CN212389410U - On-line regeneration off-line deashing ship tail gas treatment system - Google Patents
On-line regeneration off-line deashing ship tail gas treatment system Download PDFInfo
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- CN212389410U CN212389410U CN202021411849.5U CN202021411849U CN212389410U CN 212389410 U CN212389410 U CN 212389410U CN 202021411849 U CN202021411849 U CN 202021411849U CN 212389410 U CN212389410 U CN 212389410U
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- 238000011282 treatment Methods 0.000 title claims abstract description 31
- 238000011069 regeneration method Methods 0.000 title claims abstract description 20
- 230000008929 regeneration Effects 0.000 title claims abstract description 19
- 239000013618 particulate matter Substances 0.000 claims abstract description 31
- 239000003054 catalyst Substances 0.000 claims abstract description 12
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 7
- 239000002245 particle Substances 0.000 claims description 8
- 238000011284 combination treatment Methods 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 239000003344 environmental pollutant Substances 0.000 abstract description 4
- 231100000719 pollutant Toxicity 0.000 abstract description 4
- 239000002131 composite material Substances 0.000 abstract description 2
- 238000005507 spraying Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 43
- 238000000034 method Methods 0.000 description 6
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- Exhaust Gas After Treatment (AREA)
Abstract
The utility model relates to an online regeneration off-line deashing ship tail gas treatment system, which comprises an inlet valve, an air throttle, a combustible gas and particulate matter treatment combination device, an outlet valve, a reducing agent metering and spraying device, an SCR device, a compressed air valve and a filter; an inlet valve and an outlet valve are respectively arranged on an inlet main pipe and an outlet main pipe of the combustible gas and particulate matter treatment combined device; the combustible gas and particulate matter treatment combined device is composed of a plurality of combined device units, wherein each combined device unit is sequentially provided with an electric heater, a DOC catalyst and a DPF catalyst from bottom to top, a differential pressure transmitter is arranged on the body of each combined device unit, and a temperature switch is arranged at the outlet of each combined device unit. The utility model has the advantages that: the utility model discloses a combustible gas and particulate matter processing composite set, compressed air valve and particulate matter filter realize the purpose of online regeneration and off-line deashing, get rid of gaseous state and solid-state pollutant in the tail gas, and the energy consumption is low, and the regeneration is convenient.
Description
Technical Field
The patent relates to the technical field of ship tail gas treatment, in particular to a renewable ship tail gas treatment system.
Background
The tail gas emission of ships is one of the main sources of air pollution in port cities and inland river areas, and along with the development of shipping industry, the tail gas emission of ships seriously affects the air quality and brings great negative effects on the environment and human health, so that the control of the tail gas pollutant emission of ships is urgent.
DPF + SCR + DOC is a commonly used ship tail gas comprehensive treatment system at present. However, the oil products burned by the ship engine are poor, the particulate matters and sulfur dioxide in the tail gas are high, the performances of the DOC catalyst and the DPF catalyst are seriously influenced, the regeneration needs to be carried out regularly, and the non-combustible particulate matters need to be cleaned regularly. Conventionally, active regeneration systems that burn collected particulates by increasing the temperature of the flue gas through an external environment are currently the more prevalent regeneration method. Generally, DPF adopts oil injection combustion regeneration, the system is complex in the method, fuel oil needs to be consumed continuously, the requirements on the atomization effect and the arrangement condition of oil injection are extremely high, and uniform injection is difficult for a large-flow tail gas treatment system. Meanwhile, the cleaning of incombustible particulate matters needs to be carried out by dismantling and returning to a factory for ash removal. Seriously affecting the continuous operation of the ship.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming not enough among the prior art, provide an online regeneration off-line deashing boats and ships tail gas processing system, this boats and ships tail gas processing system can the integrated processing ship engine's tail gas to realize the online regeneration of DPF device and not increase a large amount of energy consumptions at system operation in-process, prolong boats and ships tail gas processing system's life, can clear up incombustible particulate matter fast simultaneously, guarantee the continuous operation of boats and ships.
The online regeneration offline ash removal ship tail gas treatment system comprises an inlet valve, an air throttle, a combustible gas and particulate matter treatment combined device, an outlet valve, a reducing agent metering and spraying device, an SCR device, a compressed air valve and a filter; an inlet valve and an outlet valve are respectively arranged on an inlet main pipe and an outlet main pipe of the combustible gas and particulate matter treatment combined device; the combustible gas and particulate matter treatment combined device consists of a plurality of combined device units, wherein each combined device unit is sequentially provided with an electric heater, a DOC catalyst and a DPF catalyst from bottom to top; an air throttle is arranged at the inlet of each combined device unit, when the air throttle is inserted, a certain amount of tail gas enters the combined device unit and is heated under the action of an electric heater, and the heating temperature is 500-600 ℃; the particle filter is arranged in parallel on the combustible gas and particle treatment combination device; a compressed air valve is arranged on an outlet main pipe of the combustible gas and particulate matter treatment combined device and used for conveying compressed air to the combined device unit during ash removal so as to ensure the ash removal effect; the outlet valve outlet is connected with the SCR device inlet, and the SCR device outlet is communicated with the outside air.
Preferably, the method comprises the following steps: the throttle valve plate of the throttle valve is opened according to the differential pressure of the adjacent combined device units, and the opening rate is kept between 5 and 25 percent.
Preferably, the method comprises the following steps: and the inlet and the outlet of the particulate filter are respectively provided with a filter inlet valve and a filter outlet valve, and the filter inlet valve and the filter outlet valve are opened under the ash cleaning working condition, so that the incombustible particles cleaned by the compressed air are removed in the particulate filter.
Preferably, the method comprises the following steps: the outlet valve is located at the rear end of the compressed air valve.
The utility model has the advantages that: the utility model discloses a combustible gas and particulate matter processing composite set, compressed air valve and particulate matter filter realize the purpose of online regeneration and off-line deashing, get rid of gaseous state and solid-state pollutant in the tail gas, and the energy consumption is low, and the regeneration is convenient.
Drawings
FIG. 1 is a schematic diagram of a process system and implementation of the present patent;
FIG. 2 is a schematic view of the throttle plate structure opening of the present patent;
FIG. 3 is a schematic view of the combined combustible gas and particulate matter treatment apparatus of this patent.
Description of reference numerals: 1-inlet valve, 2-air throttle, 21-air throttle valve plate, 3-combustible gas and particulate matter treatment combined device, 31-electric heater, 32-DOC catalyst, 33-DPF catalyst, 34-differential pressure transmitter, 35-temperature switch, 4-outlet valve, 5-reducing agent metering injection device, 6-SCR device, 7-compressed air valve, 8-filter inlet valve, 9-particulate matter filter and 10-filter outlet valve.
Detailed Description
The present invention will be further described with reference to the following examples. The following description of the embodiments is merely provided to aid in understanding the invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
As an embodiment, the patent provides an online regeneration offline ash removal ship tail gas treatment system, which comprises an inlet valve 1, a throttle valve 2, a combustible gas and particulate matter treatment combined device 3, an outlet valve 4, a reducing agent metering and injecting device 5, an SCR device 6, a compressed air valve 7, a filter inlet valve 8, a particulate matter filter 9, a filter outlet valve 10 and the like.
The combustible gas and particulate matter treatment combined device 3 is composed of a plurality of combined device units, each combined device unit is sequentially provided with an electric heater 31, a DOC catalyst 32 and a DPF catalyst 33 from bottom to top, a differential pressure transmitter 34 is arranged on the body of each combined device unit, and a temperature switch 35 is arranged at the outlet of each combined device unit. Under the normal operation working condition, after the tail gas comes out of the engine, the tail gas is uniformly introduced into the combustible gas and particulate matter treatment combination device 3 through the inlet valve 1, combustible gas and particulate matter in the flue gas are removed, then the tail gas enters the SCR device 6 after the reducing agent is injected through the reducing agent metering and injecting device 5, nitrogen oxide in the tail gas is removed, and finally the tail gas is discharged into the atmosphere.
A damper 2 is provided at the inlet of each combination unit. The throttle valve plate 21 is perforated according to the differential pressure of the adjacent combination unit, and the opening rate is kept at 5% -25%. When the differential pressure of one combination device unit of the combustible gas and particulate matter treatment combination device 3 rises to a high value, the corresponding air throttle 2 is inserted, so that a certain amount of tail gas enters the combination device unit, and meanwhile, the electric heater 31 is started, the temperature of the tail gas rises to 500-600 ℃, so that the combustible gas and particulate matter treatment combination device 3 is regenerated.
And a compressed air valve 7 is arranged on an outlet main pipe of the combustible gas and particle treatment combined device 3. The combustible gas and particulate matter treatment combined device 3 is provided with a particulate matter filter 9 in parallel, and the inlet and the outlet of the particulate matter filter 9 are respectively provided with a filter inlet valve 8 and a filter outlet valve 10. When the integral differential pressure of the combustible gas and particulate matter treatment combined device 3 is maintained at a high level for a long time, the inlet valve 1 and the outlet valve 4 are closed, the compressed air valve 7 is opened, the opening is carried out for 1-3 min, then the filter outlet valve 10 is quickly opened, so that the compressed air in the system is expanded and released instantly, and the compressed air is continuously input to clean the combustible gas and the non-combustible particulate matter in the particulate matter treatment combined device 3 and is collected in the particulate matter filter 9. Thereby realizing the purpose of cleaning ash.
The system can remove gaseous and solid pollutants in the tail gas, realizes coupling of online regeneration and offline ash removal, and is low in energy consumption and convenient to regenerate.
Claims (4)
1. The utility model provides an online regeneration off-line deashing boats and ships tail gas processing system which characterized in that: the device comprises an inlet valve (1), an air throttle (2), a combustible gas and particulate matter treatment combined device (3), an outlet valve (4), a reducing agent metering and injecting device (5), an SCR device (6), a compressed air valve (7) and a filter (9); an inlet valve (1) and an outlet valve (4) are respectively arranged on an inlet main pipe and an outlet main pipe of the combustible gas and particle treatment combined device (3); the combustible gas and particulate matter treatment combined device (3) consists of a plurality of combined device units, each combined device unit is sequentially provided with an electric heater (31), a DOC catalyst (32) and a DPF catalyst (33) from bottom to top, each combined device unit body is provided with a differential pressure transmitter (34), and an outlet of each combined device unit is provided with a temperature switch (35); an air throttle (2) is arranged at the inlet of each combined device unit; the combustible gas and particle treatment combined device (3) is provided with a particle filter (9) in parallel; a compressed air valve (7) is arranged on an outlet main pipe of the combustible gas and particle treatment combined device (3); the outlet of the outlet valve (4) is connected with the inlet of the SCR device (6), and the outlet of the SCR device (6) is communicated with the outside air.
2. The on-line regeneration off-line ash removal ship tail gas treatment system of claim 1, which is characterized in that: the aperture ratio of the throttle valve plate (21) of the throttle valve (2) is 5-25%.
3. The on-line regeneration off-line ash removal ship tail gas treatment system of claim 1, which is characterized in that: the inlet and the outlet of the particulate filter (9) are respectively provided with a filter inlet valve (8) and a filter outlet valve (10).
4. The on-line regeneration off-line ash removal ship tail gas treatment system of claim 1, which is characterized in that: the outlet valve (4) is positioned at the rear end of the compressed air valve (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021411849.5U CN212389410U (en) | 2020-07-17 | 2020-07-17 | On-line regeneration off-line deashing ship tail gas treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021411849.5U CN212389410U (en) | 2020-07-17 | 2020-07-17 | On-line regeneration off-line deashing ship tail gas treatment system |
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| Publication Number | Publication Date |
|---|---|
| CN212389410U true CN212389410U (en) | 2021-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021411849.5U Active CN212389410U (en) | 2020-07-17 | 2020-07-17 | On-line regeneration off-line deashing ship tail gas treatment system |
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| CN (1) | CN212389410U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111852618A (en) * | 2020-07-17 | 2020-10-30 | 浙江天地环保科技股份有限公司 | Online regeneration offline ash removal ship tail gas treatment system and method |
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2020
- 2020-07-17 CN CN202021411849.5U patent/CN212389410U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111852618A (en) * | 2020-07-17 | 2020-10-30 | 浙江天地环保科技股份有限公司 | Online regeneration offline ash removal ship tail gas treatment system and method |
| CN111852618B (en) * | 2020-07-17 | 2024-06-18 | 浙江浙能科技环保集团股份有限公司 | Online regeneration offline ash removal ship tail gas treatment system and method |
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Address after: 310012 99 Huaxing Road, Xihu District, Hangzhou, Zhejiang (Hangzhou Neusoft business building) Patentee after: Zhejiang Zheneng Technology Environmental Protection Group Co.,Ltd. Country or region after: China Address before: 310012 99 Huaxing Road, Xihu District, Hangzhou, Zhejiang (Hangzhou Neusoft business building) Patentee before: Zhejiang Tiandi Environmental Protection Technology Co.,Ltd. Country or region before: China |