CN109647057A - A kind of device and method for reducing dust content in MCP device flue gas - Google Patents
A kind of device and method for reducing dust content in MCP device flue gas Download PDFInfo
- Publication number
- CN109647057A CN109647057A CN201910100956.1A CN201910100956A CN109647057A CN 109647057 A CN109647057 A CN 109647057A CN 201910100956 A CN201910100956 A CN 201910100956A CN 109647057 A CN109647057 A CN 109647057A
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- CN
- China
- Prior art keywords
- flue
- mcp
- dust content
- flue gas
- reducing dust
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
-
- 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
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/20—Combinations of devices covered by groups B01D45/00 and B01D46/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D11/00—Feed-water supply not provided for in other main groups
- F22D11/02—Arrangements of feed-water pumps
- F22D11/06—Arrangements of feed-water pumps for returning condensate to boiler
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
Abstract
The invention discloses a kind of device and methods for reducing dust content in MCP device flue gas, wherein, device includes sack cleaner, chimney and waste heat boiler, the side of chimney is equipped with the flue one and flue two communicated therewith, flue one and flue two one end and MCP device far from chimney communicate, flue one is equipped with water-sealed valve, waste heat boiler is arranged on flue two, it is also vertical on flue two to be equipped with the flue three communicated therewith, the one end of flue three far from flue two is connected with the inlet end of sack cleaner, the outlet side of sack cleaner is equipped with flue four, flue four one end and flue two far from sack cleaner communicate；Method includes reducing level of catalyst fines, adds three-stage cyclone separator in the smoke outlet of MCP device and for reducing the device of dust content in MCP device flue gas.The present invention can be effectively reduced the content of dust in flue gas, to reduce environmental pollution, safety and environmental protection is guaranteed.
Description
Technical field
The present invention relates to dedusting technology fields, and in particular to a kind of dress for reducing dust content in MCP device flue gas
It sets and method.
Background technique
It is domestic first set heavy oil selective catalysis cracking dress that Yangzhou Petroleum Co., Ltd., which refines oil subsidiary factory MCP combined unit,
It sets, the patented technology researched and developed using Sinopec Research Institute of Petro-Chemical Engineering, is mainly used for using reduced crude as raw material fecund
Low-carbon alkene designs 250,000 tons/year of working ability, is installed on primary success of driving on July 30th, 2011.It is run in actual production
In, MCP combined unit is because its technique is unique and complexity, since fine powder content is higher in MCP technique special-purpose catalyst, and
In operating process, it is higher to lead to discharge fine powder content in flue gas for the various aspects reason such as regenerative system structure difference.With society
Development, environmental requirement increasingly improve, " clear water blue sky " theory that petrochemical industry proposes in the major oil refining enterprise's active response in the whole nation.
Summary of the invention
Problem to be solved by this invention is: provide a kind of device for reducing dust content in MCP device flue gas and
Method can effectively reduce the dust content from the flue gas being discharged in MCP device.
The present invention in order to solve the above problem provided by technical solution are as follows: one kind for reducing dust in MCP device flue gas
The device of content, including sack cleaner, chimney and waste heat boiler, the side of the chimney are equipped with one He of flue communicated therewith
Flue two, the flue one and flue two one end and MCP device far from the chimney communicate, and the flue one is equipped with water seal
Valve, the waste heat boiler are arranged on the flue two, also vertical equipped with the flue three communicated therewith on the flue two, described
Flue three is connected far from one end of the flue two with the inlet end of the sack cleaner, the outlet side of the sack cleaner
Equipped with flue four, the flue four one end and the flue two far from the sack cleaner are communicated.
Preferably, the flue four is equipped with flue five, and the both ends of the flue five are connected to the flue four, described
Flue five is equipped with blower bypass road pneumatic operated valve.
Preferably, the flue four, which is located on one section of five both ends of flue, is successively arranged air-introduced machine and fan outlet gas
Dynamic valve.
Preferably, the flue three is equipped with deduster inlet pneumatic valve.
Preferably, it is additionally provided with metal hard-sealing butterfly valve and pneumatic operated valve on the flue two, the metal hard-sealing butterfly valve is set
It sets on one section on the flue two between the flue three and flue four, the pneumatic operated valve is arranged in the flue two
On the position of MCP device.
A method of for reducing dust content in MCP device flue gas, the described method comprises the following steps,
1) it, reduces level of catalyst fines: using catalyst particle diameter urging for 0~40um size distribution < 11.8%
Agent.
2), three-stage cyclone separator is added in the smoke outlet of MCP device.
3), reinforce the communication with scheduling and boiler room, vapor (steam) temperature is improved, and guarantee that steam pressure is steady, secondly
Increase waste heat boiler steam exhaust recovery process, wherein waste heat boiler steam exhaust is mainly made of following: pipe network concentration water delivery 150kg/h,
Heat tracing concentrates water delivery 100kg/h, oxygen-eliminating device tail gas to empty 250kg/h, adds up to 500kg/h, weary to waste heat boiler during maintenance
Vapour recovery process carries out technological transformation, and the MCP device diesel oil plate heat exchanger that reuses is as steam exhaust condenser；It connects and draws low-temperature water heating；It connects and draws
Condensed water process is pumped to drum by condensed water and sends out vapour again to water pot is condensed；
4) one kind being connected with the three-stage cyclone separator, is added behind the three-stage cyclone separator to be used for
Reduce the device of dust content in MCP device flue gas.
Compared with prior art, the invention has the advantages that catalyst, raising steam of the present invention by using better quality
Temperature, steady steam pressure increase three-stage cyclone separator recycling fine powder, for reducing dust content in MCP device flue gas
The measures such as device, greatly reduce the content of dust in flue gas, to reduce environmental pollution, safety and environmental protection is guaranteed.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes a part of the invention, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.
Fig. 1 is a kind of overall structure diagram for reducing the device of dust content in MCP device flue gas of the present invention；
Attached drawing mark: 1, flue two, 2, water-sealed valve, 3, metal hard-sealing butterfly valve, 4, flue one, 5, waste heat boiler, 6, gas
Dynamic valve, 7, deduster inlet pneumatic valve, 8, flue three, 9, sack cleaner, 10, flue four, 11, air-introduced machine, 12, fan outlet
Pneumatic operated valve, 13, blower bypass road pneumatic operated valve, 14, flue five, 15, chimney.
Specific embodiment
Carry out the embodiment that the present invention will be described in detail below in conjunction with accompanying drawings and embodiments, how the present invention is applied whereby
Technological means solves technical problem and reaches the realization process of technical effect to fully understand and implement.
The specific embodiment of the device of the invention is as shown in Figure 1, a kind of for reducing dust content in MCP device flue gas
Device, including sack cleaner 9, chimney 15 and waste heat boiler 5, the side of the chimney 15 are equipped with the flue 1 communicated therewith
With flue 21, the flue 1 and flue 21 one end and MCP device far from the chimney 15 are communicated, on the flue 1
Equipped with water-sealed valve 2, the waste heat boiler 5 is arranged on the flue 21, and also vertical be equipped with communicates therewith on the flue 21
Flue 38, the one end of the flue 38 far from the flue 21 is connected with the inlet end of the sack cleaner 9, described
The outlet side of sack cleaner 9 is equipped with flue 4 10, the flue 4 10 one end and the cigarette far from the sack cleaner 9
Road 21 communicates.
The flue 4 10 is equipped with flue 5 14, and the both ends of the flue 5 14 are connected to the flue 4 10, institute
Flue 5 14 is stated equipped with blower bypass road pneumatic operated valve 13.
The flue 4 10, which is located on one section of 5 14 both ends of flue, is successively arranged air-introduced machine 11 and fan outlet gas
Dynamic valve 12.
The flue 38 is equipped with deduster inlet pneumatic valve 7.
Metal hard-sealing butterfly valve 3 and pneumatic operated valve 6 are additionally provided on the flue 21, the setting of metal hard-sealing butterfly valve 3 exists
On one section on the flue 21 between the flue 38 and flue 4 10, the pneumatic operated valve 6 is arranged in the flue
21 on the position of MCP device.
After upper above-mentioned apparatus, dust emission is reduced, reduces pollution, in-line analyzer data measured is as follows:
Flue gas flow :~45000Nm3/h；
Flue-gas temperature: 150~200 DEG C；
Flue dust partial size: 0~40 μm
Oxygen content of smoke gas: 1.5~3%；
Flue gas water content: 10~15%；
Particle content :~25mg/Nm3；
Amount of nitrogen oxides :~95mg/Nm3；
Sulfur oxides level :~45mg/Nm3；
A method of for reducing dust content in MCP device flue gas, the described method comprises the following steps,
1) it, reduces level of catalyst fines: using catalyst particle diameter urging for 0~40um size distribution < 11.8%
Agent.In view of the long-term operation of device, catalyst mobile performance is taken into account, Yangzhou Petroleum Co., Ltd. contacts producer's weight
Fresh dose is newly replaced, guarantee < 40um screening composition < 11.8% reduces catalyst abrasion, improves catalyst outgoing.By
After on probation, dust content is declined by the original near 60mg/m3 of 80mg/m3 in the flue gas of detection, and slurry oil ash also has
Declined.Illustrate that reduction catalyst screening group reduces dust content in flue gas in pairs and has positive effect.
2), three-stage cyclone separator is added in the smoke outlet of MCP device.Three rotation shells are Q245R, and internals material is adopted
With 07Cr19Ni10, lining uses single layer insulating and wearing-resistant lining；Three rotation diameter phis 3800, the separation of PST-300 type SD (L) -002 are single
Pipe 20；It is spare when reserved 6 positions are as expansion energy；Three, which screw in mouth smoke catalytic agent content, is not more than 500mg/m3, exports cigarette
Gas catalyst content is not more than 60mg/m3.Dust content has obtained effective control in flue gas.
Catalyst content comparison in three rotation investment front and back flue gases
3), reinforce the communication with scheduling and boiler room, vapor (steam) temperature is improved, and guarantee that steam pressure is steady, secondly
Increase waste heat boiler steam exhaust recovery process, wherein waste heat boiler steam exhaust is mainly made of following: pipe network concentration water delivery 150kg/h,
Heat tracing concentrates water delivery 100kg/h, oxygen-eliminating device tail gas to empty 250kg/h, adds up to 500kg/h, weary to waste heat boiler during maintenance
Vapour recovery process carries out technological transformation, and the MCP device diesel oil plate heat exchanger that reuses is as steam exhaust condenser；It connects and draws low-temperature water heating；It connects and draws
Condensed water process is pumped to drum by condensed water and sends out vapour again to water pot is condensed；Steam exhaust recovering device is added, steam exhaust is not only recycled
Waste heat, while the loss of vapor is decreased, save water consumption.
4) one kind being connected with the three-stage cyclone separator, is added behind the three-stage cyclone separator to be used for
Reduce the device of dust content in MCP device flue gas.MCP device ash-laden gas enters bag filter, and particle is big, heavy
Dust falls into ash bucket since the effect of gravity settles down, and the gas containing relatively fine dust passes through under the action of deflector
Filter bag, dust is by detention, thus achieve the purpose that purifying smoke, the dust content meet the requirement of environmental protection of flue gas after purification.
The beneficial effects of the present invention are: the present invention is by using the catalyst of better quality, raising vapor (steam) temperature, steady steaming
Steam pressure increases three-stage cyclone separator recycling fine powder, for reducing measures such as the devices of dust content in MCP device flue gas,
The content of dust in flue gas is greatly reduced, to reduce environmental pollution, safety and environmental protection is guaranteed.
Only highly preferred embodiment of the present invention is described above, but is not to be construed as limiting the scope of the invention.This
Invention is not only limited to above embodiments, and specific structure is allowed to vary.All protection models in independent claims of the present invention
Interior made various change is enclosed to all fall in the scope of protection of the present invention.
Claims (6)
1. a kind of device for reducing dust content in MCP device flue gas, it is characterised in that: including sack cleaner (9), cigarette
Chimney (15) and waste heat boiler (5), the side of the chimney (15) is equipped with the flue one (4) and flue two (1) that communicate therewith, described
Flue one (4) and flue two (1) one end and MCP device far from the chimney (15) communicate, and the flue one (4) is equipped with water
It seals valve (2), the waste heat boiler (5) is arranged on the flue two (1), also vertical on the flue two (1) to be equipped with and its phase
Logical flue three (8), the flue three (8) is far from one end of the flue two (1) and the inlet end of the sack cleaner (9)
Connection, the outlet side of the sack cleaner (9) are equipped with flue four (10), and the flue four (10) is far from the sack cleaner
(9) one end and the flue two (1) communicates.
2. a kind of device for reducing dust content in MCP device flue gas according to claim 1, it is characterised in that:
The flue four (10) is equipped with flue five (14), and the both ends of the flue five (14) are connected to the flue four (10), institute
Flue five (14) is stated equipped with blower bypass road pneumatic operated valve (13).
3. a kind of device for reducing dust content in MCP device flue gas according to claim 2, it is characterised in that:
The flue four (10), which is located at, is successively arranged air-introduced machine (11) on one section of flue five (14) both ends and fan outlet is pneumatic
Valve (12).
4. a kind of device for reducing dust content in MCP device flue gas according to claim 1, it is characterised in that:
The flue three (8) is equipped with deduster inlet pneumatic valve (7).
5. a kind of device for reducing dust content in MCP device flue gas according to claim 1, it is characterised in that:
Metal hard-sealing butterfly valve (3) and pneumatic operated valve (6) are additionally provided on the flue two (1), metal hard-sealing butterfly valve (3) setting exists
On one section on the flue two (1) between the flue three (8) and flue four (10), pneumatic operated valve (6) setting exists
The flue two (1) is on the position of MCP device.
6. a kind of method for reducing dust content in MCP device flue gas, it is characterised in that: the method includes following steps
Suddenly,
1) it, reduces level of catalyst fines: using catalyst particle diameter for the catalysis of 0~40um size distribution < 11.8%
Agent.
2), three-stage cyclone separator is added in the smoke outlet of MCP device.
3), reinforce the communication with scheduling and boiler room, vapor (steam) temperature is improved, and guarantee that steam pressure is steady, secondly increased
Waste heat boiler steam exhaust recovery process, wherein waste heat boiler steam exhaust is mainly made of following: pipe network concentrates water delivery 150kg/h, heat tracing
It concentrates water delivery 100kg/h, oxygen-eliminating device tail gas to empty 250kg/h, adds up to 500kg/h, waste heat boiler steam exhaust is returned during maintenance
It receives process and carries out technological transformation, the MCP device diesel oil plate heat exchanger that reuses is as steam exhaust condenser；It connects and draws low-temperature water heating；It connects and draws condensation
Water flow-path is pumped to drum by condensed water and sends out vapour again to water pot is condensed；
4), added behind the three-stage cyclone separator be connected with the three-stage cyclone separator such as claim 1-
A kind of 4 any devices for reducing dust content in MCP device flue gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910100956.1A CN109647057A (en) | 2019-02-01 | 2019-02-01 | A kind of device and method for reducing dust content in MCP device flue gas |
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|---|---|---|---|
| CN201910100956.1A CN109647057A (en) | 2019-02-01 | 2019-02-01 | A kind of device and method for reducing dust content in MCP device flue gas |
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| CN201910100956.1A Pending CN109647057A (en) | 2019-02-01 | 2019-02-01 | A kind of device and method for reducing dust content in MCP device flue gas |
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Application publication date: 20190419 |