CN112999827A - A movable clarification plant that is used for boats and ships trade VOCs unorganized emission to administer - Google Patents
A movable clarification plant that is used for boats and ships trade VOCs unorganized emission to administer Download PDFInfo
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- CN112999827A CN112999827A CN202110272797.0A CN202110272797A CN112999827A CN 112999827 A CN112999827 A CN 112999827A CN 202110272797 A CN202110272797 A CN 202110272797A CN 112999827 A CN112999827 A CN 112999827A
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- desorption
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- 239000012855 volatile organic compound Substances 0.000 title claims description 35
- 238000005352 clarification Methods 0.000 title description 2
- 238000001179 sorption measurement Methods 0.000 claims abstract description 51
- 238000007084 catalytic combustion reaction Methods 0.000 claims abstract description 35
- 239000002808 molecular sieve Substances 0.000 claims abstract description 34
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000002912 waste gas Substances 0.000 claims abstract description 33
- 238000011045 prefiltration Methods 0.000 claims abstract description 28
- 238000000746 purification Methods 0.000 claims abstract description 19
- 230000003197 catalytic effect Effects 0.000 claims abstract description 17
- 238000003795 desorption Methods 0.000 claims description 101
- 238000012544 monitoring process Methods 0.000 claims description 87
- 238000010438 heat treatment Methods 0.000 claims description 25
- 239000007921 spray Substances 0.000 claims description 24
- 238000010790 dilution Methods 0.000 claims description 21
- 239000012895 dilution Substances 0.000 claims description 21
- 230000001105 regulatory effect Effects 0.000 claims description 21
- 239000007789 gas Substances 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 238000001816 cooling Methods 0.000 claims description 13
- 238000013022 venting Methods 0.000 claims description 9
- 238000004880 explosion Methods 0.000 claims description 8
- 125000004122 cyclic group Chemical group 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 6
- 229910021536 Zeolite Inorganic materials 0.000 abstract description 3
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000003647 oxidation Effects 0.000 abstract description 3
- 238000007254 oxidation reaction Methods 0.000 abstract description 3
- 239000010457 zeolite Substances 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 12
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000005202 decontamination Methods 0.000 description 3
- 230000003588 decontaminative effect Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material 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
- B01D53/06—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 with moving adsorbents, e.g. rotating beds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
- B01D46/62—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/07—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases in which combustion takes place in the presence of catalytic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
- B01D2259/40088—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
- B01D2259/4009—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating using hot gas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/45—Gas separation or purification devices adapted for specific applications
- B01D2259/4566—Gas separation or purification devices adapted for specific applications for use in transportation means
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The invention discloses a movable purification device for treating unstructured Volatile Organic Chemicals (VOCs) in the ship industry. The invention realizes the waste gas treatment process of 'multi-stage pre-filtration + zeolite rotating wheel adsorption + catalytic oxidation' through the multi-stage pre-filter, the molecular sieve rotating wheel and the catalytic combustion furnace, and all treatment equipment are integrated in the casing, so the structure is compact, the equipment becomes an integral skid-mounted device, can be integrally hoisted and moved, has the general impact resistance and safe and stable operation, and can also meet the multi-scene use in the ship repairing and manufacturing process, and the one-stop high-efficiency VOCs waste gas purification equipment.
Description
Technical Field
The invention relates to the technical field of waste gas treatment, in particular to a movable purifying device for treating the unorganized emission of VOCs in the ship industry.
Background
Volatile organic compounds (hereinafter referred to as "VOCs") as O3And PM2.5, with recent atmospheric O3And PM2.5 pollution problem is more and more prominent, and the treatment demand is more and more urgent. A large amount of outfield coating operation is required in the ship repairing and manufacturing process, and a large amount of VOCs generated in the operation process not only cause potential harm to field operation personnel, but also seriously pollute the surrounding atmospheric environment. The ship industry external field coating operation VOCs unorganized discharge has the characteristics of large discharge amount, scattered discharge points, intermittent discharge, complex and variable field conditions, high concentration and the like, and fixed equipment is large in size and cannot be moved, so that the treatment requirement of multi-scene complex working conditions cannot be met. At present, most of the volatile organic compounds are not collected and treated, are directly discharged into the atmosphere, have serious pollution and do not meet the requirements of 'volatile organic compound unorganized emission control standard' (GB 37822-2019). At present, a small number of shipyards adopt activated carbon to disperse and adsorb, and a centralized desorption treatment mode of a centralized desorption station is established, but because the coating operation amount of the ship industry is large, the concentration of VOCs waste gas is high, the activated carbon needs to be frequently replaced due to the quick attenuation of the adsorption performance of the activated carbon, the cost is high, the cost for treating the waste activated carbon is high, the carbon is difficult to treat, the carbon is frequently carried and loaded and unloaded, the operation and maintenance labor cost is high, the coating operation efficiency is seriously influenced, the activated carbon has combustion safety hazards and the likeFor the reason, the method cannot be accepted by the market at present and is not popularized and used vigorously.
Disclosure of Invention
The invention aims to provide movable purifying equipment for treating the unorganized emission of VOCs in the ship industry so as to solve the technical problem.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a movable purifying device for ship industry VOCs unorganized emission control comprises a multi-stage prefilter, a molecular sieve rotating wheel, an adsorption fan, a desorption fan, a primary heat exchanger, a secondary heat exchanger, a catalytic combustion furnace, a casing, a fire-fighting spray system and a PLC automatic control system, wherein the multi-stage prefilter, the molecular sieve rotating wheel, the adsorption main fan, the desorption fan, the primary heat exchanger, the secondary heat exchanger and the catalytic combustion furnace are integrally installed in the casing, a waste gas air inlet pipe and a fresh air dilution pipe are arranged on one side of the multi-stage prefilter, an inlet electric valve is arranged at the waste gas air inlet, and a fresh air dilution ratio adjusting valve is arranged at the fresh air dilution port; the molecular sieve rotating wheel is provided with an adsorption area, a cooling area and a desorption area, the catalytic combustion furnace is provided with a heating chamber and a catalytic chamber which are communicated with each other, an air outlet of the multistage prefilter is connected with an inlet of the adsorption area, an outlet of the adsorption area is connected with an inlet of the adsorption fan, an outlet of the cooling area is connected with an inlet of the primary heat exchanger through a first connecting pipeline, an inlet of the desorption area is connected with an outlet of the primary heat exchanger through a second connecting pipeline, the first connecting pipeline is provided with a first desorption proportion regulating valve, the first connecting pipeline is connected with the second connecting pipeline through a pipeline and a second desorption proportion regulating valve, an outlet of the desorption area is connected with an inlet of the desorption fan through a desorption pipeline, and an inlet of the desorption fan is connected with an inlet of the secondary heat exchanger, the first-stage heat exchanger is connected with the second-stage heat exchanger, the outlet of the second-stage heat exchanger is connected with the heating chamber of the catalytic combustion furnace, the catalytic chamber of the catalytic combustion furnace is connected with the inlet of the first-stage heat exchanger, the top of the casing is provided with an equipment outlet, the outlet of the adsorption fan is connected with the equipment outlet through a purified gas pipeline, the outlet of the second-stage heat exchanger is connected with the purified gas pipeline and the equipment outlet, the outlet of the second-stage heat exchanger is also connected with the inlet of the desorption fan through a circulating pipeline, and the circulating pipeline is provided with a circulating heating electric valve; the PLC automatic control system comprises a PLC controller, and the PLC controller is connected with an inlet electric valve, a fresh air dilution ratio adjusting valve, a cyclic heating electric valve, a first desorption ratio adjusting valve, a second desorption ratio adjusting valve and a desorption fresh air ratio adjusting valve.
As a preferred scheme of the invention, the desorption pipeline is sequentially connected with a desorption fresh air proportion adjusting valve and a fresh air filter through pipelines, and the desorption fresh air proportion adjusting valve is connected with the PLC.
In a preferred embodiment of the present invention, the catalytic combustion furnace is provided with an explosion venting device.
As a preferred scheme of the invention, the fire-fighting spray system comprises a fire-fighting water input pipeline, wherein a monitoring node I, a first manual control valve, an automatic control valve, a second manual control valve and a spray pipe are sequentially arranged on the fire-fighting water input pipeline, and a spray head is arranged on the spray pipe; the fire-fighting spraying system is installed on the casing, the fire-fighting water input pipeline is connected with an external fire-fighting water source, the spray header is positioned in the casing, and the automatic control valve is connected with the PLC.
Furthermore, a first emptying pipe is arranged on a pipeline in front of the first manual control valve, a second emptying pipe is arranged on a pipeline between the second manual control valve and the spray pipe, the first emptying pipe is communicated with the second emptying pipe, a third manual control valve is arranged on the first emptying pipe, and a fourth manual control valve is arranged on the second emptying pipe.
As a preferable scheme of the invention, monitoring nodes II are arranged on the multistage prefilter, the adsorption area and the cooling area of the molecular sieve rotating wheel, and each monitoring node II comprises a pressure difference sensor, an indicator and an alarm and is used for monitoring the pressure difference between the connected areas in real time.
As a preferred scheme of the present invention, a monitoring node iii is disposed on the multistage prefilter and the first connecting pipe, a monitoring node iii is disposed on a pipe connecting the secondary heat exchanger and the heating chamber, a monitoring node iii is disposed on a pipe connecting the secondary heat exchanger and the primary heat exchanger, a monitoring node iii is disposed on a pipe connecting an upper end outlet of the secondary heat exchanger, a monitoring node iii is disposed on a pipe between an outlet of the adsorption region and an inlet of the adsorption fan, the monitoring node iii is connected to the PLC controller, and the monitoring node iii includes a temperature sensor, an indicator and an alarm for monitoring temperature.
As a preferred scheme of the invention, a monitoring node IV is arranged on a pipeline between the fresh air dilution ratio regulating valve and the multistage prefilter, and the monitoring node IV comprises a pressure sensor, an indicator, a controller and an alarm and is used for monitoring the temperature.
As a preferred scheme of the invention, a monitoring node V is arranged at an inlet of the desorption region, the monitoring node V comprises a temperature sensor, an indicator, a controller and an alarm, and the controller of the monitoring node V is in control connection with the first desorption proportion regulating valve and the second desorption proportion regulating valve.
As a preferable scheme of the invention, motors in the molecular sieve rotating wheel, the adsorption fan and the desorption fan are variable frequency motors, monitoring nodes VI are arranged on the molecular sieve rotating wheel, the adsorption fan and the desorption fan, each monitoring node VI comprises a frequency sensor and an indicator, and the frequency monitoring nodes VI are connected with the PLC.
Compared with the prior art, the invention has the beneficial effects that:
the invention realizes the waste gas treatment process of 'multi-stage pre-filtration + zeolite rotating wheel adsorption + catalytic oxidation' through the multi-stage pre-filter, the molecular sieve rotating wheel and the catalytic combustion furnace, and all treatment equipment are integrated in the casing, so the structure is compact, the equipment becomes an integral skid-mounted device, can be integrally hoisted and moved, has the general impact resistance and safe and stable operation, and can also meet the multi-scene use in the ship repairing and manufacturing process, and the one-stop high-efficiency VOCs waste gas purification equipment.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic process diagram of a mobile purification device for the treatment of the unorganized emission of VOCs from the ship industry according to the present invention;
FIG. 2 is a schematic diagram of a fire protection system provided by the present invention;
FIG. 3 is a perspective view of the mobile purification apparatus for the treatment of the unorganized emission of VOCs from the marine industry according to the present invention;
FIG. 4 is a rear view of the mobile decontamination apparatus of the present invention for the treatment of marine industry VOCs inorganized emissions;
FIG. 5 is a cross-sectional view taken along line A-A of the mobile decontamination apparatus of the present invention for the treatment of the unorganized emissions of VOCs from the marine industry;
FIG. 6 is a sectional view taken along line B-B of the mobile purification apparatus for the treatment of the unorganized emission of VOCs from the marine industry according to the present invention;
FIG. 7 is a right side view of the mobile decontamination apparatus of the present invention for the treatment of marine industry VOCs inorganized emissions;
fig. 8 is a top view of the mobile purification apparatus for marine industry unstructured emission abatement of VOCs provided by the present invention.
In the figure, 1-a multi-stage prefilter, 2-a molecular sieve rotating wheel, 3-an adsorption fan, 4-a desorption fan, 5-a primary heat exchanger, 6-a secondary heat exchanger, 7-a catalytic combustion furnace, 8-a machine shell, 9-a fire-fighting spray system, 10-a waste gas inlet, 11-a fresh air dilution port, 12-an inlet electric valve, 13-a fresh air dilution ratio adjusting valve, 14-an adsorption area, 15-a cooling area, 16-a desorption area, 17-a heating chamber, 18-a catalytic chamber, 19-a purified gas pipeline, 20-an equipment outlet, 21-a circulating pipeline, 22-a circulating heating electric valve, 23-a first connecting pipeline, 24-a second connecting pipeline, 25-a first desorption ratio adjusting valve, 26-a second desorption ratio adjusting valve, 27-desorption pipeline, 28-desorption fresh air proportion regulating valve, 29-fresh air filter, 30-explosion venting device, 31-fire water input pipeline, 32-monitoring nodes I, 33-first emptying pipe, 34-second emptying pipe, 35-first manual control valve, 36-automatic control valve, 37-second manual control valve, 38-third manual control valve, 39-fourth manual control valve, 40-PLC automatic control system, 41-monitoring nodes II, 42-monitoring nodes III, 43-monitoring nodes IV, 44-monitoring nodes V, 45-monitoring nodes VI.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1 to 8, the movable purification equipment for the treatment of the unorganized emission of VOCs in the ship industry provided by the invention comprises a multistage prefilter 1, a molecular sieve rotating wheel 2, an adsorption fan 3, a desorption fan 4, a primary heat exchanger 5, a secondary heat exchanger 6, a catalytic combustion furnace 7, a housing 8, a fire-fighting spray system 9 and a PLC automatic control system, wherein the multistage prefilter 1, the molecular sieve rotating wheel 2, the adsorption main fan 3, the desorption fan 4, the primary heat exchanger 5, the secondary heat exchanger 6 and the catalytic combustion furnace 7 are integrally installed in the housing 8, one side of the multistage prefilter 1 is provided with a waste gas inlet pipe 10 and a fresh air dilution pipe 11, the waste gas inlet 10 is provided with an inlet electric valve 12, and the fresh air dilution port 11 is provided with a fresh air dilution ratio; an adsorption area 14, a cooling area 15 and a desorption area 16 are arranged on the molecular sieve rotating wheel 4, a heating chamber 17 and a catalytic chamber 18 which are communicated with each other are arranged on the catalytic combustion furnace 7, an air outlet of the multi-stage prefilter 1 is connected with an inlet of the adsorption area 14, an outlet of the adsorption area 14 is connected with an inlet of the adsorption fan 3, an outlet of the cooling area 15 is connected with an inlet of the first-stage heat exchanger 5 through a first connecting pipeline 23, an inlet of the desorption area 16 is connected with an outlet of the first-stage heat exchanger 5 through a second connecting pipeline 24, a first desorption proportion regulating valve 25 is arranged on the first connecting pipeline 23, the first connecting pipeline 23 is connected with the second connecting pipeline 24 through a pipeline and a second desorption proportion regulating valve 26, an outlet of the desorption area 16 is connected with an inlet of the desorption fan 4 through a desorption pipeline 27, an inlet of the desorption fan 4 is connected with an inlet of the second-stage heat, the outlet of the secondary heat exchanger 6 is connected with the heating chamber 17 of the catalytic combustion furnace 7, the catalytic chamber 18 of the catalytic combustion furnace 7 is connected with the inlet of the primary heat exchanger 5, the top of the casing 8 is provided with an equipment outlet 20, the outlet of the adsorption fan 3 is connected with the equipment outlet 20 through a purified gas pipeline 19, the outlet of the secondary heat exchanger 6 is connected with the purified gas pipeline 19 and the equipment outlet 20, the outlet of the secondary heat exchanger is also connected with the inlet of the desorption fan 4 through a circulating pipeline 21, and the circulating pipeline 21 is provided with a circulating heating electric valve 22; the PLC automatic control system 40 comprises a PLC controller, and the PLC controller is connected with the inlet electric valve 12, the fresh air dilution ratio adjusting valve 13, the cyclic heating electric valve 22, the first desorption ratio adjusting valve 25, the second desorption ratio adjusting valve 26 and the desorption fresh air ratio adjusting valve 28.
Specifically, the adsorption zone 14 occupies 5/6 of the whole area of the molecular sieve rotating wheel 2, the organic gas is adsorbed in the honeycomb zeolite, and the clean gas is discharged; the desorption zone 16 occupies the area of the runner 1/12, and is heated at a high temperature to volatilize the VOC in the gas at the high temperature; the cooling zone 15 occupies a region of the runner 1/12, and cools the normal temperature exhaust gas through the high temperature region that is turned over.
Specifically, the desorption pipeline 27 is sequentially connected with a desorption fresh air proportion adjusting valve 28 and a fresh air filter 29 through pipelines, and the desorption fresh air proportion adjusting valve 28 is connected with the PLC controller.
Specifically, the catalytic combustion furnace 7 is provided with an explosion venting device 30, the explosion venting device 30 is accommodated in the top opening of the casing 8, and the explosion venting device 30 is used for automatically breaking the explosion venting device 30 when the pressure in the catalytic combustion furnace 7 exceeds 0.05MPa, and venting high-temperature and high-pressure gas in the catalytic combustion furnace 7 to prevent high-pressure impact from damaging equipment.
Specifically, the fire fighting spray system 9 comprises a fire fighting water input pipeline 31, a monitoring node I32, a first manual control valve 35, an automatic control valve 36, a second manual control valve 37 and a spray pipe are sequentially arranged on the fire fighting water input pipeline 31, a spray head is arranged on the spray pipe, a first emptying pipe 33 is arranged on the pipeline between the monitoring node I32 and the first manual control valve 35, a second emptying pipe 34 is arranged on the pipeline between the second manual control valve 37 and the spray pipe, the first emptying pipe 33 is communicated with the second emptying pipe 34, a third manual control valve 38 is arranged on the first emptying pipe 33, and a fourth manual control valve 39 is arranged on the second emptying pipe 34. The fire-fighting spray system 9 is installed on the machine shell 8, the fire-fighting water input pipeline 31 is connected with an external fire-fighting water source, and the spray header is used for the molecular sieve rotating wheel 2 in the machine shell 8. The monitoring node I32 comprises a pressure sensor, an indicator and an alarm, and is used for monitoring the pressure in the waterproof input pipeline 31 in real time, and the automatic control valve 36 and the monitoring node I32 are connected with the PLC.
Specifically, monitoring nodes II 41 are arranged on the adsorption area 14 and the cooling area 15 of the multistage prefilter 1 and the molecular sieve rotating wheel 2, and the monitoring nodes II 41 comprise a pressure difference sensor, an indicator and an alarm device and are used for monitoring the pressure difference between the connected areas in real time.
Specifically, multistage prefilter 1, be provided with monitoring node III 42 on the first connecting tube 23, be provided with monitoring node III 42 on the pipeline that second grade heat exchanger 6 and heating chamber 17 link to each other, be provided with monitoring node III 42 on the pipeline that second grade heat exchanger 6 and one-level heat exchanger 5 link to each other, be provided with monitoring node III 42 on the pipeline that links to each other with the upper end export of second grade heat exchanger 6, be provided with monitoring node III 42 on the pipeline between the export of adsorption zone 14 and adsorption fan 3's the entry, monitoring node III 42 is connected with the PLC controller, monitoring node III 42 includes temperature sensor, indicator and alarm, be used for implementing the monitoring to the temperature.
Specifically, a monitoring node IV 43 is arranged on a pipeline between the fresh air dilution proportion regulating valve 13 and the multistage prefilter 1, and the monitoring node IV 43 comprises a pressure sensor, an indicator, a controller and an alarm and is used for monitoring the temperature.
Specifically, be provided with monitoring node V44 on the catalytic chamber 18, monitoring node V44 includes temperature sensor, indicator, controller and alarm for implement the monitoring to the temperature, monitoring node V44's controller and desorption new trend proportion control valve 28 control connection, monitoring node V44 is connected with the PLC controller.
Specifically, be provided with monitoring node V44 on the pipeline of being close to the entry of desorption district 16, monitoring node V44 includes temperature sensor, indicator, controller and alarm, and monitoring node V44's controller and first desorption ratio control valve 25 and second desorption ratio control valve 26 control connection.
Concretely, the motors of the molecular sieve rotating wheel 2, the adsorption fan 3 and the desorption fan 4 are variable frequency motors, monitoring nodes VI 45 are respectively arranged on the molecular sieve rotating wheel 2, the adsorption fan 3 and the desorption fan 4, each monitoring node VI 45 comprises a frequency sensor and an indicator, and each monitoring node VI 45 is connected with the PLC. And the controller of the monitoring node IV 43 is connected with a monitoring node VI 45 on the adsorption fan 3.
In the figure, 1-a multi-stage prefilter, 2-a molecular sieve rotating wheel, 3-an adsorption fan, 4-a desorption fan, 5-a primary heat exchanger, 6-a secondary heat exchanger, 7-a catalytic combustion furnace, 8-a machine shell, 9-a fire-fighting spray system, 10-a waste gas inlet, 11-a fresh air dilution port, 12-an inlet electric valve, 13-a fresh air dilution ratio adjusting valve, 14-an adsorption area, 15-a cooling area, 16-a desorption area, 17-a heating chamber, 18-a catalytic chamber, 19-a purified gas pipeline, 20-an equipment outlet, 21-a circulating pipeline, 22-a circulating heating electric valve, 23-a first connecting pipeline, 24-a second connecting pipeline, 25-a first desorption ratio adjusting valve, 26-a second desorption ratio adjusting valve, 27-desorption pipeline, 28-desorption fresh air proportion regulating valve, 29-fresh air filter, 30-explosion venting device, 31-fire water input pipeline, 32-monitoring nodes I, 33-first emptying pipe, 34-second emptying pipe, 35-first manual control valve, 36-automatic control valve, 37-second manual control valve, 38-third manual control valve, 39-fourth manual control valve, 40-PLC automatic control system, 41-monitoring nodes II, 42-monitoring nodes III, 43-monitoring nodes IV, 44-monitoring nodes V, 45-monitoring nodes VI.
The working process of the movable purifying equipment for the unorganized emission control of VOCs in the ship industry provided by the invention is as follows:
opening a desorption fan 4 and a catalytic combustion furnace 7, simultaneously opening a desorption fresh air proportion adjusting valve 28 and a cyclic heating electric valve 22, preheating the catalytic combustion furnace 7, when the temperature in a catalytic chamber 18 of the catalytic combustion furnace 7 reaches a preset range (for example, the temperature is stabilized at 250-270 ℃), starting a motor of a molecular sieve rotating wheel 1, closing the desorption fresh air proportion adjusting valve 28 and the cyclic heating electric valve 22, preheating the molecular sieve rotating wheel 1, when the temperatures at an inlet of a desorption area 16 and a heating chamber 17 of the catalytic combustion furnace 7 reach the preset range (for example, 260-280 ℃), opening an inlet electric valve 12 and an adsorption fan 3, formally introducing waste gas into equipment, allowing the waste gas to flow through a multi-stage prefilter 1, filtering out particles in the waste gas, allowing the waste gas to enter an adsorption area 14 of the molecular sieve rotating wheel 1, and discharging the gas after adsorption and purification through the adsorption fan 3 and, in the adsorption colleague, a small part of waste gas is extracted to pass through the cooling zone 1, the molecular sieve rotating wheel 2 is cooled and cooled, the waste gas is further heated to a preset range (for example, 180-220 ℃) through the primary heat exchanger 5, then the waste gas is sent into the desorption zone 16 of the molecular sieve rotating wheel 2, the waste gas adsorbed on the molecular sieve rotating wheel 2 is desorbed by hot gas flow, the desorbed waste gas is sent to the secondary heat exchanger 6 through the desorption fan 4 to be preheated, then the waste gas enters the heating chamber 17 of the catalytic combustion furnace 7, the waste gas is heated to a preset temperature (300-350 ℃) and then enters the catalytic chamber 18, the waste gas heated under the catalytic action of the catalyst in the catalytic chamber 18 and under the high-temperature condition is decomposed into carbon dioxide and water, and the gas after catalytic purification is subjected to heat recovery through the primary heat exchanger 5 and the secondary heat exchanger 6. And after the waste gas treatment is finished, starting a shutdown program, opening a fresh air dilution ratio regulating valve 13, closing an inlet electric valve 12, performing air separation on the molecular sieve rotating wheel 2 and the catalytic combustion furnace 7, and when the air separation reaches a set time, closing an electric heater of the catalytic combustion furnace 7 until the temperature of the inlet airflow of the desorption area 16 is lower than a preset temperature (for example, 80-100 ℃) and the temperature in the heating chamber 17 is lower than a preset temperature (for example, 200-220 ℃), closing the motors of the adsorption fan 3, the desorption fan 4 and the molecular sieve rotating wheel 2, and at this moment, completing the shutdown of the equipment.
When the inlet temperature of the desorption zone 16 of the molecular sieve rotating wheel 2 exceeds a preset range (for example, 240-260 ℃) or the outlet temperature of the desorption zone 16 exceeds a preset range (for example, 180-200 ℃), the fire-fighting spraying system is automatically started to cool the rotating wheel, and the situation that VOCs adsorbed on the rotating wheel are smoldered to damage the molecular sieve rotating wheel 2 is prevented.
In the technical scheme of the invention, the fresh air dilution proportion regulating valve 13 is used for regulating the concentration of the entering waste gas, and when the concentration of the waste gas entering the equipment is too high, the temperature in the catalytic combustion furnace 7 exceeds a preset range (for example, 580-600 ℃), the valve is automatically opened to dilute the inlet waste gas. The first desorption proportion regulating valve 25 is matched with the second desorption proportion regulating valve 26, when the inlet temperature of the desorption area 16 is too high, the opening degree of the first desorption proportion regulating valve 25 is increased, the opening degree of the second desorption proportion regulating valve 26 is reduced, and vice versa, the inlet gas temperature of the desorption area 16 is ensured to be within a preset range (for example, 180-220 ℃). The electric circulating heating valve 22 is used for preheating the catalytic combustion furnace 7 when the equipment is started, so that the preheated waste gas enters the catalytic combustion furnace 7 again through the secondary heat exchanger 6 through the desorption air 4, and the preheating time and the energy consumption of the equipment are reduced. The desorption fresh air proportion adjusting valve 28 is used for opening the desorption fresh air proportion adjusting valve 28 when the temperature in the catalytic oxidation furnace 7 exceeds a preset range (for example, exceeds 580-600 ℃) due to the overhigh concentration of the desorbed waste gas VOCs, introducing fresh air to dilute the desorbed high-concentration waste gas, and automatically adjusting the opening and closing angle of the valve according to the real-time temperature in the catalytic combustion furnace 7.
The temperature in the equipment is monitored through each monitoring node, and the actions in the equipment are automatically controlled and completed by an equipment PLC control system.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.
Claims (10)
1. A movable purifying device for treating the unorganized emission of VOCs in the ship industry is characterized by comprising a multi-stage prefilter, a molecular sieve rotating wheel, an adsorption fan, a desorption fan, a primary heat exchanger, a secondary heat exchanger, a catalytic combustion furnace, a shell, a fire-fighting spray system and a PLC automatic control system, wherein the multi-stage prefilter, the molecular sieve rotating wheel, the adsorption main fan, the desorption fan, the primary heat exchanger, the secondary heat exchanger and the catalytic combustion furnace are integrally installed in the shell, a waste gas air inlet pipe and a fresh air dilution pipe are arranged on one side of the multi-stage prefilter, an inlet electric valve is arranged at the waste gas air inlet, and a fresh air dilution ratio adjusting valve is arranged at the fresh air dilution port; the molecular sieve rotating wheel is provided with an adsorption area, a cooling area and a desorption area, the catalytic combustion furnace is provided with a heating chamber and a catalytic chamber which are communicated with each other, an air outlet of the multistage prefilter is connected with an inlet of the adsorption area, an outlet of the adsorption area is connected with an inlet of the adsorption fan, an outlet of the cooling area is connected with an inlet of the primary heat exchanger through a first connecting pipeline, an inlet of the desorption area is connected with an outlet of the primary heat exchanger through a second connecting pipeline, the first connecting pipeline is provided with a first desorption proportion regulating valve, the first connecting pipeline is connected with the second connecting pipeline through a pipeline and a second desorption proportion regulating valve, an outlet of the desorption area is connected with an inlet of the desorption fan through a desorption pipeline, and an inlet of the desorption fan is connected with an inlet of the secondary heat exchanger, the first-stage heat exchanger is connected with the second-stage heat exchanger, the outlet of the second-stage heat exchanger is connected with the heating chamber of the catalytic combustion furnace, the catalytic chamber of the catalytic combustion furnace is connected with the inlet of the first-stage heat exchanger, the top of the casing is provided with an equipment outlet, the outlet of the adsorption fan is connected with the equipment outlet through a purified gas pipeline, the outlet of the second-stage heat exchanger is connected with the purified gas pipeline and the equipment outlet, the outlet of the second-stage heat exchanger is also connected with the inlet of the desorption fan through a circulating pipeline, and the circulating pipeline is provided with a circulating heating electric valve; the PLC automatic control system comprises a PLC controller, and the PLC controller is connected with an inlet electric valve, a fresh air dilution ratio adjusting valve, a cyclic heating electric valve, a first desorption ratio adjusting valve, a second desorption ratio adjusting valve and a desorption fresh air ratio adjusting valve.
2. The movable purification equipment for marine industrial VOCs unorganized emission abatement according to claim 1, wherein the desorption pipeline is sequentially connected with a desorption fresh air proportion adjusting valve and a fresh air filter through a pipeline, and the desorption fresh air proportion adjusting valve is connected with a PLC (programmable logic controller).
3. The mobile purification apparatus for marine industry unstructured emission abatement of VOCs according to claim 1, wherein the catalytic combustion furnace is provided with an explosion venting device.
4. The movable purification equipment for ship industry VOCs unorganized emission abatement of claim 1, wherein the fire-fighting spray system comprises a fire-fighting water input pipeline, the fire-fighting water input pipeline is sequentially provided with a monitoring node I, a first manual control valve, an automatic control valve, a second manual control valve and a spray pipe, and the spray pipe is provided with a spray head; the fire-fighting spraying system is installed on the casing, the fire-fighting water input pipeline is connected with an external fire-fighting water source, the spray header is positioned in the casing, and the automatic control valve is connected with the PLC.
5. The movable purification equipment for marine industry VOCs inorganization emission abatement according to claim 4, wherein a first evacuation pipe is arranged on the pipeline before the first manual control valve, a second evacuation pipe is arranged on the pipeline between the second manual control valve and the spray pipe, the first evacuation pipe is communicated with the second evacuation pipe, a third manual control valve is arranged on the first evacuation pipe, and a fourth manual control valve is arranged on the second evacuation pipe.
6. The movable purification equipment for ship industry VOCs unorganized emission control of claim 1, wherein monitoring nodes II are arranged on the multistage prefilter, the adsorption zone and the cooling zone of the molecular sieve rotating wheel, and each monitoring node II comprises a pressure difference sensor, an indicator and an alarm, and is used for monitoring the pressure difference between the connected areas in real time.
7. The movable purification equipment for ship industry VOCs unorganized emission control according to claim 1, wherein a monitoring node III is arranged on the multistage prefilter and the first connecting pipeline, a monitoring node III is arranged on the pipeline connecting the secondary heat exchanger with the heating chamber, a monitoring node III is arranged on the pipeline connecting the secondary heat exchanger with the primary heat exchanger, a monitoring node III is arranged on the pipeline connecting the upper end outlet of the secondary heat exchanger, a monitoring node III is arranged on the pipeline between the outlet of the adsorption area and the inlet of the adsorption fan, the monitoring node III is connected with the PLC, and the monitoring node III comprises a temperature sensor, an indicator and an alarm for monitoring the temperature.
8. The movable purification equipment for ship industry VOCs unorganized emission control according to claim 1, wherein a monitoring node IV is arranged on a pipeline between the fresh air dilution proportion adjusting valve and the multistage pre-filter, and the monitoring node IV comprises a pressure sensor, an indicator, a controller and an alarm and is used for monitoring temperature.
9. The movable purification equipment for ship industry VOCs unorganized emission control of claim 1, wherein a monitoring node V is arranged at an inlet of the desorption area, the monitoring node V comprises a temperature sensor, an indicator, a controller and an alarm, and the controller of the monitoring node V is in control connection with the first desorption proportion regulating valve and the second desorption proportion regulating valve.
10. The movable purification equipment for the treatment of the disorganized emission of VOCs in the marine industry according to claim 1, wherein motors in the molecular sieve rotating wheel, the adsorption fan and the desorption fan are all variable frequency motors, monitoring nodes VI are arranged on the molecular sieve rotating wheel, the adsorption fan and the desorption fan, each monitoring node VI comprises a frequency sensor and an indicator, and each frequency monitoring node VI is connected with the PLC.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110272797.0A CN112999827A (en) | 2021-03-13 | 2021-03-13 | A movable clarification plant that is used for boats and ships trade VOCs unorganized emission to administer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110272797.0A CN112999827A (en) | 2021-03-13 | 2021-03-13 | A movable clarification plant that is used for boats and ships trade VOCs unorganized emission to administer |
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| CN112999827A true CN112999827A (en) | 2021-06-22 |
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| CN202110272797.0A Pending CN112999827A (en) | 2021-03-13 | 2021-03-13 | A movable clarification plant that is used for boats and ships trade VOCs unorganized emission to administer |
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| CN210125274U (en) * | 2019-02-18 | 2020-03-06 | 青岛华世洁环保科技有限公司 | Molecular sieve rotating wheel module for waste gas purification equipment and integrated waste gas purification equipment |
| CN111457405A (en) * | 2020-05-19 | 2020-07-28 | 安徽江淮汽车集团股份有限公司 | Exhaust gas treatment system |
| CN111482052A (en) * | 2020-05-22 | 2020-08-04 | 上海兰宝环保科技有限公司 | Module combined type VOC waste gas purification equipment and waste gas purification method |
| CN212167053U (en) * | 2020-01-21 | 2020-12-18 | 浙江安可环保科技有限公司 | Processing system for spraying organic waste gas |
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2021
- 2021-03-13 CN CN202110272797.0A patent/CN112999827A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106731483A (en) * | 2017-03-21 | 2017-05-31 | 上海兰宝环保科技有限公司 | It is suitable for the exhaust treatment system of high humility organic exhaust gas |
| CN210125274U (en) * | 2019-02-18 | 2020-03-06 | 青岛华世洁环保科技有限公司 | Molecular sieve rotating wheel module for waste gas purification equipment and integrated waste gas purification equipment |
| CN212167053U (en) * | 2020-01-21 | 2020-12-18 | 浙江安可环保科技有限公司 | Processing system for spraying organic waste gas |
| CN111457405A (en) * | 2020-05-19 | 2020-07-28 | 安徽江淮汽车集团股份有限公司 | Exhaust gas treatment system |
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Application publication date: 20210622 |
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