CN211612084U - Fine dust removal device for Venturi - Google Patents
Fine dust removal device for Venturi Download PDFInfo
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- CN211612084U CN211612084U CN201921807924.7U CN201921807924U CN211612084U CN 211612084 U CN211612084 U CN 211612084U CN 201921807924 U CN201921807924 U CN 201921807924U CN 211612084 U CN211612084 U CN 211612084U
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Abstract
The utility model relates to a meticulous dust collector of venturi, including scrubbing tower, thick liquid entry, thick liquid pond, venturi, lower part shower nozzle feed pipe, upper portion shower nozzle feed pipe, venturi upper portion shower nozzle, thick liquid circulation return pipe, venturi lower part shower nozzle, thick liquid followThe ring pump, the thick liquid pond is connected inside the barrel of scrubbing tower, and the thick liquid entry is installed in the barrel trompil department that the trompil is higher than the thick liquid pond in the scrubbing tower, and venturi installs the trompil department on the slurry pond conical surface, and the upper portion shower nozzle sprays and covers the venturi export, and the lower part shower nozzle sprays and gets into the venturi entry completely, carries out the secondary washing to the flue gas that gets into the scrubbing tower, effectively solves fine dust and SO among the current wet flue gas desulfurization dust removal technique3Low efficiency of removing aerosol, blue smoke at the outlet of the chimney, trailing of smoke, corrosion of the chimney and the like.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to a meticulous dust collector of venturi is applied to waste gas dust removal technical field, especially is used for wet flue gas dust collector, uses the occasion of the fine dust in liquid medium washing and the absorption flue gas.
[ background of the invention ]
In chemical industry, oil refining and power generation industries at home and abroad, a large amount of flue gas emission can be generated during the production and operation of various devices. Although the flue gas discharged by various industries and devices is different, the flue gas contains a large amount of sulfide, nitrogen oxide and particulate matters (dust), and if the flue gas is directly discharged into the atmosphere, the flue gas can cause great harm to the environment and human bodies. Therefore, the flue gas needs to be washed and purified before being discharged into the atmosphere.
At present, over 70 percent of the flue gas desulfurization treatment facilities of domestic refining and chemical enterprises adopt a wet treatment process, namely 30 percent of NaOH solution is in contact reaction with the flue gas to absorb oxysulfide and dust in the flue gas. With the increasing national environmental protection emission standard, the requirements for controlling the pollutant emission index of industrial waste gas become stricter, and the existing wet flue gas desulfurization treatment facilities can not meet the requirements for the emission index any more. Aiming at the discharged flue gas of the refining enterprises, the most difficult problem is that the fine dust (the diameter is less than 3um) in the flue gas is extremely difficult to remove by adopting a conventional washing method and the existing desulfurization treatment facility, so a technical scheme for modification is urgently needed, and the modification is carried out on the basis of the existing desulfurization treatment facility, so that the treatment effect of the fine dust in the flue gas is further improved. The requirement on the flue gas emission index is met on the premise of minimum facility cost.
[ Utility model ] content
In order to overcome not enough among the background art, the utility model discloses a meticulous dust collector of venturi to solve in the current internal oil refining trade exhaust gas washing device, to the not good problem of fine dust washing effect.
And simultaneously, the utility model discloses can also effectively desorption SO in the waste gas3The aerosol can eliminate the problems of blue smoke, smoke trailing, chimney corrosion and the like at the chimney outlet of the waste gas washing device.
Realize above-mentioned purpose, the utility model discloses a following project organization:
a Venturi fine dust removal device comprises a washing tower 1; 2. a slurry inlet; 3. a slurry tank; 4. a venturi tube; 5. a lower nozzle supply tube; 6. an upper nozzle supply tube; 7. a nozzle at the upper part of the Venturi tube; 8. a slurry circulation return pipe; 9. a nozzle at the lower part of the Venturi tube; 10. and a slurry circulating pump.
The slurry pool 3 is a conical funnel structure, which contains circulating slurry and is connected inside the barrel of the washing tower 1, a slurry inlet is arranged at the opening of the barrel of the washing tower 1, the opening is higher than the slurry pool 3, the circulating slurry is guided into the slurry pool 3, the Venturi tube 4 is arranged at the opening on the conical surface of the slurry pool 3, the flue gas passes through the Venturi tube 4 from bottom to top, the upper spray head 7 of the Venturi tube is connected at the tail end of each branch port of the upper spray head liquid supply pipe 6, the outlets of the upper spray head 7 of the Venturi tube correspond to the flue gas outlets of the Venturi tube 4 one by one, the spray water curtain of the upper spray head 7 of the Venturi tube completely covers the flue gas outlet of the Venturi tube 4, the lower spray head 9 of the Venturi tube is connected at the tail end of each branch port of the lower spray head liquid supply pipe 5, the outlets of the lower spray head 9 of the, the upper part shower nozzle feed pipe 6 is installed in the barrel trompil department of scrubbing tower 1, the barrel trompil department of scrubbing tower 1 is installed to lower part shower nozzle feed pipe 5, thick liquid circulation return pipe 8 is connected in the lower part export of conical thick liquid pond 3, the leading-in thick liquid circulating pump 10 of thick liquid that will circulate, the end of thick liquid circulation return pipe 8 is connected to the entry of thick liquid circulating pump 10, the export of thick liquid circulating pump 10 is connected to the entry of lower part shower nozzle feed pipe 5 and upper part shower nozzle feed pipe 6, thick liquid circulating pump 10 will come from the circulation thick liquid pressure boost of thick liquid pond 3 and carry to lower part shower nozzle feed pipe 5 and upper part shower nozzle feed pipe 6, jet to coverage separately through venturi upper portion shower nozzle 7 and venturi.
Owing to adopted above-mentioned project organization, the utility model has the advantages of as follows:
1. the dust removal efficiency to the flue gas is high, because the exit of venturi tube all sets up the thick liquid shower nozzle, can make the flue gas under the condition of once-through route, with the twice contact of flue gas, has also improved the washing effect of circulation thick liquid to the flue gas promptly.
2. The inner space of the washing tower is fully utilized, the whole equipment scheme has a compact structure, the improvement is implemented in the washing tower, the equipment height of the washing tower is not required to be increased, and a pollutant treatment unit or equipment is not required to be independently arranged.
3. The resistance of the flue gas passing through the system is reduced, and the system has very important significance for the long-period continuous and stable operation of the whole device.
4. The modular design can be realized, and for the change of the flue gas treatment capacity, the number of Venturi tubes and the combination of inlet and outlet nozzles are increased or reduced.
5. Besides good washing effect on fine dust, the detergent has good washing effect on SO in flue gas2And SO3The aerosol can also be washed again to increase the removal effect.
[ description of the drawings ]
Fig. 1 is a schematic view (cross-sectional view) of the overall structure of the device according to the invention;
FIG. 2 is a graph showing the spray coverage of a venturi inlet nozzle in the apparatus of the present invention;
FIG. 3 shows the spray coverage of a venturi exit nozzle in the apparatus of the present invention;
[ detailed description ] embodiments
The following embodiments will explain in detail a certain embodiment of the present invention, rather than all embodiments, by making clear and complete description of the present invention with reference to the attached drawings 1-3, and the purpose of the present invention is to disclose all technical improvements within the scope of the present invention. All other embodiments obtained by those skilled in the art without creative efforts are within the scope of the present invention.
The utility model aims at providing a meticulous dust collector to solve the problem that above-mentioned prior art exists, solved current flue gas desulfurization technique fine dust and SO3Low efficiency of removing aerosol, blue smoke at the outlet of the chimney, trailing of smoke, corrosion of the chimney and the like.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
As shown in fig. 1, the slurry inlet is installed at an opening of the drum of the washing tower 1, which is higher than the slurry tank 3, and the externally circulated slurry is introduced into the slurry tank 3. The slurry pool 3 is a conical funnel structure, contains circulating slurry and is connected to the inside of the barrel of the washing tower 1. The slurry circulation return pipe 8 is connected to the lower outlet of the conical slurry tank 3, and introduces the circulating slurry into the slurry circulation pump 10. An inlet of the slurry circulation pump 10 is connected to the end of the slurry circulation return pipe 8, and pressurizes and conveys the circulating slurry from the slurry tank 3 to the lower head supply pipe 5 and the upper head supply pipe 6.
The lower nozzle liquid supply pipe 5 is installed at the opening of the barrel of the washing tower 1 and is positioned at the lower part of the venturi tube. The lower nozzle 9 of the venturi tube is connected with the tail end of each branch port of the lower nozzle liquid supply pipe 5, and the outlet of the lower nozzle 9 of the venturi tube is in one-to-one correspondence with the flue gas inlet of the venturi tube 4. The spray range of the lower nozzle 9 of the venturi tube is in a solid cone type distribution, as shown in fig. 2. The water spray curtain of the lower nozzle 9 of the Venturi tube completely enters the smoke inlet of the Venturi tube 4.
The upper nozzle liquid supply pipe 6 is installed at the opening of the barrel of the washing tower 1 and is positioned at the upper part of the venturi tube. The upper sprayer 7 of the venturi tube is connected with the tail end of each branch port of the upper sprayer liquid supply pipe 6, and the outlet of the upper sprayer 7 of the venturi tube is in one-to-one correspondence with the flue gas outlet of the venturi tube 4. The spray range of the upper spray head 7 of the venturi tube is in a hollow cone type distribution, as shown in fig. 3. The spray water curtain of the spray head 7 at the upper part of the Venturi tube completely covers the smoke outlet of the Venturi tube 4.
After entering the washing tower 1, the flue gas containing the pollutants passes through the venturi tube 4 from bottom to top. The slurry is first contacted at the inlet of the venturi 4 with the circulating slurry sprayed from the lower venturi nozzle 9 as shown in figure 2. After the circulating slurry catches dust particles in the flue gas, the circulating slurry continues to move upwards along with the flue gas. Then the flue gas enters the Venturi tube 4, and after acceleration, deceleration, pressure rise and pressure reduction, the outlet of the Venturi tube 4 is contacted with the circulating slurry sprayed by the spray head 7 at the upper part of the Venturi tube, as shown in figure 3. After the circulating slurry catches fine dust particles in the flue gas, the liquid catching the fine dust particles falls into the slurry tank 3, and then circulating spraying is realized through the slurry circulating pump 10.
The parts of the utility model not detailed are the prior art.
The above description is a preferred embodiment of the present invention, but similar ways other than the above embodiment, including changing the type of the spray head, the coverage area of the spray head, the flow rate of the spray head, the combination of the spray head and the circulating pump, the single liquid supply of the spray head by multiple circulating pumps, etc., are all included in the protection scope of the present invention.
The embodiments chosen for the purpose of disclosure of the present invention are to be considered as suitable herein. It should be understood, however, that the invention is intended to cover all such modifications and adaptations of the embodiments that come within the scope of the present concepts and inventions.
Claims (4)
1. The utility model provides a meticulous dust collector of venturi, includes scrubbing tower, thick liquid entry, thick liquid pond, venturi, lower part shower nozzle feed pipe, upper portion shower nozzle feed pipe, venturi upper portion shower nozzle, thick liquid circulation return pipe, venturi lower part shower nozzle, thick liquid circulating pump, characterized by: the thick liquid pond (3) is connected inside the barrel of the washing tower (1), the thick liquid inlet (2) is arranged at the opening of the barrel of the washing tower (1), the opening is higher than the thick liquid pond (3), the Venturi tube (4) is arranged at the opening on the conical surface of the thick liquid pond (3), the upper nozzle (7) of the Venturi tube is connected at the tail end of each branch opening of the upper nozzle liquid supply tube (6), the lower nozzle (9) of the Venturi tube is connected at the tail end of each branch opening of the lower nozzle liquid supply tube (5), the upper nozzle liquid supply tube (6) is arranged at the opening of the barrel of the washing tower (1) and is positioned at the upper part of the Venturi tube, the lower nozzle liquid supply tube (5) is arranged at the opening of the barrel of the washing tower (1) and is positioned at the lower part of the Venturi tube, the thick liquid circulating return tube (8) is connected at the lower outlet of the conical thick liquid pond (3), the inlet of the, the inlets of the lower spray head liquid supply pipe (5) and the upper spray head liquid supply pipe (6) are connected with the outlet of the slurry circulating pump (10) to form the Venturi fine dust removal device.
2. The venturi fine dust removing device according to claim 1, wherein: circulating slurry sprayed by the lower nozzle (9) of the venturi tube completely enters the flue gas inlet of the venturi tube (4).
3. The venturi fine dust removing device according to claim 1, wherein: and a circulating slurry water curtain sprayed by the spray head (7) at the upper part of the Venturi tube completely covers the flue gas outlet of the Venturi tube (4).
4. The venturi fine dust removing device according to claim 1, wherein: the lower nozzle (9) of the Venturi tube and the upper nozzle (7) of the Venturi tube can use the same slurry circulating pump (10) to supply liquid, and also can use a plurality of circulating pumps to supply liquid independently.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921807924.7U CN211612084U (en) | 2019-10-25 | 2019-10-25 | Fine dust removal device for Venturi |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921807924.7U CN211612084U (en) | 2019-10-25 | 2019-10-25 | Fine dust removal device for Venturi |
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| Publication Number | Publication Date |
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| CN211612084U true CN211612084U (en) | 2020-10-02 |
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| CN201921807924.7U Active CN211612084U (en) | 2019-10-25 | 2019-10-25 | Fine dust removal device for Venturi |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112843947A (en) * | 2020-12-31 | 2021-05-28 | 深圳市能源环保有限公司 | Dust removal method for lime slurry preparation system of waste incineration plant |
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2019
- 2019-10-25 CN CN201921807924.7U patent/CN211612084U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112843947A (en) * | 2020-12-31 | 2021-05-28 | 深圳市能源环保有限公司 | Dust removal method for lime slurry preparation system of waste incineration plant |
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