet pipe 6, surge tank 7, cold water pipe 8, the 3rd tower 9, the 4th tower 10, normal temperature water pipe 11, high-temperature conduit 12, the first vavuum pump 13, the second outlet pipe 14, the second vavuum pump 15, air collector 16, the first valve A1, second valve A2, the 3rd valve A3, the 4th valve A4, the 5th valve A5, the 6th valve A6, the 7th valve A7, the 8th valve A8, the 9th valve A9, the tenth valve A10, the 11 valve A11, the 12 valve A12, the 13 valve A13, the 14 valve A14, valve one B1, valve two B2, valve three B3, valve four B4, valve five B5, valve six B6, valve seven B7, valve eight B8, valve nine B9, valve ten B10, valve 11 B11, valve 12 B12, valve 13 B13, valve 14 B14, the first valve V1, the second valve V2, the 3rd valve V3, the 4th valve V4, the 5th valve V5, the 6th valve V6, the 7th valve V7, the 8th valve V8, the 9th valve V9, the tenth valve V10, the 11 valve V11, the 12 valve V12, the 13 valve V13 and the 14 valve V14, compose in parallel valve group with the 4th valve V4 after the 3rd valve V3 and the first vavuum pump 13 series connection,
High-temperature flue gas pipe 1 is communicated with one end of normal temperature fume pipe 3 by heat exchanger 2, and normal temperature fume pipe 3 is communicated with the 3rd valve A3 and valve three B3 respectively, and the 3rd valve A3 is communicated with the smoke inlet of the first tower 4, and valve three B3 are communicated with the smoke inlet of the second tower 5;
The top of the first tower 4 is respectively equipped with downtake pipe 4-1 and first row CO2 pipe 4-2, downtake pipe 4-1 is provided with the 5th valve A5, the delivery port of the first tower 4 is communicated with one end of the first outlet pipe 6 by the first valve A1, the first outlet pipe 6 is provided with the second valve V2, first row CO2 pipe 4-2 is provided with the 4th valve A4, and the port of export of the 4th valve A4 is communicated with the entrance point of valve group;
The top of the second tower 5 is respectively equipped with second exhaust pipe 5-1 and second row CO2 pipe 5-2, second exhaust pipe 5-1 is provided with valve five B5, the delivery port of the second tower 5 is communicated with one end of the first outlet pipe 6 by valve one B1, second row CO2 pipe 5-2 is provided with valve four B4, the port of export of valve four B4 is communicated with the entrance point of valve group, and the port of export of valve group is communicated with the first air inlet of surge tank 7 by the tenth valve V10;
The entrance point of the 7th valve V7 of the gas outlet of surge tank 7 is communicated with, and the port of export of the 7th valve V7 is communicated with by valve two B2 and second valve A2 respectively, and valve two B2 are communicated with the smoke inlet of the second tower 5, and second valve A2 is communicated with the smoke inlet of the first tower 4;
Normal temperature water pipe 11 is communicated with one end of high-temperature conduit 12 by heat exchanger 2, high-temperature conduit 12 is provided with the first valve V1, the port of export of the first valve V1 is communicated with the 6th valve A6, valve six B6, the 13 valve A13 and valve 13 B13 respectively, the 6th valve A6 be communicated with the water inlet of the first tower 4, valve six B6 are communicated with the water inlet of the second tower 4, the 13 valve A13 is communicated with the water inlet of the 3rd tower 9, valve 13 B13 be communicated with the water inlet of the 4th tower 10;
The first gas outlet of surge tank 7 is communicated with the air inlet of the 8th valve V8, and the gas outlet of the 8th valve V8 is communicated with the tenth valve A10 and valve ten B10 respectively, and the tenth valve A10 is communicated with the air inlet of the 3rd tower 9, and valve ten B10 are communicated with the air inlet of the 4th tower 10;
The second gas outlet of surge tank 7 is communicated with the air inlet of the 9th valve V9, and the gas outlet of the 9th valve V9 is communicated with the 9th valve A9 and valve nine B9 respectively, and the 9th valve A9 is communicated with the air inlet of the 3rd tower 9, and valve nine B9 are communicated with the air inlet of the 4th tower 10;
The top of the 3rd tower 9 is respectively equipped with the 3rd blast pipe 9-1 and the 3rd row CO2 pipe 9-2, the 3rd blast pipe 9-1 is provided with the 12 valve A12, the delivery port of the 3rd tower 9 is communicated with one end of the second outlet pipe 14 by the 8th valve A8, the second outlet pipe 14 is provided with the 12 valve V12, the 3rd row CO2 pipe 9-2 is provided with the 11 valve A11, the port of export of the 11 valve A11 is communicated with the entrance point of the 6th valve V6 or the 11 valve V11, the port of export of the 11 valve V11 is communicated with air collector 16 by the 5th valve V5, the outlet of air collector 16 is provided with the 13 valve V13,
The top of the 4th tower 10 is respectively equipped with the 4th blast pipe 10-1 and the 4th row CO2 pipe 10-2, the 4th blast pipe 10-1 is provided with valve 12 B12, the delivery port of the 4th tower 10 is communicated with one end of the second outlet pipe 14 by valve eight B8, the 4th row CO2 pipe 10-2 is provided with valve 11 B11, the port of export of valve 11 B11 is communicated with the entrance point of the 6th valve V6 or the 11 valve V11, the port of export of the 6th valve V6 is communicated with the entrance point of the 14 valve V14 by the second vavuum pump 15, and the port of export of the 14 valve V14 is communicated with the second air inlet of surge tank 7.
The first tower 4, the second tower 5, the 3rd tower 9 and the interior activated carbon fiber of all filling of the 4th tower 10.
Detailed description of the invention two: present embodiment is described in conjunction with Fig. 1, the first valve A1 of present embodiment, second valve A2, the 3rd valve A3, the 4th valve A4, the 5th valve A5, the 6th valve A6, the 7th valve A7, the 8th valve A8, the 9th valve A9, the tenth valve A10, the 11 valve A11, the 12 valve A12, the 13 valve A13, the 14 valve A14, valve one B1, valve two B2, valve three B3, valve four B4, valve five B5, valve six B6, valve seven B7, valve eight B8, valve nine B9, valve ten B10, valve 11 B11, valve 12 B12, valve 13 B13, valve 14 B14, the first valve V1, the second valve V2, the 3rd valve V3, the 4th valve V4, the 5th valve V5, the 6th valve V6, the 7th valve V7, the 8th valve V8, the 9th valve V9, the tenth valve V10, the 11 valve V11, the 12 valve V12, the 13 valve V13 and the 14 valve V14 are magnetic valve.Other embodiment is identical with detailed description of the invention one.
Operation principle: first order absorption:
The absorption of boosting: open the 3rd valve A3 and the 5th valve A5, through desulfurization with removed the flue gas of nitrogen oxide, pass into first tower 4 (now, second tower 5 in not starting state) according to the flow of appointment by chilled, now, the first tower is adsorption tower.Due to the interior filling NACF of the first tower 4, therefore to the CO in flue gas
2adsorb the N not being adsorbed
2with a small amount of CO
2flow through after the first tower 4, through the 5th valve A5, enter atmosphere.As CO in the outlet flue gas that records first row CO2 pipe 4-2
2for concentration in entrance 90% time, think that adsorption process finishes.Now close the first valve A3 and the 5th valve A5, open valve three B3 and valve five B5, the second tower 5 becomes adsorption tower, and the first tower 4 enters desorption process, is desorption column.
Gas purging: open the 7th valve V7, second valve A2 and the 5th valve A5, by the CO higher purity obtaining above
2pass into the first tower 4 from bottom to top.Because now absorption has reached balance, NACF is CO absorption no longer
2, and in free space in tower, have the N that are not adsorbed in a large number
2therefore, the CO passing into
2can only promote the N in free space in tower
2get rid of by the 5th valve A5.After purge finishes, close the 7th valve V7, second valve A2 and the 5th valve A5.This process time used draws by the volume calculations of purge gas flow and tower.
Here it should be noted that, this step is from circulating for the second time, because in first circulation, also do not catch gas in surge tank 7, therefore not this step that circulates for the first time.
Desorption by heating: open the 4th valve A4, the 4th valve V4 and the tenth valve V10, open the first valve V1, the second valve V2, the first valve A1 and the 6th valve A6, utilize by the high-temperature water of flue gas, temperature on the first tower 4 is raise rapidly, make to be adsorbed on a large amount of Adsorption Phase CO on NACF
2escape out from adsorbent surface, become gas phase CO
2, enter surge tank 7.
Step-down gas storage: when the second tower 5 internal pressures drop to when identical with environmental pressure, close the 4th valve V4, open the 3rd valve V3, utilize the first vavuum pump 13 to reduce the pressure in the first tower 4, continue desorption, and the gas that desorption is gone out also deposits surge tank 7 in, so as in circulation below for gas purging step.In these two steps of desorption, when the 5th valve V5 is switched to the 6th valve V6, look the required CO of gas purging step
2amount determine.
Desorption column cooling: open the 7th valve A7, the first valve A1 and the second valve V2, common temperature cooling water is lowered the temperature to the first tower 4.After desorption process finishes, because the first tower 4 temperature are very high, cannot carry out adsorption step, therefore need cooling.When temperature on tower drops to below 30 DEG C, process finishes.Now, the adsorption process of the second tower 5 also finishes.Shut off valve three B3, open the 3rd valve A3, and now, the first tower 4 becomes adsorption tower, and the second tower 5 becomes desorption column.Enter next absorption and catch circulation.
Second level absorption:
In surge tank 7, be filled with after CO2 gas (be the first order adsorb the first tower 4 complete after desorption), just can open valve, enter second level absorption.The second level adsorb the operation principle of each adsorption tower and first order Adsorption Phase with.
The absorption of boosting: open the 8th valve V8, the tenth valve A10 and the 12 valve A12, by the low-purity CO2 flowing out from surge tank, pass into the 3rd tower 9 (now, tower B is in starting state not), and now, the 3rd tower 9 is adsorption tower.Due to the interior filling NACF of the 3rd tower 9, therefore to the CO in flue gas
2adsorb the N not being adsorbed
2with a small amount of CO
2flow through after adsorption tower, through the 12 valve A12, enter atmosphere.When recording CO in outlet flue gas
2for concentration in entrance 90% time, think that adsorption process finishes.Now close the tenth valve A10 and the 12 valve A12, open valve ten B10 and valve 12 B12, the 4th tower 10 becomes adsorption tower, and the 3rd tower 9 enters desorption process, is desorption column.
Gas purging: open the 9th valve V9, the 9th valve A9 and the 12 valve A12, by the CO higher purity obtaining above
2pass into the 3rd tower 9 from bottom to top.Because now absorption has reached balance, NACF is CO absorption no longer
2, and in free space in the 3rd tower 9, have the N that are not adsorbed in a large number
2therefore, the CO passing into
2can only promote the N in free space in tower
2get rid of by the 12 valve A12.After purge finishes, close the 9th valve V9, the 9th valve A9 and the 12 valve A12.This process time used draws by the volume calculations of purge gas flow and tower.
Desorption by heating: open the 11 valve A11, the 11 valve V11 and the 5th valve V5, open the first valve V1, the 12 valve V12, the 8th valve A8 and the 13 valve A13, utilize by the high-temperature water of flue gas, temperature on the 3rd tower 9 is raise rapidly, make to be adsorbed on a large amount of Adsorption Phase CO on NACF
2escape out from adsorbent surface, become gas phase CO
2, enter air collector 16.
Step-down gas storage: when the 3rd tower 9 internal pressures drop to when identical with environmental pressure, close the 11 valve V11, open the 6th valve V6, utilize the second vavuum pump 15 to reduce the pressure of the 3rd tower 9, continue desorption, and the gas that desorption is gone out also deposits surge tank 7 in, so as in circulation below for gas purging step.In these two steps of desorption, when the 5th valve V5 is switched to the 6th valve V6, look the required CO of gas purging step
2amount determine.
Desorption column cooling: open the 12 valve V12, the 8th valve A8, the 14 valve A14, desorption column is lowered the temperature.After desorption process finishes, because temperature on tower is very high, cannot carry out adsorption step, therefore need cooling.When temperature on the 3rd tower 9 drops to below 30 DEG C, process finishes.Now, the adsorption process of the 4th tower 10 also finishes.Shut off valve ten B10, open the tenth valve A10, and now, the 3rd tower 9 becomes adsorption tower, and the 4th tower 10 becomes desorption column.Enter next absorption and catch circulation.
Claims (2)
1. the absorption of the double tower two-stage CO2 with a heat reclamation device capture systems, is characterized in that described system comprises high-temperature flue gas pipe (1), heat exchanger (2), normal temperature fume pipe (3), the first tower (4), the second tower (5), the first outlet pipe (6), surge tank (7), cold water pipe (8), the 3rd tower (9), the 4th tower (10), normal temperature water pipe (11), high-temperature conduit (12), the first vavuum pump (13), the second outlet pipe (14), the second vavuum pump (15), air collector (16), the first valve (A1), second valve (A2), the 3rd valve (A3), the 4th valve (A4), the 5th valve (A5), the 6th valve (A6), the 7th valve (A7), the 8th valve (A8), the 9th valve (A9), the tenth valve (A10), the 11 valve (A11), the 12 valve (A12), the 13 valve (A13), the 14 valve (A14), valve one (B1), valve two (B2), valve three (B3), valve four (B4), valve five (B5), valve six (B6), valve seven (B7), valve eight (B8), valve nine (B9), valve ten (B10), valve 11 (B11), valve 12 (B12), valve 13 (B13), valve 14 (B14), the first valve (V1), the second valve (V2), the 3rd valve (V3), the 4th valve (V4), the 5th valve (V5), the 6th valve (V6), the 7th valve (V7), the 8th valve (V8), the 9th valve (V9), the tenth valve (V10), the 11 valve (V11), the 12 valve (V12), the 13 valve (V13) and the 14 valve (V14), compose in parallel valve group with the 4th valve (V4) after the 3rd valve (V3) and the first vavuum pump (13) series connection,
High-temperature flue gas pipe (1) is communicated with one end of normal temperature fume pipe (3) by heat exchanger (2), normal temperature fume pipe (3) is communicated with the 3rd valve (A3) and valve three (B3) respectively, the 3rd valve (A3) is communicated with the smoke inlet of the first tower (4), and valve three (B3) is communicated with the smoke inlet of the second tower (5);
The top of the first tower (4) is respectively equipped with downtake pipe (4-1) and first row CO
2pipe (4-2), downtake pipe (4-1) is provided with the 5th valve (A5), the delivery port of the first tower (4) is communicated with one end of the first outlet pipe (6) by the first valve (A1), the first outlet pipe (6) is provided with the second valve (V2), first row CO2 pipe (4-2) is provided with the 4th valve (A4), and the port of export of the 4th valve (A4) is communicated with the entrance point of valve group;
The top of the second tower (5) is respectively equipped with second exhaust pipe (5-1) and second row CO
2pipe (5-2), second exhaust pipe (5-1) is provided with valve five (B5), the delivery port of the second tower (5) is communicated with one end of the first outlet pipe (6) by valve one (B1), second row CO2 pipe (5-2) is provided with valve four (B4), the port of export of valve four (B4) is communicated with the entrance point of valve group, and the port of export of valve group is communicated with the first air inlet of surge tank (7) by the tenth valve (V10);
The entrance point of the 7th valve (V7) of the gas outlet of surge tank (7) is communicated with, the port of export of the 7th valve (V7) is communicated with by valve two (B2) and second valve (A2) respectively, valve two (B2) is communicated with the smoke inlet of the second tower (5), and second valve (A2) is communicated with the smoke inlet of the first tower (4);
Cold water pipe (8) is communicated with the 7th valve (A7), valve seven (B7), the 14 valve (A14) and valve 14 (B14) respectively, the 7th valve (A7) is communicated with the water inlet of the first tower (4), valve seven (B7) is communicated with the water inlet of the second tower (5), the 14 valve (A14) is communicated with the water inlet of the 3rd tower (9), and valve 14 (B14) is communicated with the water inlet of the 4th tower (10);
Normal temperature water pipe (11) is communicated with one end of high-temperature conduit (12) by heat exchanger (2), high-temperature conduit (12) is provided with the first valve (V1), the port of export of the first valve (V1) respectively with the 6th valve (A6), valve six (B6), the 13 valve (A13) and valve 13 (B13) are communicated with, the 6th valve (A6) be communicated with the water inlet of the first tower (4), valve six (B6) is communicated with the water inlet of the second tower 4, the 13 valve (A13) is communicated with the water inlet of the 3rd tower (9), valve 13 (B13) be communicated with the water inlet of the 4th tower (10),
The first gas outlet of surge tank (7) is communicated with the air inlet of the 8th valve (V8), the gas outlet of the 8th valve (V8) is communicated with the tenth valve (A10) and valve ten (B10) respectively, the tenth valve (A10) is communicated with the air inlet of the 3rd tower (9), and valve ten (B10) is communicated with the air inlet of the 4th tower (10);
The second gas outlet of surge tank (7) is communicated with the air inlet of the 9th valve (V9), the gas outlet of the 9th valve (V9) is communicated with the 9th valve (A9) and valve nine (B9) respectively, the 9th valve (A9) is communicated with the air inlet of the 3rd tower (9), and valve nine (B9) is communicated with the air inlet of the 4th tower (10);
The top of the 3rd tower (9) is respectively equipped with the 3rd blast pipe (9-1) and the 3rd row CO
2pipe (9-2), the 3rd blast pipe (9-1) is provided with the 12 valve (A12), the delivery port of the 3rd tower (9) is communicated with one end of the second outlet pipe (14) by the 8th valve (A8), the second outlet pipe (14) is provided with the 12 valve (V12), the 3rd row's CO2 pipe (9-2) is provided with the 11 valve (A11), the port of export of the 11 valve (A11) is communicated with the entrance point of the 6th valve (V6) or the 11 valve (V11), the port of export of the 11 valve (V11) is communicated with air collector (16) by the 5th valve (V5), the outlet of air collector (16) is provided with the 13 valve (V13),
The top of the 4th tower (10) is respectively equipped with the 4th blast pipe (10-1) and the 4th row CO
2pipe (10-2), the 4th blast pipe (10-1) is provided with valve 12 (B12), the delivery port of the 4th tower (10) is communicated with one end of the second outlet pipe (14) by valve eight (B8), the 4th row's CO2 pipe (10-2) is provided with valve 11 (B11), the port of export of valve 11 (B11) is communicated with the entrance point of the 6th valve (V6) or the 11 valve (V11), the port of export of the 6th valve (V6) is communicated with the entrance point of the 14 valve (V14) by the second vavuum pump (15), the port of export of the 14 valve (V14) is communicated with the second air inlet of surge tank (7).
In the first tower (4), the second tower (5), the 3rd tower (9) and the 4th tower (10), all fill activated carbon fiber.
2. the double tower two-stage CO with heat reclamation device according to claim 1
2absorption capture systems, is characterized in that the first valve (A1), second valve (A2), the 3rd valve (A3), the 4th valve (A4), the 5th valve (A5), the 6th valve (A6), the 7th valve (A7), the 8th valve (A8), the 9th valve (A9), the tenth valve (A10), the 11 valve (A11), the 12 valve (A12), the 13 valve (A13), the 14 valve (A14), valve one (B1), valve two (B2), valve three (B3), valve four (B4), valve five (B5), valve six (B6), valve seven (B7), valve eight (B8), valve nine (B9), valve ten (B10), valve 11 (B11), valve 12 (B12), valve 13 (B13), valve 14 (B14), the first valve (V1), the second valve (V2), the 3rd valve (V3), the 4th valve (V4), the 5th valve (V5), the 6th valve (V6), the 7th valve (V7), the 8th valve (V8), the 9th valve (V9), the tenth valve (V10), the 11 valve (V11), the 12 valve (V12), the 13 valve (V13) and the 14 valve (V14) are magnetic valve.
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| CN101108295A (en) * | 2007-05-18 | 2008-01-23 | 刘明 | Method of removing CO2 from switch gas by pressure swing adsorption with replacing and recycling step |
| CN202921145U (en) * | 2012-12-06 | 2013-05-08 | 东北林业大学 | Double-tower two-stage CO2 adsorption and capture system with heat recovery device |
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| CN202921145U (en) * | 2012-12-06 | 2013-05-08 | 东北林业大学 | Double-tower two-stage CO2 adsorption and capture system with heat recovery device |
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