CN210826083U - Fixed bed intermittent type gas making peculiar smell eliminating device - Google Patents
Fixed bed intermittent type gas making peculiar smell eliminating device Download PDFInfo
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- CN210826083U CN210826083U CN201921269185.0U CN201921269185U CN210826083U CN 210826083 U CN210826083 U CN 210826083U CN 201921269185 U CN201921269185 U CN 201921269185U CN 210826083 U CN210826083 U CN 210826083U
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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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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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Abstract
The utility model discloses a fixed bed intermittent type gas making peculiar smell remove device, its characterized in that gas making stove export connects bag collector behind waste heat recoverer, the export of bag collector connects the cooling tower, the export of cooling tower is all the way connects the gas cabinet, another way export partly connects the cooling tower after circulating pump and dividing wall formula cooler in proper order, another part connects the gas stripping tower, gas stripping tower top export connects the gas making stove, gas stripping tower bottom entry connects the fan export, gas stripping tower bottom export connects sewage treatment plant all the way, another way is divided into two the tunnel after the filter, wherein connect waste heat recoverer all the way, another way connects the gas making stove. The utility model discloses avoided semi-water gas and water direct contact to remove dust, cancelled the device and the cold water installation of washing circulating water of washing waste water sedimentation separation coal ash behind the washing dust removal, the cooling circulation water turbidity can fall below 50NTU, and quality of water improves, and the cooling tower is difficult for blockking up, and the pollutant clearance reaches more than 90%, has reduced the gas making in-process steam addition, has reduced steam consumption, reducible sewage discharge 1.0 ~ 1.2t/t ammonia.
Description
Technical Field
The invention relates to a process device for eliminating peculiar smell of normal-pressure intermittent coal gasification in a synthetic ammonia gas making process.
Background
In the synthetic ammonia industry, the gas making process of the intermittent coal gasification process takes anthracite or briquette as a raw material and takes air and water vapor as a gasifying agent to prepare raw material gas required by synthetic ammonia. Semi-water gas produced by a gas making furnace is washed by a water washing tower for fine dust removal and cooling after simple dust removal and waste heat recovery, the cooled semi-water gas finally enters a gas holder for the next process, the dust removal and cooling method needs a large amount of water washing, washing water needs to be settled for ash removal and cooling circulation for use, a large-area settling tank and a water cooling tower are needed for settlement and ash removal cooling, and more toxic, harmful, odorous and volatile gases such as H are contained in the water after the semi-water gas is washed2S、SO2HCN and other organic volatiles, which escape during settling and cooling, severely affecting the environment.CN201820988446.3 has proposed the method that reduces sewage production volume and effectively got rid of volatile gas to above problem, removes dust and adopts dry process belt dust removal, and the cooling adopts the dividing wall formula cooling mode, has cancelled and has made gas washing tower, settling basin and cooling tower, and the comdenstion water that produces is handled through the mode of air stripping, and the gas stripping gas is gone to gas making stove or boiler burning, and the waste water at the bottom of the tower is filtered and is gone to gas making jacket or waste boiler moisturizing all the way, and another way goes to water treatment facilities. The process device greatly reduces the sewage amount, radically eliminates the on-site peculiar smell and improves the environment. But has the practical problems of large project investment and great reconstruction difficulty.
Disclosure of Invention
The invention provides a fixed bed intermittent gas making peculiar smell eliminating device, which overcomes the defects in the prior art.
The fixed bed intermittent gas making peculiar smell eliminating device comprises a gas making furnace and a waste heat recoverer, and is characterized in that an outlet of the gas making furnace is connected with a bag type dust collector after passing through the waste heat recoverer, an outlet of the bag type dust collector is connected with a cooling tower, one path of outlet of the cooling tower is connected with a gas holder, one path of outlet of the other path of outlet is connected with the cooling tower after sequentially passing through a circulating pump and a dividing wall type cooler, the other portion of outlet is connected with a gas stripping tower, an outlet of the top of the gas stripping tower is connected with the gas making furnace, an inlet of the bottom of the gas stripping tower is connected with an outlet of a fan, one path of outlet of the bottom of the gas stripping tower is connected with a sewage treatment device.
The fixed bed intermittent gas making peculiar smell eliminating device comprises a gas making furnace and a waste heat recoverer, and is characterized in that an outlet of the gas making furnace is connected with a washing tower after passing through the waste heat recoverer, one path of the outlet of the washing tower is connected with a sealed settling tank, the other path of the outlet of the washing tower is connected with a cooling tower, one path of the outlet of the cooling tower is connected with a gas holder, one path of the outlet of the other path of the outlet is connected with the cooling tower after sequentially passing through a circulating pump and a dividing wall type cooler, the other path of the outlet is connected with the sealed settling tank, the other path of the outlet is connected with an air stripping tower, an outlet at the bottom of the sealed settling tank is connected with a solid waste treatment device, clear water of the sealed settling tank is connected with the washing tower after passing through the circulating pump, flash evaporation steam of the sealed settling tank is connected with a waste gas treatment device, an outlet at, one path is connected with a waste heat recoverer, and the other path is connected with a gas making furnace.
The invention achieves the technical progress that:
1. the invention adopts the bag type dust removal and the dividing wall type cooler, avoids the direct contact dust removal of semi-water gas and water, cancels a device for settling and separating coal ash from waste water after washing dust removal and a washing circulating water cooling device, and compared with the prior direct washing cooling and open type water cooling mode, the turbidity of the cooling circulating water can be reduced to below 50NTU from 150-200 NTU, the water quality is improved, and the cooling tower is not easy to block.
2. The invention adopts air to strip H in the wastewater2S、SO2HCN and other organic volatile matters and the stripping gas are delivered to the gas making furnace, so that the pollutants are decomposed in the gas making furnace or are returned to the semi-water gas for removal, the gas pollutants are effectively removed, compared with the existing direct dust removal and cooling device with the water cooling tower, the pollutant removal rate reaches over 90 percent, and the gas pollutants are effectively prevented from escaping into the atmosphere.
3. Because the stripping gas entering the gas making furnace contains a certain amount of water, the water is supplemented into the gas making furnace, the addition amount of steam in the gas making process is reduced, and the steam consumption is reduced;
4. the waste water after gas stripping is used as the water replenishing and recycling of the gas making furnace jacket and the waste heat recoverer, and the redundant waste water is sent to the sewage for treatment and then used as process water, so that the discharge of gas making sewage is thoroughly eliminated, the labor environment is improved, the water resource is saved, and the discharge of sewage is reduced by about 1.0-1.2 t/t ammonia.
5. Because the sedimentation of the coal ash is treated by adopting a sealed sedimentation tank, no pollution is caused, and the surrounding environment is not influenced.
6. Compared with the prior art CN201820988446.3, the cooling tower can be used for the old, or both the washing tower and the cooling tower can be used for the old, the transformation difficulty is small, and the investment is small.
Drawings
FIG. 1 is a schematic view of the structure of the process apparatus of the present invention.
FIG. 2 is another schematic structural diagram of the process apparatus of the present invention.
Detailed Description
Example 1: as shown in figure 1, semi-water gas from a gas making furnace in the fixed bed intermittent gas making peculiar smell eliminating device enters a waste heat recoverer to recover waste heat, saturated steam is produced as a byproduct, the semi-water gas with the temperature of about 160 ℃ from the waste heat recoverer enters a bag type dust collector to be dedusted, the semi-water gas dedusted by the bag type dust collector enters a cooling tower, closed circulation is adopted for cooling the gas in the cooling tower through a circulating pump 1, high-temperature circulating cooling water is cooled through a dividing wall type cooler 2 by clean circulating water, a part of condensed water condensed in the cooling tower returns to the top of the cooling tower to be condensed and washed after sequentially passing through the circulating pump 1 and the dividing wall type cooler 2, the gas entering the cooling tower is introduced into a gas holder with the temperature below 40 ℃ from the cooling tower, moisture in the semi-water gas is condensed in the cooling tower, the condensed water enters the upper part of a gas stripping tower after being pressurized, and stripping air, after air is contacted with condensed water in the stripping tower, harmful gas dissolved in the condensed water enters gas-phase stripping air, the stripping air is sent to a gas-making furnace for incineration after coming out from the top of the stripping tower, stripped wastewater enters a filter through one path of the bottom of the stripping tower to filter impurities in the wastewater and then is respectively sent to a gas-making furnace jacket and a waste heat recoverer for water supplement, the other path of redundant wastewater is sent to a sewage treatment process device for treatment, and the treated water reaching the standard is recycled as process water.
Example 2: as shown in fig. 2, the semi-water gas from the gas making furnace in the fixed bed intermittent gas making peculiar smell eliminating device enters a waste heat recoverer to recover waste heat, saturated steam is produced as a byproduct, the semi-water gas with the temperature of about 160 ℃ from the waste heat recoverer enters a washing tower to be washed and dedusted, washing water from the lower outlet of the washing tower enters a sealed sedimentation tank to be settled, the gas after being washed and dedusted by the washing tower is introduced into a cooling and cooling tower, the gas is cooled in the cooling and cooling tower by a circulating pump 1 in a closed circulation mode, high-temperature circulating cooling water is cooled by a partition wall type cooler 2 in clean circulating water, a part of condensed water cooled and cooled in the cooling tower returns to the top of the cooling and cooling tower to be cooled and washed into the gas of the cooling tower after sequentially passing through the circulating pump 1 and the partition wall type cooler 2, the gas with the temperature of less than 40, one part of the condensed water is led into a sealed settling basin, the other part of the condensed water enters the upper part of a stripping tower after being pressurized, stripping air is blown into the stripping tower by a stripping fan through the lower part of the stripping tower, harmful gas dissolved in the condensed water enters gas phase stripping air after the air contacts with the condensed water in the stripping tower, the air-stripping air is delivered to a gas making furnace for incineration after passing through the top of a gas stripping tower, the stripped wastewater enters a filter through the bottom of the gas stripping tower to filter impurities in the wastewater and then is respectively delivered to a gas making furnace jacket and a waste heat recoverer as water supplement, the other path of redundant wastewater is delivered to a sewage treatment process device for treatment, the treated water reaching the standard is recycled as process water, coal ash at an outlet at the bottom of a sealed settling tank is connected to a solid waste treatment device, flash steam at the upper part of the sealed settling tank is connected to a waste gas treatment device for combustion, and clear water of the sealed settling tank is connected to a washing tower through a circulating pump 3.
Claims (2)
1. A fixed bed intermittent gas making peculiar smell eliminating device comprises a gas making furnace and a waste heat recoverer, and is characterized in that an outlet of the gas making furnace is connected with a bag type dust collector after passing through the waste heat recoverer, an outlet of the bag type dust collector is connected with a cooling tower, one path of outlet of the cooling tower is connected with a gas cabinet, one path of outlet of the other path of outlet is connected with the cooling tower after sequentially passing through a circulating pump and a partition wall type cooler, the other portion of outlet is connected with a gas stripping tower, an outlet of the top of the gas stripping tower is connected with the gas making furnace, an inlet of the bottom of the gas stripping tower is connected with an outlet of a fan, one path of outlet of the bottom of the gas stripping tower is connected with a sewage treatment device.
2. A fixed bed intermittent gas-making peculiar smell eliminator as claimed in claim 1, which comprises a gas-making furnace and a waste heat recoverer, and is characterized in that an outlet of the gas-making furnace is connected with a washing tower after passing through the waste heat recoverer, one path of the outlet of the washing tower is connected with a sealed settling tank, the other path of the outlet is connected with a cooling and cooling tower, one path of the outlet of the cooling and cooling tower is connected with a gas holder, one portion of the outlet of the other path is connected with the cooling and cooling tower after passing through a circulating pump and a dividing wall type cooler in sequence, the other portion of the outlet is connected with the sealed settling tank, the other path is connected with an air stripping tower, an outlet at the bottom of the sealed settling tank is connected with a solid waste treatment device, clear water of the sealed settling tank is connected with the washing tower after passing through the circulating pump, flash evaporation gas of the sealed settling tank is connected with a waste gas treatment device, an outlet at, one path is connected with a waste heat recoverer, and the other path is connected with a gas making furnace.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921269185.0U CN210826083U (en) | 2019-08-07 | 2019-08-07 | Fixed bed intermittent type gas making peculiar smell eliminating device |
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| CN201921269185.0U CN210826083U (en) | 2019-08-07 | 2019-08-07 | Fixed bed intermittent type gas making peculiar smell eliminating device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110511788A (en) * | 2019-08-07 | 2019-11-29 | 刘金成 | A kind of fixed-bed intermittent gas making Peculiar smell eliminator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110511788A (en) * | 2019-08-07 | 2019-11-29 | 刘金成 | A kind of fixed-bed intermittent gas making Peculiar smell eliminator |
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