CN112191075B - Moisture-removing type device for directionally recovering methyl chloride in waste gas generated in production of maltol - Google Patents
Moisture-removing type device for directionally recovering methyl chloride in waste gas generated in production of maltol Download PDFInfo
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- CN112191075B CN112191075B CN202010951410.XA CN202010951410A CN112191075B CN 112191075 B CN112191075 B CN 112191075B CN 202010951410 A CN202010951410 A CN 202010951410A CN 112191075 B CN112191075 B CN 112191075B
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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
- B01D53/14—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 absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
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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
- B01D53/14—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 absorption
- B01D53/1406—Multiple stage absorption
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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
- B01D53/14—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 absorption
- B01D53/1418—Recovery of products
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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
- B01D53/14—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 absorption
- B01D53/1456—Removing acid components
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/38—Separation; Purification; Stabilisation; Use of additives
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Abstract
The invention provides a moisture-rejection-type directional recovery device for waste gas chloromethane in maltol production, which belongs to the technical field of waste gas recovery and comprises a box body, wherein a pickling assembly, a washing assembly and an alkali washing assembly are sequentially arranged in the box body in an up-and-down distribution manner, the pickling assembly, the washing assembly and the alkali washing assembly have the same structure and respectively comprise a fixed seat and a ring plate, the fixed seat is fixedly arranged on the inner wall of the box body in an annular structure, the ring plate is movably arranged on the inner side of the fixed seat, the ring plate is hollow, a plurality of spray holes in annular distribution are formed in the inner side of the ring plate, and the ring plates corresponding to the pickling assembly, the washing assembly and the alkali washing assembly are sequentially connected through connecting rods. The embodiment of the invention has the advantages of convenient operation and good washing effect of the chloromethane, and can greatly reduce energy consumption while realizing the directional recovery of the chloromethane, thereby saving the recovery cost of the chloromethane and improving the economic benefit.
Description
Technical Field
The invention belongs to the technical field of waste gas recovery, and particularly relates to a moisture-removing type directional recovery device for methyl chloride in waste gas produced by maltol.
Background
Chloromethane, also known as methyl chloride, is a colorless and easily liquefied gas, is stored in a steel cylinder in a pressurized liquefied state, belongs to an organic halide, is slightly soluble in water, and is easily soluble in chloroform, diethyl ether, ethanol and acetone. Easy combustion, easy explosion, moderate harm (poison harm index 43), no corrosiveness, and reaction of methanol and hydrochloric acid with water at high temperature (above 400 deg.C) and under strong light, heating or generating phosgene when meeting flame.
The industrial production of maltol uses, can produce a large amount of waste gases, through detecting the back, contains a large amount of methyl chloride in the waste gas, among the prior art, to the above-mentioned waste gas that contains a large amount of methyl chloride direct emission after the simple processing mostly, this kind of mode can cause the pollution to the environment, and the direct emission of arbitrary methyl chloride also can lead to the plain and useless waste of resource moreover.
Disclosure of Invention
Aiming at the defects of the prior art, the technical problem to be solved by the embodiment of the invention is to provide a moisture-removing type directional recovery device for methyl chloride in waste gas generated in maltol production.
In order to solve the technical problems, the invention provides the following technical scheme:
a moisture-rejection-type maltol production waste gas methyl chloride directional recovery device comprises a box body, wherein a pickling component, a washing component and an alkali washing component are sequentially arranged inside the box body in an up-down distribution mode, the pickling component, the washing component and the alkali washing component are identical in structure and respectively comprise a fixing seat and a ring plate, the fixing seat is fixedly arranged on the inner wall of the box body in an annular structure, the ring plate is movably arranged on the inner side of the fixing seat, the inner side of the ring plate is hollow, a plurality of spray holes which are annularly distributed are formed in the inner side of the ring plate, the ring plates corresponding to the pickling component, the washing component and the alkali washing component are sequentially connected through connecting rods, the ring plates corresponding to the pickling component, the washing component and the alkali washing component are respectively connected with an external acid storage pool, an external water storage pool and an external alkali storage pool corresponding pump, a plurality of first air deflectors and a plurality of second air deflectors are fixedly arranged at the bottom of the ring plate corresponding to the alkali washing component, the first air deflectors and the second air deflectors are distributed in mirror symmetry with respect to the ring plate, and the first air deflectors and the second air deflectors are inclined to the diameter of the ring plate; two groups of air inlet nozzles are symmetrically arranged on the outer sides of the first air deflector and the second air deflector in the displacement mode at the inner bottom of the box body, one ends of the two groups of air inlet nozzles are connected with an air inlet pipe, one end, far away from the air inlet nozzles, of the air inlet pipe extends to the outside of the box body and is connected with external air supply equipment, and an electromagnetic valve is arranged on the air inlet pipe.
As a further improvement of the invention: the fixing seat is internally provided with a ring groove corresponding to the ring plate, and the inner wall of the ring groove is provided with a plurality of rolling supporting pieces which are uniformly distributed.
As a further improvement of the invention: the rolling support piece is a ball embedded in the inner wall of the ring groove.
As a further improvement of the invention: and the external acid storage tank, the external water storage tank and the external alkali storage tank are respectively connected with the corresponding annular plates through hoses.
As a still further improvement of the invention: flow blocking assemblies are arranged between the acid washing assembly and the water washing assembly and between the water washing assembly and the alkali washing assembly; the flow blocking component comprises a flow blocking cover of a conical structure, the flow blocking cover is fixedly arranged on the corresponding connecting rod, the conical tip of the flow blocking cover is arranged upwards, the flow blocking cover is provided with an air outlet, and the upper part of the flow blocking cover is provided with a blocking piece corresponding to the air outlet.
As a still further improvement of the invention: the upper parts of the fixing seats corresponding to the alkaline washing assembly and the water washing assembly are provided with sealing elements, and the bottoms of the flow blocking covers are attached to the upper parts of the sealing elements.
As a still further improvement of the invention: the sealing member is an annular protrusion.
Compared with the prior art, the invention has the beneficial effects that:
the embodiment of the invention has the advantages of convenient operation and good washing and recycling effects of the chloromethane, and can greatly reduce energy consumption while realizing the directional recycling of the chloromethane, thereby saving the recycling cost of the chloromethane and improving the economic benefit.
Drawings
FIG. 1 is a schematic structural diagram of a moisture-rejecting methyl chloride directional recovery device for waste gas from maltol production;
FIG. 2 is a schematic structural diagram of a ring plate in a moisture-rejecting type device for directionally recovering methyl chloride from waste gas generated in maltol production;
FIG. 3 is a schematic structural diagram of an alkaline washing component in a moisture-removing type maltol production waste gas methyl chloride directional recovery device;
FIG. 4 is an enlarged view of area A of FIG. 1;
in the figure: 1-box body, 2-air inlet pipe, 3-air inlet nozzle, 4-first air deflector, 5-fixing seat, 6-annular groove, 7-connecting rod, 8-flow blocking component, 9-air outlet pipe, 10-annular plate, 11-second air deflector, 12-spray hole, 13-rolling support component, 14-sealing component, 15-flow blocking cover, 16-blocking sheet and 17-air outlet hole.
Detailed Description
The technical solution of the present patent will be further described in detail with reference to the following embodiments.
Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.
In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.
In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.
Example 1
Referring to fig. 1-4, the embodiment provides a moisture-removing type waste gas methyl chloride directional recovery device for maltol production, which comprises a box body 1, wherein a pickling component, a washing component and an alkaline washing component are sequentially arranged inside the box body 1 in an up-down distribution manner, the pickling component, the washing component and the alkaline washing component have the same structure and respectively comprise a fixed seat 5 and a ring plate 10, the fixed seat 5 is fixedly arranged on the inner wall of the box body 1 in an annular structure, the ring plate 10 is movably arranged inside the fixed seat 5, the ring plate 10 is hollow inside, a plurality of spray holes 12 are formed in the inner side of the ring plate 10 in an annular distribution manner, the ring plates 10 corresponding to the pickling component, the washing component and the alkaline washing component are sequentially connected through a connecting rod 7, and the ring plates 10 corresponding to the pickling component, the washing component and the alkaline washing component are respectively connected with an external acid storage tank (not shown), An external water reservoir (not shown) and an external alkali storage pool (not shown) are connected with each other corresponding to a pump, a plurality of first air deflectors 4 and a plurality of second air deflectors 11 are fixedly arranged at the bottom of a ring plate 10 corresponding to the alkali washing component, the plurality of first air deflectors 4 and the plurality of second air deflectors 11 are distributed in mirror symmetry about the ring plate 10, and the plurality of first air deflectors 4 and the plurality of second air deflectors 11 are inclined to the diameter of the ring plate 10 (as shown in fig. 2); the bottom displacement first aviation baffle 4 and the second aviation baffle 11 outside symmetry in box 1 are provided with two sets of shower nozzle 3 that admits air, and two sets of 3 one end of shower nozzle are connected with intake pipe 2 that admits air, the one end that intake pipe 2 kept away from shower nozzle 3 extends to the box 1 outside and links to each other with external air supply equipment (not shown), is provided with solenoid valve (not shown) on the intake pipe 2.
Acid liquor, water and alkali liquor are respectively flushed into the corresponding annular plates 10 by utilizing an external acid storage tank, a water storage tank and an alkali storage tank and are sprayed out from spray holes 12 in the inner sides of the annular plates 10, waste gas can be introduced into a gas inlet spray head 3 from a gas inlet pipe 2 by external gas supply equipment and is sprayed out from the gas inlet spray head 3, the waste gas can float upwards after entering the box body 1 and further passes through the middle parts of the annular plates 10 corresponding to an alkali washing assembly, a water washing assembly and an acid washing assembly, acid gas in the waste gas is washed by matching the alkali liquor sprayed out from the spray holes 12, water-soluble gas in the waste gas is further washed by utilizing water after the waste gas is washed by alkali, and finally, the sprayed acid liquor is used for washing the alkali gas in the waste gas so as to remove the alkali waste gas and water in the waste gas; when external air supply equipment is used for introducing waste gas into the box body 1, the electromagnetic valve is used for controlling one group of air inlet pipes 2 to be closed, the waste gas is sprayed out from the air inlet spray heads 3 corresponding to the other group of air inlet pipes 2 and acts on the first air deflector 4, the diameter of the first air deflector 4 and the diameter of the ring plate 10 are inclined, the ring plate 10 is movably arranged on the inner side of the fixing seat 5, the waste gas can push the first air deflector 4 to drive the ring plates 10 to rotate on the inner sides of the corresponding fixing seats 5, and further the alkali liquor, the water and the acid liquor sprayed out of the radial spray holes 12 are driven to rotate, so that the spraying range of the alkali liquor, the water and the acid liquor is increased, further the contact effect of the waste gas and the alkali liquor, the water and the acid liquor is improved, and the washing effect of the waste gas is improved.
Specifically, fixing base 5 inboard seted up with the corresponding annular 6 of crown plate 10, the 6 inner walls in annular are provided with a plurality of evenly distributed's roll support piece 13, through with the crown plate 10 outside embedding to annular 6 inside to utilize roll support piece 13 to provide the support, with the coefficient of friction that reduces between crown plate 10 and the fixing base 5, drive crown plate 10 that can be comparatively smooth when making waste gas act on first aviation baffle 4 rotates.
Specifically, the rolling support 13 is a ball embedded in the inner wall of the ring groove 6.
Specifically, external acid storage tank, external reservoir and external alkali storage tank are connected with corresponding ring plate 10 through the hose respectively for ring plate 10 when rotating, the hose can carry out the adaptability along with the rotation of ring plate 10 and change, guarantees supplying smoothly of acidizing fluid, water and alkali lye.
When the first air deflector 4 is to be moved out of the paint spraying range of the corresponding air inlet nozzle 3, the current electromagnetic valve can be closed, the other group of electromagnetic valves is opened, so that the waste gas is sprayed out through the other group of air inlet pipes 2 and the air inlet nozzle 3, the waste gas sprayed out through the air inlet nozzle 3 can act on the second air deflector 11, the second air deflector 11 is pushed to drive the annular plate 10 to rotate reversely, and the situation that the hose is bent and distorted due to the fact that the hose rotates in an overlarge range along with the annular plate 10 is avoided, and smooth feeding of acid liquor, water and alkali liquor is influenced.
Further, all be provided with choked flow subassembly 8 between pickling subassembly and the washing subassembly and between washing subassembly and the alkaline washing subassembly, through choked flow subassembly 8's setting, can prevent that the acidizing fluid that sprays from sneaking into the below water and the alkali lye that sprays, avoid influencing the normal washing of waste gas, prevent simultaneously that water from sneaking into the below alkali lye that sprays, cause the reducing of alkali lye concentration, influence the alkaline washing effect of waste gas.
Specifically, the choke assembly 8 includes a choke cover 15 having a tapered structure, the choke cover 15 is fixedly disposed on the corresponding link 7, a tapered end of the choke cover 15 is disposed upward, an air outlet 17 is disposed on the choke cover 15, and a baffle 16 corresponding to the air outlet 17 is disposed on an upper portion of the choke cover 15.
Through the arrangement of the flow blocking cover 15, the sprayed acid liquor, water and alkali liquor can be effectively prevented from being mixed, so that the normal washing of waste gas is influenced; the waste gas after alkaline washing floats upwards and is output from the air outlet 17 on the flow resisting cover 15 between the washing component and the alkaline washing component, so that the waste gas can smoothly float upwards from the position between the washing component and the corresponding ring plate 10 to realize the washing of the waste gas, and is output from the air outlet 17 on the flow resisting cover 15 between the pickling component and the washing component after the washing is finished and floats upwards from the position between the ring plates 10 corresponding to the pickling component to realize the pickling of the waste gas; through the setting of separation blade 16, can protect air outlet 17 to avoid acidizing fluid and water from air outlet 17 downward flow, avoid the mixture between acidizing fluid, water and the alkali lye.
In this embodiment, the upper portion of the box body 1 is further provided with an air outlet pipe 9, one end of the air outlet pipe 9, which is far away from the box body 1, is connected with an external finished product storage tank (not shown), and the finished product storage tank is used for collecting pure chloromethane gas formed after washing is completed.
Example 2
Referring to fig. 4, in the present embodiment, compared with embodiment 1, in the directional recovery device for methyl chloride in waste gas produced by maltol, sealing members 14 are disposed on the upper portions of the fixing bases 5 corresponding to the alkaline washing component and the water washing component, the bottom of the flow blocking cover 15 is attached to the upper portion of the sealing member 14, and by the arrangement of the sealing members 14, the sealing performance of the flow blocking cover 15 can be improved, so that the waste gas is prevented from being output from the lower edge of the flow blocking cover 15, and the waste gas cannot quickly float upwards between the upper ring plates 10, so that the washing effect of the waste gas is reduced.
In particular, the seal 14 is an annular projection.
The embodiment of the invention has the advantages of convenient operation and good washing effect of the chloromethane, and can greatly reduce energy consumption while realizing the directional recovery of the chloromethane, thereby saving the recovery cost of the chloromethane and improving the economic benefit.
Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.
Claims (5)
1. The utility model provides a directional recovery unit of moisture rejection formula maltol waste gas chloromethane, a serial communication port, including box (1), box (1) inside is that upper and lower distribution has set gradually the pickling subassembly, washes the subassembly and washes with alkaline the subassembly, pickling subassembly, washing subassembly and wash with alkaline subassembly structure the same, all include fixing base (5) and crown plate (10), fixing base (5) are annular structure fixed mounting in box (1) inner wall, crown plate (10) movable mounting be in fixing base (5) inboard, crown plate (10) inside cavity, a plurality of orifices (12) that the annular distributes are seted up to crown plate (10) inboard, it links to each other to loop through connecting rod (7) between crown plate (10) that pickling subassembly, washing subassembly and wash with alkaline the subassembly correspond, and ring plate (10) that pickling subassembly, washing subassembly and washing subassembly correspond respectively with external acid storage tank, The external water reservoir is connected with an external alkali storage pool corresponding to a pump, a plurality of first air deflectors (4) and a plurality of second air deflectors (11) are fixedly arranged at the bottom of a ring plate (10) corresponding to the alkali washing component, the plurality of first air deflectors (4) and the plurality of second air deflectors (11) are symmetrically distributed in a mirror image mode about the ring plate (10), and the plurality of first air deflectors (4) and the plurality of second air deflectors (11) are inclined to the diameter of the ring plate (10); two groups of air inlet nozzles (3) are symmetrically arranged at the bottom in the box body (1) and positioned at the outer sides of the first air deflector (4) and the second air deflector (11), one ends of the two groups of air inlet nozzles (3) are connected with an air inlet pipe (2), one end, far away from the air inlet nozzles (3), of the air inlet pipe (2) extends to the outside of the box body (1) and is connected with external air supply equipment, and an electromagnetic valve is arranged on the air inlet pipe (2);
the external acid storage pool, the external water storage pool and the external alkali storage pool are respectively connected with the corresponding annular plates (10) through hoses;
the fixing seat (5) is internally provided with an annular groove (6) corresponding to the annular plate (10), and the inner wall of the annular groove (6) is provided with a plurality of rolling supporting pieces (13) which are uniformly distributed.
2. The moisture rejection type maltol production waste gas methyl chloride directional recovery device as claimed in claim 1, wherein the rolling support members (13) are balls embedded in the inner wall of the ring groove (6).
3. The moisture-rejecting methyl chloride directional recovery device for waste gas produced in maltol production according to claim 1, wherein flow blocking assemblies (8) are arranged between the acid washing assembly and the water washing assembly and between the water washing assembly and the alkali washing assembly; the flow blocking component (8) comprises a flow blocking cover (15) of a conical structure, the flow blocking cover (15) is fixedly arranged on the corresponding connecting rod (7), the conical tip of the flow blocking cover (15) is arranged upwards, an air outlet (17) is formed in the flow blocking cover (15), and a blocking piece (16) corresponding to the air outlet (17) is arranged on the upper portion of the flow blocking cover (15).
4. The moisture-rejecting methyl chloride directional recovery device for waste gas produced in maltol production according to claim 3, wherein sealing elements (14) are arranged on the upper portions of the fixing seats (5) corresponding to the alkaline washing assembly and the water washing assembly, and the bottoms of the flow blocking covers (15) are attached to the upper portions of the sealing elements (14).
5. The moisture rejection maltol production waste gas methyl chloride directional recovery device according to claim 4, wherein the sealing member (14) is an annular protrusion.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010951410.XA CN112191075B (en) | 2020-09-11 | 2020-09-11 | Moisture-removing type device for directionally recovering methyl chloride in waste gas generated in production of maltol |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010951410.XA CN112191075B (en) | 2020-09-11 | 2020-09-11 | Moisture-removing type device for directionally recovering methyl chloride in waste gas generated in production of maltol |
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| CN112191075A CN112191075A (en) | 2021-01-08 |
| CN112191075B true CN112191075B (en) | 2022-06-14 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE3632214A1 (en) * | 1986-09-23 | 1988-04-07 | Gewerk Keramchemie | Apparatus for purifying exhaust air |
| NO332812B1 (en) * | 2009-03-13 | 2013-01-21 | Aker Clean Carbon As | Amine emission control |
| CN103044185B (en) * | 2012-12-24 | 2015-07-15 | 龙海市贝特利生物科技有限公司 | Method for recovering chloromethane from chloromethane-containing waste gas in maltol production |
| CN108144428A (en) * | 2017-03-15 | 2018-06-12 | 江苏新世纪江南环保股份有限公司 | A kind of method and device of ammonia process efficient removal gas sulphur oxide and dirt |
| CN211097911U (en) * | 2019-11-30 | 2020-07-28 | 山东友成生物科技有限公司 | Liquid chromatogram mobile phase waste liquid treatment device |
| CN111185091A (en) * | 2020-01-13 | 2020-05-22 | 江苏科技大学 | Desulfurization and dust removal integrated washing tower |
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