CN107899363B - Method for emergency disposal of ammonia leaked from liquid ammonia storage tank through water spray adsorption - Google Patents
Method for emergency disposal of ammonia leaked from liquid ammonia storage tank through water spray adsorption Download PDFInfo
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- CN107899363B CN107899363B CN201711406146.6A CN201711406146A CN107899363B CN 107899363 B CN107899363 B CN 107899363B CN 201711406146 A CN201711406146 A CN 201711406146A CN 107899363 B CN107899363 B CN 107899363B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 293
- 239000007921 spray Substances 0.000 title claims abstract description 242
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 212
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000001179 sorption measurement Methods 0.000 title claims abstract description 18
- 239000003595 mist Substances 0.000 claims description 9
- 238000005507 spraying Methods 0.000 claims description 9
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 239000012774 insulation material Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 230000004044 response Effects 0.000 abstract description 4
- 230000006872 improvement Effects 0.000 description 4
- 238000005057 refrigeration Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001988 toxicity Effects 0.000 description 2
- 231100000419 toxicity Toxicity 0.000 description 2
- 238000009835 boiling Methods 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
- B01D2257/406—Ammonia
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- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Treating Waste Gases (AREA)
Abstract
The method comprises the steps that an emergency system for adsorbing and disposing the ammonia leaked from the liquid ammonia storage tank through water spray is arranged on the periphery of the liquid ammonia storage tank, the emergency system for adsorbing and disposing the ammonia leaked from the liquid ammonia storage tank through the water spray comprises a water spray water supply pump, a water inlet of the water spray water supply pump is communicated with a water source through a water inlet water conveying pipeline, a water outlet of the water spray water supply pump is communicated with a water inlet of a water spray water conveying pipe, a filter and a water conveying electric valve are sequentially connected in series on the water spray water conveying pipe from a water inlet end to a water outlet end, and a water outlet is formed in a pipe section between the water inlet end and the filter on the water spray. The method for emergently disposing the ammonia leakage of the liquid ammonia storage tank through water spray adsorption has the advantages of high reliability, high response speed, high disposal efficiency, and capability of quickly linking when ammonia leakage is detected, and is used for effectively disposing and ensuring personnel safety.
Description
Technical Field
The invention relates to a method for emergency disposal of ammonia leaked from a liquid ammonia storage tank through water spray adsorption.
Background
Ammonia is used as a refrigeration medium, has the advantages of easy obtainment, low price, large unit refrigeration capacity, high heat release coefficient, small flow resistance and simple matching pipeline, is widely popularized and applied to refrigeration processes in various industries, is generally provided with a storage tank for storing liquid ammonia, has strong toxicity and flammability and explosiveness, and causes serious casualties, huge property loss and severe social influence due to serious ammonia leakage accidents of 8.31 which is a serious ammonia leakage accident of Shanghai Weng dynasty brand refrigeration industry Limited company and 6.3 which is a serious fire explosion accident of treasure Yuan Fengyou industry Limited company of Jilin province, etc. which happen to Shanghai Weng province. The emergent treatment measure of dealing with liquid ammonia storage tank ammonia leakage at present sets up the shower water above the liquid ammonia storage tank, can't deal with the ammonia rapidly and high-efficiently comprehensively and leak, has great risk hidden danger. Because ammonia has extremely strong water solubility, should form the cladding nature water smoke that possesses higher pressure around it when liquid ammonia storage tank leaks, carry out emergent efficient emergency treatment, ensure people's life and property safety, avoid taking place the environmental pollution accident simultaneously.
Disclosure of Invention
The invention aims to provide a method for emergency disposal of ammonia leaked from a liquid ammonia storage tank by water spray adsorption, which has the advantages of high reliability, high response speed and high disposal efficiency, can be quickly linked when ammonia leakage is detected, and is used for realizing effective disposal and ensuring personnel safety.
The invention discloses a method for emergency disposal of ammonia leaked from a liquid ammonia storage tank by water spray adsorption, which comprises the following steps:
A. an emergency system for treating ammonia leakage of the liquid ammonia storage tank by water spray adsorption is arranged on the periphery of the liquid ammonia storage tank, the emergency system for treating ammonia leakage of the liquid ammonia storage tank by water spray adsorption comprises a water spray water supply pump, a water inlet of the water spray water supply pump is communicated with a water source through a water inlet water conveying pipeline, a water outlet of the water spray water supply pump is communicated with a water inlet of the water spray water conveying pipeline, a filter and a water conveying electric valve are sequentially connected in series on the water spray water conveying pipeline from the water inlet end to the water outlet end, a water outlet is arranged on a pipe section, from the water inlet end to the filter, of the water spray water conveying pipeline, the water outlet is communicated with a water inlet of a water;
the water outlet of the water spray delivery pipe is communicated with the water inlet of the water distribution pipe, the water distribution pipe is arranged along the vertical direction, more than 3 water outlets are arranged on the water distribution pipe from top to bottom, each water outlet of the water distribution pipe is respectively communicated with the water inlet of one space spray covering device, the bottom end of the water distribution pipe is provided with a water outlet, and the water outlet of the water distribution pipe is provided with a water outlet electric valve;
each space spraying covering device comprises a front spray pipe, a left spray pipe, a rear spray pipe and a right spray pipe, wherein the front spray pipe is arranged along the left-right horizontal direction, the left end of the front spray pipe is communicated with the front end of the left spray pipe, the left spray pipe is arranged along the front-back horizontal direction, the rear end of the left spray pipe is communicated with the left end of the rear spray pipe, the rear spray pipe is arranged along the left-right horizontal direction, the right end of the rear spray pipe is communicated with the rear end of the right spray pipe, the right spray pipe is arranged along the front-back horizontal direction, the front end of the right spray pipe is communicated with the right end of the front spray pipe, the inward side surfaces of the front spray pipe, the left spray pipe, the rear spray pipe and the right spray pipe are respectively provided with a plurality of spray heads, the front spray pipe, the left spray pipe, the rear spray pipe and the right spray pipe of each space spraying covering device form a rectangular frame in a surrounding manner, a liquid ammonia storage tank is arranged in the middle of the rectangular, an ammonia gas detector capable of detecting ammonia gas leakage is arranged above the liquid ammonia storage tank;
the plurality of spray heads can spray the liquid ammonia storage tank to form water mist coating the liquid ammonia storage tank;
the water delivery electric valve, the water spray water supply pump, the water discharge electric valve and the ammonia gas detector are connected with an electric control system;
the outer side walls of the water inlet water conveying pipeline, the water spray water conveying pipeline, the water conveying electric valve, the filter, the water distribution pipe, the water drainage electric valve, each front spray pipe, each left spray pipe, each rear spray pipe and each right spray pipe are wrapped with heat insulation materials;
B. when the ammonia detector detects that the concentration of the leaked ammonia reaches the set alarm linkage concentration and the time of the alarm linkage concentration exceeds 1.0 second, the electric control system is linked to open the water delivery electric valve to enable the water spray water delivery pipe to be connected, then the electric control system starts the water spray water supply pump, the water spray water supply pump delivers water to all spray heads on each space spray covering device and each space spray covering device through the water spray water delivery pipe, and the spray heads spray the periphery of the liquid ammonia storage tank to form water spray for coating the liquid ammonia storage tank so as to absorb the ammonia leaked from the liquid ammonia storage tank;
C. and (3) treating the leakage part of the liquid ammonia storage tank, closing the water spray water supply pump, closing the water delivery electric valve, opening the water drainage electric valve and the water discharge electric valve for 5-10 minutes, and closing the water drainage electric valve and the water discharge electric valve.
Furthermore, the ammonia gas detector is located 0.9-1.8 m above the liquid ammonia storage tank, a suction inlet of the ammonia gas detector vertically faces the liquid ammonia storage tank, the distance between adjacent spray heads on the same space spray covering device is 0.3-0.8 m, the distance between the upper and lower adjacent space spray covering devices is 0.8-1.5 m, and the distance between the front spray pipe, the left spray pipe, the rear spray pipe and the right spray pipe and the liquid ammonia storage tank in the horizontal direction is 0.5-1.2 m.
Furthermore, the ammonia gas detector is located 1.1-1.6 m above the liquid ammonia storage tank, the distance between adjacent spray heads on the same space spray covering device is 0.4-0.7 m, the distance between the upper and lower adjacent space spray covering devices is 0.9-1.3 m, and the distance between the front spray pipe, the left spray pipe, the rear spray pipe and the right spray pipe and the liquid ammonia storage tank in the horizontal direction is 0.7-1.0 m.
Furthermore, four corners of the plurality of space spraying covering devices are respectively fixedly connected with the support, and the bottom end of the support is fixed on the ground through a flange plate.
Further, the support is made of stainless steel square tubes.
The invention discloses a method for emergency disposal of ammonia leaked from a liquid ammonia storage tank by water spray adsorption, which comprises the following steps: when the ammonia gas detector detects that the concentration of leaked ammonia exceeds the alarm value, all the nozzles spray the periphery of the liquid ammonia storage tank to form coated water mist, so that the liquid ammonia storage tank is wrapped by the completely atomized water mist, the dissolving effect of the leaked ammonia is improved, and the effective disposal of the leaked ammonia is realized. Therefore, the method for emergency disposal of ammonia leaked from the liquid ammonia storage tank through water spray adsorption has the characteristics of high reliability, high response speed and high disposal efficiency, can be quickly linked when ammonia leakage is detected, and can effectively dispose the leaked ammonia and ensure the safety of personnel.
The foregoing is a summary of the present invention, and in order to provide a clear understanding of the technical means of the present invention and to be implemented in accordance with the present specification, the following is a detailed description of the preferred embodiments of the present invention.
The following examples are given to further illustrate the embodiments of the present invention. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Drawings
FIG. 1 is a schematic structural diagram of an emergency system for treating ammonia leakage from a liquid ammonia storage tank by water spray adsorption according to the present invention.
Detailed Description
The invention discloses a method for emergency disposal of ammonia leaked from a liquid ammonia storage tank by water spray adsorption, which comprises the following steps:
A. an emergency system for treating ammonia leakage of a liquid ammonia storage tank by water spray adsorption is arranged on the periphery of the liquid ammonia storage tank, as shown in fig. 1, the emergency system for treating ammonia leakage of the liquid ammonia storage tank by water spray adsorption comprises a water spray water supply pump 6, a water inlet of the water spray water supply pump 6 is communicated with a water source through a water inlet water conveying pipeline, a water outlet of the water spray water supply pump 6 is communicated with a water inlet of a water spray water conveying pipe 3, a filter 5 and a water conveying electric valve 4 are sequentially connected in series on the water spray water conveying pipe 3 from the water inlet end to the water outlet end, a water outlet is arranged on a pipe section between the water inlet end and the filter 5 on the water spray water conveying pipe 3, the water outlet is communicated with a water inlet of a water drain pipe 8; the drain pipe 8 is used for discharging residual water remained in the emergency system to prevent freezing blockage.
The water outlet of the water spray delivery pipe 3 is communicated with the water inlet of the water distribution pipe 10, the water distribution pipe 10 is arranged along the vertical direction, more than 3 water outlets are arranged on the water distribution pipe 10 from top to bottom, each water outlet of the water distribution pipe 10 is respectively communicated with the water inlet of one space spray covering device 1, the bottom end of the water distribution pipe 10 is provided with a water outlet, and the water outlet of the water distribution pipe 10 is provided with a water outlet electric valve 12; the water outlet of the water distribution pipe 10 is used for discharging residual water remained in the emergency system to prevent freezing blockage.
Each space spray covering device 1 comprises a front spray pipe, a left spray pipe, a rear spray pipe and a right spray pipe respectively, the front spray pipe is arranged along the left-right horizontal direction, the left end of the front spray pipe is communicated with the front end of the left spray pipe, the left spray pipe is arranged along the front-rear horizontal direction, the rear end of the left spray pipe is communicated with the left end of the rear spray pipe, the rear spray pipe is arranged along the left-right horizontal direction, the right end of the rear spray pipe is communicated with the rear end of the right spray pipe, the right spray pipe is arranged along the front-rear horizontal direction, the front end of the right spray pipe is communicated with the right end of the front spray pipe, the inward side surfaces of the front spray pipe, the left spray pipe, the rear spray pipe and the right spray pipe are respectively provided with a plurality of spray heads 2, the front spray pipe, the left spray pipe, the rear spray pipe and the right spray pipe of each space spray covering device 1 enclose to form a rectangular frame, a liquid ammonia storage tank 13 is arranged in the middle of the rectangular frame enclosed by the, an ammonia gas detector 9 capable of detecting ammonia gas leakage is arranged above the liquid ammonia storage tank 13;
the plurality of nozzles 2 can spray water mist for coating the liquid ammonia storage tank 13 to the liquid ammonia storage tank 13;
the water delivery electric valve 4, the water spray water supply pump 6, the water discharge electric valve 7, the water discharge electric valve 12 and the ammonia gas detector 9 are connected with an electric control system;
the outer side walls of the water inlet water conveying pipeline, the water spray water conveying pipeline 3, the water conveying electric valve 4, the filter 5, the water distribution pipe 10, the water discharge pipe 8, the water discharge electric valve 7, each front spray pipe, each left spray pipe, each rear spray pipe and each right spray pipe are wrapped with heat insulation materials; the outer side walls of the water inlet water conveying pipeline, the water spray water conveying pipeline 3, the water conveying electric valve 4, the filter 5, the water distribution pipe 10, the water discharge pipe 8, the water discharge electric valve 7, each front spray pipe, each left spray pipe, each rear spray pipe and each right spray pipe are wrapped with heat insulation materials, the interior of the emergency system can be prevented from being frozen, and the emergency system can still work normally in winter.
B. When the ammonia gas detector 9 detects that the leaked ammonia gas concentration reaches the set alarm linkage concentration and the time of the alarm linkage concentration exceeds 1.0 second, the electric control system is linked to open the water delivery electric valve 4 to switch on the water spray water delivery pipe 3, then the electric control system starts the water spray water supply pump 6, the water spray water supply pump 6 sends water to each space spray covering device 1 and all the spray heads 2 on each space spray covering device 1 through the water spray water delivery pipe 3, and the spray heads 2 spray the periphery of the liquid ammonia storage tank 13 to form water spray coating the liquid ammonia storage tank 13 so as to absorb the ammonia gas leaked from the liquid ammonia storage tank 13;
C. and (3) processing the leakage part of the liquid ammonia storage tank 13, after the processing is finished, closing the water spray water supply pump 6, closing the water delivery electric valve 4, opening the water drainage electric valve 7 and the water drainage electric valve for 5-10 minutes, and then closing the water drainage electric valve 7 and the water drainage electric valve 12.
As a further improvement of the invention, the ammonia gas detector 9 is positioned 0.9m to 1.8m above the liquid ammonia storage tank 13, a suction inlet of the ammonia gas detector faces the liquid ammonia storage tank 13 vertically, the distance between adjacent spray heads 2 on the same space spray covering device 1 is 0.3m to 0.8m, the distance between the upper and lower adjacent space spray covering devices 1 is 0.8m to 1.5m, and the distance between the front spray pipe, the left spray pipe, the rear spray pipe and the right spray pipe and the liquid ammonia storage tank in the horizontal direction is 0.5m to 1.2 m.
As a further improvement of the invention, the ammonia gas detector 9 is positioned 1.1m to 1.6m above the liquid ammonia storage tank 13, the distance between adjacent spray heads 2 on the same space spray covering device 1 is 0.4m to 0.7m, the distance between the upper and lower adjacent space spray covering devices 1 is 0.9m to 1.3m, and the distance between the front spray pipe, the left spray pipe, the rear spray pipe and the right spray pipe and the liquid ammonia storage tank in the horizontal direction is 0.7m to 1.0 m.
As a further improvement of the invention, four corners of the plurality of space spray covering devices 1 are fixedly connected with the support 14 respectively, and the bottom end of the support 14 is fixed on the ground through the flange 11.
As a further improvement of the present invention, the bracket 14 is made of a stainless steel square tube.
When the ammonia gas detector 9 detects that the concentration of leaked ammonia exceeds the alarm value, the electric control system is linked to open the water delivery electric valve 4, then the water spray water supply pump 6 is started, the water spray water supply pump 6 sends water to all the nozzles 2 on each space spray covering device 1 through the water spray water delivery pipe 3, the nozzles 2 spray water to the periphery of the liquid ammonia storage tank 13 to form coated water mist, so that the liquid ammonia storage tank 13 is wrapped by the completely atomized water mist, the dissolving effect of leaked ammonia is improved, and the effective disposal of leaked ammonia is realized. Therefore, the method for emergency disposal of ammonia leaked from the liquid ammonia storage tank through water spray adsorption has the characteristics of high reliability, high response speed and high disposal efficiency, can be quickly linked when ammonia leakage is detected, and can effectively dispose the leaked ammonia and ensure the safety of personnel.
According to the invention, the spray heads are densely distributed around the liquid ammonia storage tank to form the coating water mist with pressure, so that leaked ammonia is efficiently dissolved, and the leaked ammonia is prevented from escaping and diffusing. Because the boiling point of ammonia is extremely low, ammonia gas is quickly formed after leakage, and the ammonia gas has stronger toxicity, flammability and explosiveness, the distance between the space spray covering device 1 and the liquid ammonia storage tank 13, the distance between the space spray covering devices 1, the distance between the spray heads 2, the distance between the ammonia gas detector 9 and the liquid ammonia storage tank 13, the ammonia gas alarm concentration and the ammonia gas alarm concentration stabilization time must be strictly restricted, if the distance between the space spray covering devices 1 and the liquid ammonia storage tank 13, the distance between each space spray covering device 1 and the distance between the spray heads 2 are overlarge, complete covering water mist cannot be formed, the diffusion and escape of leaked ammonia are easily caused, if the distance is too small, unnecessary construction cost is increased and a large amount of water resources are wasted, if the distance between the ammonia gas detector 9 and the liquid ammonia storage tank 13 is too large, ammonia leakage cannot be accurately detected at the first time, and the system, the emergency disposal effect is greatly reduced, if the distance is too small, the effective detection range of the ammonia gas detector 9 is too small, ammonia leakage in a reasonable range cannot be detected, if the ammonia gas alarm concentration is set too high or the stabilization time is too long, emergency disposal cannot be started in time, and if the ammonia gas alarm concentration is set too low or the stabilization time is too short, the system can cause frequent misoperation due to electrical drift of equipment. Through a large number of practical tests, the gas detector is located 1.1-1.6 m above the liquid ammonia storage tank 13, the distance between the spray heads is 0.4-0.7 m, the distance between each layer of water spray water supply pipe is 0.7-1.0 m, the stable time when the ammonia gas reaches the alarm concentration is more than 1.0 second, and under the condition, the leaked ammonia in the liquid ammonia storage tank can be comprehensively, quickly and efficiently treated, and a feasible operation scheme is provided for ensuring the safe evacuation of related workers.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, it should be noted that, for those skilled in the art, many modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (4)
1. A method for emergency disposal of ammonia leaked from a liquid ammonia storage tank through water spray adsorption is characterized by comprising the following steps:
A. the emergency system for treating ammonia leakage of the liquid ammonia storage tank through water spray adsorption is arranged on the periphery of the liquid ammonia storage tank, and comprises a water spray water supply pump (6), a water inlet of the water spray water supply pump (6) is communicated with a water source through a water inlet water conveying pipeline, a water outlet of the water spray water supply pump (6) is communicated with a water inlet of a water spray water conveying pipe (3), a filter (5) and a water conveying electric valve (4) are sequentially connected in series from a water inlet end to a water outlet end on the water spray water conveying pipe (3), a water outlet is formed in a pipe section between the water inlet end and the filter (5) on the water spray water conveying pipe (3), the water outlet is communicated with a water inlet of a drain pipe (8), a water discharge electric valve (7) is connected in series in the middle of the drain pipe (8), and a water outlet of the drain pipe (;
the water outlet of the water spray delivery pipe (3) is communicated with the water inlet of the water distribution pipe (10), the water distribution pipe (10) is arranged along the vertical direction, more than 3 water outlets are arranged on the water distribution pipe (10) from top to bottom, each water outlet of the water distribution pipe (10) is respectively communicated with the water inlet of one space spray covering device (1), the bottom end of the water distribution pipe (10) is provided with a water outlet, and the water outlet of the water distribution pipe (10) is provided with a water outlet electric valve (12);
each space spraying covering device (1) comprises a front spray pipe, a left spray pipe, a rear spray pipe and a right spray pipe respectively, the front spray pipe is arranged along the left-right horizontal direction, the left end of the front spray pipe is communicated with the front end of the left spray pipe, the left spray pipe is arranged along the front-rear horizontal direction, the rear end of the left spray pipe is communicated with the left end of the rear spray pipe, the rear spray pipe is arranged along the left-right horizontal direction, the right end of the rear spray pipe is communicated with the rear end of the right spray pipe, the right spray pipe is arranged along the front-rear horizontal direction, the front end of the right spray pipe is communicated with the right end of the front spray pipe, the inward side surfaces of the front spray pipe, the left spray pipe, the rear spray pipe and the right spray pipe are respectively provided with a plurality of spray heads (2), the front spray pipe, the left spray pipe, the rear spray pipe and the right spray pipe of each space spraying covering device (1) enclose, the top space spray covering device (1) is arranged at a position 0.5-1.2 m above the top of the liquid ammonia storage tank (13), and an ammonia gas detector (9) capable of detecting ammonia gas leakage is arranged above the liquid ammonia storage tank (13);
the plurality of nozzles (2) can spray water mist for coating the liquid ammonia storage tank (13) to the liquid ammonia storage tank (13);
the water delivery electric valve (4), the water spray water supply pump (6), the water discharge electric valve (7), the water discharge electric valve (12) and the ammonia gas detector (9) are connected with an electric control system;
the outer side walls of the water inlet water conveying pipeline, the water spray water conveying pipeline (3), the water conveying electric valve (4), the filter (5), the water distribution pipe (10), the water discharge pipe (8), the water discharge electric valve (7), each front spray pipe, each left spray pipe, each rear spray pipe and each right spray pipe are wrapped with heat insulation materials;
B. when the ammonia gas detector (9) detects that the concentration of leaked ammonia gas reaches the set alarm linkage concentration and the time of the alarm linkage concentration exceeds 1.0 second, the electric control system opens the water delivery electric valve (4) in a linkage manner to enable the water spray water delivery pipe (3) to be connected, then the electric control system starts the water spray water supply pump (6), the water spray water supply pump (6) sends water to each space spray covering device (1) and all the spray heads (2) on each space spray covering device (1) through the water spray water delivery pipe (3), and the spray heads (2) spray around the liquid ammonia storage tank (13) to form water spray covering the liquid ammonia storage tank (13) so as to absorb the ammonia gas leaked from the liquid ammonia storage tank (13);
C. treating the leakage part of the liquid ammonia storage tank (13), after treatment, closing the water spray water supply pump (6), closing the water delivery electric valve (4), opening the water drainage electric valve (7) and the water drainage electric valve (12) for 5-10 minutes, and then closing the water drainage electric valve (7) and the water drainage electric valve (12);
four corners of the space spraying covering devices (1) are respectively fixedly connected with the support (14), and the bottom end of the support (14) is fixed on the ground through a flange plate (11).
2. The method of claim 1, wherein the method comprises the following steps: ammonia detector (9) are located liquid ammonia storage tank (13) top 0.9 m-1.8 m department, ammonia detector's sunction inlet is perpendicular towards liquid ammonia storage tank (13), and the interval between adjacent shower nozzle (2) is 0.3 m-0.8 m on same space spraying covering device (1), and the interval between upper and lower adjacent space spraying covering device (1) is 0.8 m-1.5 m, and preceding spray tube, left spray tube, back spray tube and right spray tube are 0.5 m-1.2 m at the interval of horizontal direction and liquid ammonia storage tank.
3. The method of claim 2, wherein the method comprises the following steps: the ammonia gas detector (9) is located 1.1 m-1.6 m above the liquid ammonia storage tank (13), the distance between adjacent spray heads (2) on the same space spray covering device (1) is 0.4 m-0.7 m, the distance between the upper and lower adjacent space spray covering devices (1) is 0.9 m-1.3 m, and the distance between the front spray pipe, the left spray pipe, the rear spray pipe and the right spray pipe and the liquid ammonia storage tank in the horizontal direction is 0.7 m-1.0 m.
4. A method for emergency disposal of leaked ammonia from a liquid ammonia tank by water spray adsorption according to claim 1, 2 or 3, wherein: the support (14) is made of stainless steel square tubes.
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| CN201711406146.6A CN107899363B (en) | 2017-12-22 | 2017-12-22 | Method for emergency disposal of ammonia leaked from liquid ammonia storage tank through water spray adsorption |
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| CN201711406146.6A CN107899363B (en) | 2017-12-22 | 2017-12-22 | Method for emergency disposal of ammonia leaked from liquid ammonia storage tank through water spray adsorption |
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| CN109539809A (en) * | 2018-12-18 | 2019-03-29 | 安徽海螺集团有限责任公司 | The safety system for preventing liquefied ammonia from spreading |
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2017
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104100340A (en) * | 2013-04-09 | 2014-10-15 | 福特环球技术公司 | Enhanced real-time ammonia slip detection |
| CN203463940U (en) * | 2013-09-26 | 2014-03-05 | 山西大唐国际临汾热电有限责任公司 | Liquid ammonia leakage prevention device for denitration in thermal power plant |
| JP2015230053A (en) * | 2014-06-05 | 2015-12-21 | 株式会社Ihi | Ammonia storage facility |
| CN204933221U (en) * | 2015-07-28 | 2016-01-06 | 中国华电工程(集团)有限公司 | A kind of denitrating flue gas treatment system in conjunction with distributed system |
| CN204933229U (en) * | 2015-07-29 | 2016-01-06 | 南通天泽化工有限公司 | Ammonia storage tank overtemperature or leakage automatic spray cooling absorption system device |
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| CN107899363A (en) | 2018-04-13 |
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