CN102120140A - Catalytic cracking flue gas desulfurization device - Google Patents
Catalytic cracking flue gas desulfurization device Download PDFInfo
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- CN102120140A CN102120140A CN2010105673758A CN201010567375A CN102120140A CN 102120140 A CN102120140 A CN 102120140A CN 2010105673758 A CN2010105673758 A CN 2010105673758A CN 201010567375 A CN201010567375 A CN 201010567375A CN 102120140 A CN102120140 A CN 102120140A
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Abstract
The invention relates to a catalytic cracking flue gas desulfurization device; the lower part of the tower body of a reaction tower is provided with a flue gas inlet; the top of the tower body is provided with a flue gas outlet; and the tower internals such as an acidifying section, a pneumatic desulfurization section, a demisting section and the like are arranged inside the tower body in sequence from the tower bottom to the top. The acidifying section consists of a liquid storing section and a pretreating and spraying section; the pretreating and spraying section consists of spray nozzles and a slurry pipeline; and the spray nozzles are respectively arranged at the upper part and the lower part of the slurry pipeline. A flue gas pipeline and a water baffle plate are arranged on the inner wall of the tower between the acidifying section and the pneumatic desulfurization section. The pneumatic desulfurization section consists of a pneumatic desulfurization unit parallel combination section and a liquid distributing layer; and a flue gas pipeline and a water baffle plate are arranged on the inner wall of the tower above the liquid distributing layer. A demisting section is arranged above the water baffle plate; and the demisting section consists of a demister connected with the inner wall of the tower and a demister rinsing section. The device efficiently overcomes the defects of much heavy dust collecting load and large water waste amount; simultaneously, the acidifying process and the desulfurization process in the technique are organically combined; and the device is compact in structure, and is a novel catalytic cracking flue gas desulfurization device which has high efficiency desulfurization and is capable of meeting running requirements.
Description
Technical field
The invention belongs to petrochemical industry environmental protection field, particularly a kind of catalytic cracking flue gas desulfurizer.
Background technology
Along with China's rapid economy development, the discharge capacity of sulfur dioxide also constantly increases, and the increase meeting serious harm of sulfur dioxide is to human health in the air; Sulfur dioxide also can produce harmful effect to the plant growth simultaneously, and nature is worked the mischief.
Entered since 20th century, the whole world is to SO
2The paces of administering are progressively accelerated, and the coal burning flue gas desulfurization technology is ripe at present, and desulfuration efficiency can reach 95%; Still need and improve constantly and petrochemical process removes the correlation technique of sulfur dioxide.
The catalytic cracking flue gas desulfurizer be in the petrochemical industry production field at a kind of cleaning equipment of harmful substances such as discharging waste gas, dust, at present domestic catalytic cracking and desulfurizing device is still immature.The catalytic cracking and desulfurizing specification requirement is higher, and desulfurizer needs long-term operation, and the ultrafine dust content in the flue gas is a lot, and intractability is big.More American-European industrially developed country are comparatively ripe in the technology in this field, wherein most SO that utilize in akaline liquid and the waste gas
2Produce acid-base neutralization, generate the neutral salt residue, so that abandon or regeneration.For the neutralization reaction of soda acid, a reaction tower is all arranged, in all technology as moisture film tower, packed tower, grid tower, perforated plate tower and water column tower etc., recent more employing spray column.Still have certain problem in the at present external catalytic cracking technology, big as institute's consumption alkali lye amount, power consumption is big, and the waste residue place buries underground huge fully, and it is big to discharge waste liquid amount, and particularly the discharge rate of sodium salt is too high, does not meet the environmental requirement of China.For environmental aspect, the natural conditions that adapt to China, just need develop the product that satisfies the need.
Summary of the invention
The object of the present invention is to provide a kind of compact conformation, can satisfy the catalytic cracking flue gas desulfurizer of high-efficiency desulfurization operation needs.
The objective of the invention is to be achieved through the following technical solutions:
A kind of catalytic cracking flue gas desulfurizer, constitute by reaction tower body of the tower and tower inner assembly, it is characterized in that: described reaction tower body of the tower bottom is provided with smoke inlet, the body of the tower top is provided with exhanst gas outlet, in reaction tower, upwards be disposed with acidifying section, Pneumatic desulphurization section, demist section from the bottom, the acidifying section is made of liquid storing section and preliminary treatment spray section, be separately positioned on up and down two sides of smoke inlet, the preliminary treatment spray section is made up of nozzle and slurries pipeline and nozzle is installed in the upper and lower of slurries pipeline respectively; On the inner wall of tower between acidifying section and the pneumatic desulfurization section, smoke pipe road and water fender were installed, the Pneumatic desulphurization section is made up of Pneumatic desulfuration unit combined segment in parallel and cloth liquid layer, the cloth liquid layer of being made up of pipeline and shower nozzle is separately positioned on the upper and lower of Pneumatic desulfuration unit combined segment in parallel, smoke pipe road and water fender were installed on the inner wall of tower above the cloth liquid layer, be the demist section above this water fender, demister that this demist Duan Youyu inner wall of tower links to each other and demister purge zone constitute.
And described reaction tower is for vertically columnar structured, or vertical square or vertical ellipsoidal structure.
And, described Pneumatic desulfuration unit combined segment in parallel, its percent opening is the 15%-50% scope of place desulfurizer sectional area.
Beneficial effect of the present invention is:
The present invention utilizes aerodynamic principle and method for designing, provide and utilized Pneumatic desulfuration unit combined segment in parallel to carry out the high efficiency desulfurization, effectively overcome the drawback that load of dust remove is overweight, liquid-gas ratio is high, be a holder structure compactness, can satisfy the new catalytic cracking flue gas desulfur device of the high-efficiency desulfurization of catalytic cracking unit long-term operation needs.
Description of drawings
Fig. 1 is a catalytic cracking flue gas desulfurizer structural representation of the present invention;
Fig. 2 is that the A-A of Fig. 1 is to cross-sectional view;
Fig. 3 is that the B-B of Fig. 1 is to cross-sectional view;
Fig. 4 is that the C-C of Fig. 1 is to cross-sectional view.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing and by specific embodiment, and following examples are descriptive, are not determinate, can not limit protection scope of the present invention with this.
A kind of catalytic cracking flue gas desulfurizer, with reference to Fig. 1, profile shown in the drawings is vertical columnar structured reaction tower 11, and this reaction tower can also be structures such as vertically square or vertical ellipse, reaction tower body of the tower bottom is a smoke inlet 9, and reaction tower body of the tower top is an exhanst gas outlet 1.In reaction tower, upwards be disposed with acidifying section, Pneumatic desulphurization section, demist section from the bottom.The acidifying section is made of liquid storing section 10 and preliminary treatment spray section 8, is separately positioned on upper and lower two sides of smoke inlet, and the preliminary treatment spray section is made up of nozzle and slurries pipeline and nozzle is installed in the upper and lower of slurries pipeline respectively.Above the preliminary treatment spray section smoke pipe road 7 and water fender 12, cross the cross section structure of smoke pipe road and water fender and see Fig. 2, be made of water fender that installs at the barrel inner wall even distribution and the uniform smoke pipe road of crossing, it is six that present embodiment is crossed the smoke pipe road, can require to be provided with according to reality.Be the Pneumatic desulphurization section above this water fender, the Pneumatic desulphurization section is made up of Pneumatic desulfuration unit combined segment 6 in parallel and cloth liquid layer 5.Pneumatic desulfuration unit combined segment in parallel is made of Pneumatic desulfuration unit 14 parallel connections, be positioned at the middle part of whole device, this section has good capturing ability to sulfur dioxide and ultrafine dust, referring to Fig. 3, Pneumatic desulfuration unit combined segment in parallel be provided with perforate on, following shrouding 13, it is uniformly-spaced evenly distributed that perforate is, be provided with the Pneumatic desulfuration unit that contains the awl cover up and down in the corresponding perforate of shrouding, on, following shrouding and inner wall of tower weld together, this design can be brought up the High Velocity Area of the relative motion of a gas phase and liquid phase in tower, high speed with gas-liquid, fully separating of high strength blending and gas-liquid organically is combined within the tower body, has efficient, the full blast resistance ratios that resistance is little; The number and the diameter of the required Pneumatic desulfuration unit of this combined segment, what, desulfuration efficiency and resistance according to the exhaust gas volumn of required processing are determined, present embodiment Figure 3 shows that uniform 18, and the percent opening of this Pneumatic desulfuration unit combined segment in parallel is the 15%-50% scope of place reaction tower sectional area.The cloth liquid layer of being made up of pipeline and shower nozzle is arranged on the upper and lower of Pneumatic desulfuration unit combined segment in parallel, and smoke pipe road 15 and water fender 4 were installed on the inner wall of tower above the cloth liquid layer, prevents that the demister flushing water from entering the Pneumatic desulphurization section, influences water balance.Be the demist section above the water plate, this section is made of demister 2 and purge zone 3, is provided with the two-stage demister in the present embodiment accompanying drawing 1; The top of demist section is the exhanst gas outlet that is arranged on the reaction tower top, and the flue gas that purifies is entered atmosphere.
Among the present invention, the structure of structure, demister and the purge zone of the preliminary treatment spray section that is not described in detail is a prior art, does not therefore specifically describe.
Claims (3)
1. catalytic cracking flue gas desulfurizer, constitute by reaction tower body of the tower and tower inner assembly, it is characterized in that: described reaction tower body of the tower bottom is provided with smoke inlet, the body of the tower top is provided with exhanst gas outlet, in reaction tower, upwards be disposed with acidifying section, Pneumatic desulphurization section, demist section from the bottom, the acidifying section is made of liquid storing section and preliminary treatment spray section, be separately positioned on up and down two sides of smoke inlet, the preliminary treatment spray section is made up of nozzle and slurries pipeline and nozzle is installed in the upper and lower of slurries pipeline respectively; On the inner wall of tower between acidifying section and the pneumatic desulfurization section, smoke pipe road and water fender were installed, the Pneumatic desulphurization section is made up of Pneumatic desulfuration unit combined segment in parallel and cloth liquid layer, the cloth liquid layer of being made up of pipeline and shower nozzle is separately positioned on the upper and lower of Pneumatic desulfuration unit combined segment in parallel, smoke pipe road and water fender were installed on the inner wall of tower above the cloth liquid layer, be the demist section above this water fender, demister that this demist Duan Youyu inner wall of tower links to each other and demister purge zone constitute.
2. catalytic cracking flue gas desulfurizer according to claim 1 is characterized in that: described reaction tower is for vertically columnar structured, or vertical square or vertical ellipsoidal structure.
3. catalytic cracking flue gas desulfurizer according to claim 1 is characterized in that: described Pneumatic desulfuration unit combined segment in parallel, its percent opening is the 15%-50% scope of place desulfurizer sectional area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105673758A CN102120140A (en) | 2010-12-01 | 2010-12-01 | Catalytic cracking flue gas desulfurization device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105673758A CN102120140A (en) | 2010-12-01 | 2010-12-01 | Catalytic cracking flue gas desulfurization device |
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| CN102120140A true CN102120140A (en) | 2011-07-13 |
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| CN2010105673758A Pending CN102120140A (en) | 2010-12-01 | 2010-12-01 | Catalytic cracking flue gas desulfurization device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105944547A (en) * | 2016-06-20 | 2016-09-21 | 航天环境工程有限公司 | Absorption tower device with ultralow emission of flue gas and application |
| CN106512662A (en) * | 2016-11-15 | 2017-03-22 | 中石化南京工程有限公司 | Dust removing method and device for catalytic-cracking fume |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2386872Y (en) * | 1999-09-02 | 2000-07-12 | 北京天福力高科技发展中心 | Pneumatic desulfurization dust collector |
| CN2808276Y (en) * | 2005-08-02 | 2006-08-23 | 晏华 | Large-volume high-concentration fume purifying equipment |
| CN201115813Y (en) * | 2007-10-12 | 2008-09-17 | 中国航天空气动力技术研究院 | Pneumatic power desulfurizing tower |
| CN101406801A (en) * | 2007-10-12 | 2009-04-15 | 中国航天空气动力技术研究院 | Parallel combination structure of pneumatic desulfuration unit |
-
2010
- 2010-12-01 CN CN2010105673758A patent/CN102120140A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2386872Y (en) * | 1999-09-02 | 2000-07-12 | 北京天福力高科技发展中心 | Pneumatic desulfurization dust collector |
| CN2808276Y (en) * | 2005-08-02 | 2006-08-23 | 晏华 | Large-volume high-concentration fume purifying equipment |
| CN201115813Y (en) * | 2007-10-12 | 2008-09-17 | 中国航天空气动力技术研究院 | Pneumatic power desulfurizing tower |
| CN101406801A (en) * | 2007-10-12 | 2009-04-15 | 中国航天空气动力技术研究院 | Parallel combination structure of pneumatic desulfuration unit |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105944547A (en) * | 2016-06-20 | 2016-09-21 | 航天环境工程有限公司 | Absorption tower device with ultralow emission of flue gas and application |
| CN105944547B (en) * | 2016-06-20 | 2019-01-08 | 航天环境工程有限公司 | A kind of flue gas minimum discharge absorbs tower apparatus and application |
| CN106512662A (en) * | 2016-11-15 | 2017-03-22 | 中石化南京工程有限公司 | Dust removing method and device for catalytic-cracking fume |
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Application publication date: 20110713 |