CN107619055A - Tail gas recovery system of calcium carbide furnace - Google Patents
Tail gas recovery system of calcium carbide furnace Download PDFInfo
- Publication number
- CN107619055A CN107619055A CN201610560687.3A CN201610560687A CN107619055A CN 107619055 A CN107619055 A CN 107619055A CN 201610560687 A CN201610560687 A CN 201610560687A CN 107619055 A CN107619055 A CN 107619055A
- Authority
- CN
- China
- Prior art keywords
- gas
- tail gas
- calcium carbide
- carbide stove
- stove exhaust
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000005997 Calcium carbide Substances 0.000 title claims abstract description 58
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 title claims abstract description 58
- 238000011084 recovery Methods 0.000 title claims abstract description 31
- 239000007789 gas Substances 0.000 claims abstract description 95
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 77
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 238000001816 cooling Methods 0.000 claims abstract description 38
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 37
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000000428 dust Substances 0.000 claims abstract description 29
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 17
- 238000005406 washing Methods 0.000 claims abstract description 12
- 238000005507 spraying Methods 0.000 claims abstract description 7
- 238000005273 aeration Methods 0.000 claims description 36
- 230000015572 biosynthetic process Effects 0.000 claims description 27
- 238000003786 synthesis reaction Methods 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 22
- 239000007921 spray Substances 0.000 claims description 15
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 239000010865 sewage Substances 0.000 claims description 6
- 238000001179 sorption measurement Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 5
- 238000004176 ammonification Methods 0.000 claims description 3
- 238000003763 carbonization Methods 0.000 claims description 3
- 238000011010 flushing procedure Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 239000008213 purified water Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000002194 synthesizing effect Effects 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- 238000006477 desulfuration reaction Methods 0.000 abstract 2
- 230000023556 desulfurization Effects 0.000 abstract 2
- 239000000126 substance Substances 0.000 description 6
- 230000003139 buffering effect Effects 0.000 description 4
- 238000000746 purification Methods 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical group [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 239000003337 fertilizer Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
Abstract
The invention discloses a calcium carbide furnace tail gas recovery system which comprises a cooling device, a dust collector, a first gas washing tower, a buffer tank, a relay fan, a tail gas recovery gas cabinet, a second gas washing tower, a synthetic ammonia gas cabinet and a synthetic ammonia desulfurization device, wherein the dust collector, the first gas washing tower and the buffer tank are sequentially connected, a filter bag is arranged in the dust collector, an ash discharge valve is arranged at the bottom of the filter bag, a water spraying layer is arranged in the first gas washing tower, a water storage tank is arranged at the bottom of the first gas washing tower, the buffer tank is respectively connected with the relay fan and the tail gas recovery gas cabinet, the relay fan, the second gas washing tower and the synthetic ammonia gas cabinet are sequentially connected, and the synthetic ammonia gas cabinet is respectively connected with a nitrogen making gas making furnace and the synthetic ammonia desulfurization device. The tail gas recovery system provided by the invention has good cooling, dedusting and purifying effects, is energy-saving and environment-friendly, and is low in recovery cost, and the treated tail gas is used for synthesizing ammonia, so that the utilization rate and economic value of the tail gas are improved, and resource waste is avoided.
Description
Technical field
The present invention relates to environmental protection technical field, more particularly to a kind of calcium carbide stove exhaust recovery system.
Background technology
Furnace of calcium carbide is the capital equipment of calcium carbide production, and furnace of calcium carbide can produce tail gas during using this, and closed calcium carbide
80% above is carbon monoxide in furnace exhaust gas, also containing a large amount of dust and a small amount of nitrogen and hydrogen.At present it is known that furnace of calcium carbide
The processing of tail gas typically first carries out dust removal process, then directly discharges or is used as fuel, economic use value is low, in tail gas
Carbon monoxide be not utilized effectively, cause the waste of resource.
The content of the invention
The invention aims to solve shortcoming present in prior art, and a kind of calcium carbide stove exhaust proposed reclaims
System.
A kind of calcium carbide stove exhaust recovery system, including cooling device, dust arrester, the first aeration tower, surge tank, relay wind
Machine, tail gas recycle gas holder, the second aeration tower, synthesis ammonia cabinet and synthesis ammonia desulfurizer, it is cold that the cooling device includes first
But room and the second cooling chamber, the first cooling chamber outside installation water cold sleeve, the second cooling chamber outside installation air are cold
Condenser, second cooling chamber are connected with dust arrester, filter bag are provided with the dust arrester, and filter bag bottom is provided with and unloaded
Grey valve, the dust arrester top are provided with gas outlet, and the gas outlet is connected with the first aeration tower, inside first aeration tower
Water spray layer is installed, the first gas washing tower bottom is provided with aqua storage tank, is connected at the top of first aeration tower with surge tank top
Connect, the buffering pot bottom is provided with discharge outlet, and the surge tank is connected with relay air blower and tail gas recycle gas holder respectively, described to connect
Power blower fan is connected with the second aeration tower, and tail gas is delivered to the second aeration tower by relay air blower, and conjunction is delivered to again after scrubbed
Ammonification gas holder, the synthesis ammonia cabinet are connected with nitrogen Gas-making Furnace processed and synthesis ammonia desulfurizer respectively.
Preferably, the number of plies of the water spray layer is 2~6, and every layer of water spray layer uniformly installs 2~8 shower nozzles.
Preferably, the aqua storage tank connection sewage-treatment plant, and the purified water after sewage-treatment plant is handled is again
The water spray layer for supplying the first aeration tower uses.
Preferably, surge tank connection Roots's machine or frequency modulation blower fan.
The invention also provides a kind of calcium carbide stove exhaust recovery method, comprise the following steps：
S1：The cooling of calcium carbide stove exhaust, tail gas are used two level cooling method, are first down to exhaust temperature using water cold sleeve
Less than 450 DEG C, then reducing temperature twice is carried out using aerial condenser, temperature is down to 240~260 DEG C；
S2：The dedusting of calcium carbide stove exhaust, tail gas after cooling enter in dust arrester, and the dust of bulky grain falls into filter bag
In, and discharged and collected by unloading valve, remove the tail gas after bulky grain dust and the first aeration tower is entered by gas outlet, first
From top to bottom by water spray layer, the water in layer of spraying water is flowed down tail gas from top to bottom, and the tail gas by layer of spraying water is entered in aeration tower
Row rinses, and the tail gas after flushing, which enters surge tank, separates the moisture in tail gas, and tail gas is stored,；
S3：The conveying of calcium carbide stove exhaust, the tail gas stored in surge tank is in the presence of relay air blower by tail gas through second
Synthesis ammonia cabinet is delivered to after the secondary washing of aeration tower；
S4：Calcium carbide stove exhaust synthesizes ammonia, and nitrogen is added to synthesis ammonia cabinet and mixed with calcium carbide stove exhaust by nitrogen Gas-making Furnace processed,
After temp.-changing adsorption detar and impurity, it is forced into 0.8MPa and delivers to conversion section, and low temperature shifting process becomes CO in use
Change CO into2And H2, then using the CO in pressure swing adsorption technique or traditional carbonization technique removing conversion gas2, micro CO and CO2
Removing operation is carried out using methanol technics and methanation process, then Stress control is pressed into technique synthesis in 16~22MPa progress
Ammonia, complete the recovery of calcium carbide stove exhaust.
Preferably, then mixed in the S1 steps using exhaust temperature after aerial condenser cooling higher than 280 DEG C into tail gas
Enter nitrogen auxiliary temperature-reducing, can carry out diffusing processing if temperature still transfinites.
The invention provides a kind of calcium carbide stove exhaust recovery system, calcium carbide stove exhaust is cooled, at dedusting and purification
Reason, the temperature for making calcium carbide stove exhaust using cooling twice had both been less than the protection temperature of filter bag, while was higher than tar in tail gas again
Precipitation Temperature, be advantageous to dust removal operation, washing operation can improve the clean-up effect of tail gas twice, and in purification process
The water used can recycle, energy-conserving and environment-protective, and tail gas recycle gas holder plays a part of buffering, regulation, can reduce making for the energy
With, cost recovery is reduced, the calcium carbide stove exhaust after processing and nitrogen generation chemical reactive synthesis ammonia, and the ammonia synthesized can be used
In preparing chemical fertilizer or chemical field, the economic value of calcium carbide stove exhaust is improved, avoids the wasting of resources, and the invention also provides
A kind of method of calcium carbide stove exhaust recovery so that the recovery of calcium carbide stove exhaust is simple, and convenient, cost is low, and can improve furnace of calcium carbide
The utilization rate of tail gas, and the reaction efficiency of calcium carbide stove exhaust synthesis ammonia is high.
Brief description of the drawings
Fig. 1 is a kind of flow chart of calcium carbide stove exhaust recovery system proposed by the present invention.
In figure：1 cooling device, 2 dust arresters, 3 first aeration towers, 4 surge tanks, 5 relay air blowers, 6 tail gas recycle gas holders, 7
Second aeration tower, 8 synthesis ammonia cabinets, 9 nitrogen Gas-making Furnaces processed, 10 synthesis ammonia desulfurizers.
Embodiment
The present invention is made with reference to specific embodiment further to explain.
A kind of calcium carbide stove exhaust recovery system proposed by the present invention, including cooling device 1, dust arrester 2, the first aeration tower 3,
Surge tank 4, relay air blower 5, tail gas recycle gas holder 6, the second aeration tower 7, synthesis ammonia cabinet 8 and synthesis ammonia desulfurizer 10, institute
Stating cooling device 1 includes the first cooling chamber and the second cooling chamber, installation water cold sleeve outside first cooling chamber, and described second
Installation aerial condenser, second cooling chamber are connected with dust arrester 2, were provided with the dust arrester 2 outside cooling chamber
Filter bag, and filter bag bottom is provided with unloading valve, the top of dust arrester 2 is provided with gas outlet, the gas outlet and the first aeration tower 3
It is connected, water spray layer is installed inside first aeration tower 3, the number of plies of the water spray layer is 3, and every layer of water spray layer is uniformly pacified
5 shower nozzles are filled, the bottom of the first aeration tower 3 is provided with aqua storage tank, and the aqua storage tank connects sewage-treatment plant, and passes through sewage
The water spray layer that purified water after processing unit processing resupplies the first aeration tower 3 uses, the top of the first aeration tower 3 and buffering
The top of tank 4 is connected, and the bottom of surge tank 4 is provided with discharge outlet, the surge tank 4 respectively with relay air blower 5, tail gas recycle gas
Cabinet 6 is connected with Roots's machine, and the relay air blower 5 is connected with the second aeration tower 7, and tail gas is delivered to second by relay air blower 5
Aeration tower 7, is delivered to synthesis ammonia cabinet 8 again after scrubbed, the synthesis ammonia cabinet 8 is respectively with nitrogen Gas-making Furnace 9 processed and synthesizing ammonia
Desulfurizer 10 is connected, and the synthesis ammonia desulfurizer 10 includes cooling tower, water supply pump, heat-exchanger pump and circulating water pool.
A kind of calcium carbide stove exhaust recovery method, comprises the following steps：
S1：The cooling of calcium carbide stove exhaust, tail gas are used two level cooling method, are first down to exhaust temperature using water cold sleeve
Less than 450 DEG C, then reducing temperature twice is carried out using aerial condenser, temperature is down to 240~260 DEG C, dropped using aerial condenser
Exhaust temperature then mixes nitrogen auxiliary temperature-reducing higher than 280 DEG C into tail gas after temperature, can carry out diffusing place if temperature still transfinites
Reason；
S2：The dedusting of calcium carbide stove exhaust, tail gas after cooling enter in dust arrester 2, and the dust of bulky grain falls into filtering
In bag, and discharged and collected by unloading valve, removed the tail gas after bulky grain dust and the first aeration tower 3 is entered by gas outlet,
Tail gas is from top to bottom by water spray layer in first aeration tower 3, and the water in layer of spraying water flows down from top to bottom, to the tail by layer of spraying water
Gas is rinsed, and the tail gas after flushing, which enters surge tank 4, separates the moisture in tail gas, and tail gas is stored；
S3：The conveying of calcium carbide stove exhaust, the tail gas stored in surge tank 4 is in the presence of relay air blower 5 by tail gas through
Synthesis ammonia cabinet 8 is delivered to after the secondary washing of two aeration towers 7；
S4：Calcium carbide stove exhaust synthesizes ammonia, and nitrogen is added to synthesis ammonia cabinet 8 and mixed with calcium carbide stove exhaust by nitrogen Gas-making Furnace 9 processed
Close, after temp.-changing adsorption detar and impurity, be forced into 0.8MPa and deliver to conversion section, and in using low temperature shifting process by CO
It is transformed into CO2And H2, then using the CO in pressure swing adsorption technique or traditional carbonization technique removing conversion gas2, micro CO and
CO2Removing operation is carried out using methanol technics and methanation process, then presses technique to close in 16~22MPa progress Stress control
Ammonification, complete the recovery of calcium carbide stove exhaust.
The invention provides a kind of calcium carbide stove exhaust recovery system, calcium carbide stove exhaust is cooled, at dedusting and purification
Reason, the temperature for making calcium carbide stove exhaust using cooling twice had both been less than the protection temperature of filter bag, while was higher than tar in tail gas again
Precipitation Temperature, be advantageous to dust removal operation, washing operation can improve the clean-up effect of tail gas twice, and in purification process
The water used can recycle, energy-conserving and environment-protective, and tail gas recycle gas holder plays a part of buffering, regulation, can reduce making for the energy
With, cost recovery is reduced, the calcium carbide stove exhaust after processing and nitrogen generation chemical reactive synthesis ammonia, and the ammonia synthesized can be used
In preparing chemical fertilizer or chemical field, the economic value of calcium carbide stove exhaust is improved, avoids the wasting of resources, and the invention also provides
A kind of method of calcium carbide stove exhaust recovery so that the recovery of calcium carbide stove exhaust is simple, and convenient, cost is low, and can improve furnace of calcium carbide
The utilization rate of tail gas, and the reaction efficiency of calcium carbide stove exhaust synthesis ammonia is high.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (7)
1. a kind of calcium carbide stove exhaust recovery system, it is characterised in that including cooling device (1), dust arrester (2), the first aeration tower
(3), surge tank (4), relay air blower (5), tail gas recycle gas holder (6), the second aeration tower (7), synthesis ammonia cabinet (8) and synthesis ammonia
Desulfurizer (10), the cooling device (1) include the first cooling chamber and the second cooling chamber, installed outside first cooling chamber
Water cold sleeve, the second cooling chamber outside installation aerial condenser, second cooling chamber are connected with dust arrester (2), institute
State and filter bag is installed in dust arrester (2), and filter bag bottom is provided with unloading valve, and gas outlet is provided with the top of the dust arrester (2),
The gas outlet is connected with the first aeration tower (3), is provided with water spray layer inside first aeration tower (3), described first washes
Gas tower (3) bottom is provided with aqua storage tank, is connected at the top of first aeration tower (3) with surge tank (4) top, the surge tank
(4) bottom is provided with discharge outlet, and the surge tank (4) is connected with relay air blower (5) and tail gas recycle gas holder (6) respectively, described to connect
Power blower fan (5) is connected with the second aeration tower (7), and tail gas is delivered to the second aeration tower (7) by relay air blower (5), scrubbed
Be delivered to again afterwards synthesis ammonia cabinet (8), it is described synthesis ammonia cabinet (8) respectively with nitrogen Gas-making Furnace (9) processed and synthesize ammonia desulfurizer
(10) it is connected.
A kind of 2. calcium carbide stove exhaust recovery system according to claim 1, it is characterised in that it is described water spray layer the number of plies be
2~6, and every layer of water spray layer uniformly installs 2~8 shower nozzles.
3. a kind of calcium carbide stove exhaust recovery system according to claim 1, it is characterised in that the aqua storage tank connects sewage
Processing unit, and the purified water after sewage-treatment plant is handled resupplies the water spray layer use of the first aeration tower (3).
A kind of 4. calcium carbide stove exhaust recovery system according to claim 1, it is characterised in that surge tank (4) connection
Roots's machine or frequency modulation blower fan.
A kind of 5. calcium carbide stove exhaust recovery system according to claim 1, it is characterised in that the synthesis ammonia desulfurizer
(10) cooling tower, water supply pump, heat-exchanger pump and circulating water pool are included.
6. a kind of calcium carbide stove exhaust recovery method, it is characterised in that comprise the following steps：
S1：The cooling of calcium carbide stove exhaust, tail gas use two level cooling method, exhaust temperature first are down into 450 using water cold sleeve
Below DEG C, then using aerial condenser progress reducing temperature twice, temperature is set to be down to 240~260 DEG C；
S2：The dedusting of calcium carbide stove exhaust, tail gas after cooling enter in dust arrester (2), and the dust of bulky grain falls into filter bag
In, and discharged and collected by unloading valve, remove the tail gas after bulky grain dust and the first aeration tower (3) is entered by gas outlet,
Tail gas is from top to bottom by water spray layer in first aeration tower (3), and the water in layer of spraying water flows down from top to bottom, to by layer of spraying water
Tail gas is rinsed, and the tail gas after flushing, which enters surge tank (4), separates the moisture in tail gas, and tail gas is stored；
S3：The conveying of calcium carbide stove exhaust, in surge tank (4) tail gas of storage in the presence of relay air blower (5) by tail gas through the
Synthesis ammonia cabinet (8) is delivered to after the secondary washing of two aeration towers (7)；
S4：Calcium carbide stove exhaust synthesizes ammonia, and nitrogen is added to synthesis ammonia cabinet (8) and mixed with calcium carbide stove exhaust by nitrogen Gas-making Furnace (9) processed
Close, after temp.-changing adsorption detar and impurity, be forced into 0.8MPa and deliver to conversion section, and in using low temperature shifting process by CO
It is transformed into CO2And H2, then using the CO in pressure swing adsorption technique or traditional carbonization technique removing conversion gas2, micro CO and
CO2Removing operation is carried out using methanol technics and methanation process, then presses technique to close in 16~22MPa progress Stress control
Ammonification, complete the recovery of calcium carbide stove exhaust.
7. a kind of calcium carbide stove exhaust recovery system according to claim 6, it is characterised in that using sky in the S1 steps
Exhaust temperature then mixes nitrogen auxiliary temperature-reducing higher than 280 DEG C into tail gas after gas condenser cooling, can if temperature still transfinites
Carry out diffusing processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610560687.3A CN107619055A (en) | 2016-07-17 | 2016-07-17 | Tail gas recovery system of calcium carbide furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610560687.3A CN107619055A (en) | 2016-07-17 | 2016-07-17 | Tail gas recovery system of calcium carbide furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107619055A true CN107619055A (en) | 2018-01-23 |
Family
ID=61087856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610560687.3A Pending CN107619055A (en) | 2016-07-17 | 2016-07-17 | Tail gas recovery system of calcium carbide furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107619055A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108299157A (en) * | 2018-01-29 | 2018-07-20 | 安徽皖维高新材料股份有限公司 | A method of preparing ethyl alcohol using calcium carbide stove exhaust |
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Effective date of registration: 20220510 Address after: 755000 Shikong Town Industrial Park, Zhongning County, Zhongwei City, Ningxia Hui Autonomous Region Applicant after: Ningxia xingertai Chemical Group Co.,Ltd. Applicant after: Zhuo Yue Address before: 750103 Ningxia xingertai chemical group, Shikong Town Industrial Park, Zhongning County, Zhongwei City, Ningxia Hui Autonomous Region Applicant before: Zhuo Yue |
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Application publication date: 20180123 |