CN112246067A - Membrane separation organic waste gas treatment equipment - Google Patents
Membrane separation organic waste gas treatment equipment Download PDFInfo
- Publication number
- CN112246067A CN112246067A CN202011071994.8A CN202011071994A CN112246067A CN 112246067 A CN112246067 A CN 112246067A CN 202011071994 A CN202011071994 A CN 202011071994A CN 112246067 A CN112246067 A CN 112246067A
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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
- B01D53/002—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 condensation
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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
- B01D53/005—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 heat treatment
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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
- B01D53/22—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 diffusion
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- Chemical & Material Sciences (AREA)
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- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a membrane separation organic waste gas treatment device which structurally comprises an isolation tower, a through pipe, a membrane separation tower and an impurity removal cabinet, wherein one end of the through pipe is embedded and fixed on the right wall of the isolation tower, the membrane separation tower is connected to the other end of the through pipe in a welding manner, and the impurity removal cabinet is arranged on the front side of the bottom of the membrane separation tower in a movable clamping manner, so that the membrane separation organic waste gas treatment device has the beneficial effects that: the hot plate heats membrane separation tower inside, make the moisture in the organic waste gas be heated and produce organic vapor and adsorb the pollutant, get into the condenser under the flow of air current in, the condensation piece forms the drop of water with the organic vapor cooling, thereby with pollutant and air separation, avoid causing the pollution to external air, make air and organic vapor upwards promote condensation plate extrusion stopper under the flow of air current, make the stopper roll on the condensation plate surface, make the stopper have elasticity simultaneously under the elasticity of spring, thereby make the condensation plate and shake from top to bottom, be convenient for shake down with the drop of water that remains in the condensation plate bottom.
Description
Technical Field
The invention relates to the field of membrane separation equipment, in particular to membrane separation organic waste gas treatment equipment.
Background
The membrane separation is a novel separation technology which takes a selective permeation membrane as a separation medium and separates, purifies and concentrates a mixture under the pushing of external force, a large amount of organic waste gas can be generated in the industrial production process, organic waste gas treatment equipment through membrane separation utilizes the difference of the capacities of organic steam and air permeation membranes, the organic waste gas is treated, and the air pollution is avoided.
At present, when organic waste gas is heated into organic steam, pollutants carried in the organic waste gas contact with water vapor in the steam to generate viscosity and float upwards along with the steam, so that part of pollutants enter a membrane separation unit to block the circulation of the organic steam, the separation of the organic steam and air is influenced, and part of the organic steam is discharged along with the air.
Disclosure of Invention
The invention provides a membrane separation organic waste gas treatment device, aiming at the defects that when organic waste gas is heated into organic steam, pollutants carried in the organic waste gas are contacted with water vapor in the steam to generate viscosity and float upwards along with the steam, so that part of pollutants enter a membrane separation unit to block the circulation of the organic steam, the separation of the organic steam and air is influenced, and part of organic steam is discharged along with the air.
The invention is realized by the following technical scheme: the utility model provides a membrane separation organic waste gas treatment equipment, its structure includes isolation tower, siphunculus, membrane separation tower, edulcoration cabinet, siphunculus one end inlays admittedly in isolation tower right wall, the membrane separation tower passes through welded connection in the siphunculus other end, the edulcoration cabinet is installed in membrane separation tower bottom front side through movable block, the membrane separation tower includes hot plate, condenser, locating piece, membrane separation unit, the hot plate inlays admittedly in membrane separation tower inner wall respectively with the condenser, the condenser is located directly over the hot plate, the locating piece left end is installed in membrane separation tower right wall through the cooperation, membrane separation unit one end inlays admittedly in the locating piece left side, and the membrane separation unit other end arranges membrane separation tower left inner wall in, the hot plate all passes through the electric control with the condenser, and the condenser top is the arc upwards protruding to membrane separation unit has five.
Further, the condenser includes condenser plate, spacing strip, sponge piece, stopper, fixed block, the condenser plate passes through welded connection and controls the inner wall in the condenser, spacing strip inlays admittedly between the inner wall about condenser plate upper surface and the condenser, sponge piece and condenser upper surface structure as an organic whole, the stopper passes through the activity block to be connected between condenser plate upper surface and sponge piece bottom, the fixed block upper surface inlays admittedly in sponge piece bottom, the condenser plate is two boards of perk upwards and constitutes, and the elasticity of spacing strip equals with the gravity of condenser plate to the contact surface perpendicular to sponge piece of fixed block and stopper.
Further say, the condensing panel includes cold congelation piece, cooling head, push pedal, commentaries on classics piece, the condensation piece inlays admittedly in the condensing panel inside, the cooling head passes through welded connection in the condensing panel left end, the push pedal inlays admittedly in the condensing panel lower surface, change the piece and pass through bolted connection in the condensing panel right-hand member, the cooling head is the hemisphere form, and the inside fretwork of push pedal is sunken upwards to push pedal left wall slope right side wall is perpendicular simultaneously.
Further say that, the cooling head includes fixed plate, baffle, cooling hole, the fixed plate inlays admittedly in the cooling head front side, the baffle passes through welded connection in inner wall about the cooling head, the cooling hole inlays to be located inside the fixed plate, the baffle is arc kickup, and the cooling hole comprises six copper boards.
Furthermore, the limiting block is composed of supporting blocks, clamping plates, supporting columns and fixing rods, wherein two ends of each clamping plate are connected between the two supporting blocks in a welding mode, one end of each supporting column is fixedly embedded into the inner side of the corresponding clamping plate, the upper surface and the lower surface of each fixing rod are welded to the other end of each supporting column, the left side and the right side of each fixing rod are fixedly embedded between the two supporting blocks, each clamping plate is an arc-shaped rubber plate, and each fixing rod is a cylindrical cylinder.
Furthermore, the supporting block comprises a pressing block, a limiting spring and a supporting plate, one end of the pressing block is embedded and fixed on the inner wall of the supporting block, one side of the limiting spring is welded with the other end of the pressing block, the supporting plate is installed on the other side of the limiting spring, the supporting plate is connected to the periphery of the fixing rod through welding, the inner wall of the supporting block is curved, and eight pressing blocks, eight limiting springs and eight supporting plates are arranged respectively.
Furthermore, the limiting spring comprises a spring, a positioning plate and a limiting plate, wherein the spring is vertically welded on the body and mind inner wall of the limiting spring, the positioning plate is installed in the middle section of the spring in a matching mode, the limiting plate is embedded on the upper surface and the lower surface of the positioning plate, the elastic force of the spring is greater than the gravity of the pressing block and the supporting plate, and the left wall and the right wall of the limiting spring are made of bent rubber materials.
Advantageous effects
Compared with the prior art, the membrane separation organic waste gas treatment equipment has the following advantages:
1. the invention has the beneficial effects that: the hot plate heats membrane separation tower inside, makes the moisture in the organic waste gas be heated and produces organic vapor adsorption pollutant, gets into the condenser under the flow of air current in, the condensation piece forms the drop of water with organic vapor cooling to with pollutant and air separation, avoid causing the pollution to external air.
2. The invention has the beneficial effects that: make air and organic vapour upwards promote the condensation plate extrusion stopper under the flow of air current, make the stopper roll on the condensation plate surface, make the stopper have elasticity under the elasticity of spring simultaneously to make the condensation plate and shake from top to bottom, be convenient for will remain the drop of water in the condensation plate bottom and shake down.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic structural diagram of a membrane separation organic waste gas treatment device of the present invention.
FIG. 2 is an enlarged internal view of a membrane separation column according to the present invention.
Fig. 3 is an enlarged internal view of the condenser according to the present invention.
FIG. 4 is a front view of an enlarged structure of the condensing plate of the present invention.
Fig. 5 is a left enlarged view of the cooling head according to the present invention.
Fig. 6 is a right-view enlarged structural schematic diagram of the limiting block of the present invention.
FIG. 7 is a right enlarged view of the support block of the present invention.
Fig. 8 is an enlarged view of the inner structure of the limit spring according to the present invention.
In the figure: the device comprises an isolation tower 1, a through pipe 2, a membrane separation tower 3, an impurity removal cabinet 4, a heating plate 31, a condenser 32, a positioning block 33, a membrane separation unit 34, a condensation plate 321, a limiting strip 322, a sponge block 323, a limiting block 324, a fixing block 325, a condensation block a1, a cooling head a2, a push plate a3, a rotating block a4, a fixing plate a21, a baffle a22, a cooling hole a23, a supporting block b1, a clamping plate b2, a supporting column b3, a fixing rod b4, a pressing block b11, a limiting spring b12, a supporting plate b13, a spring m1, a positioning plate m2 and a limiting plate m 3.
Detailed Description
In order to make the technical means, the original characteristics, the achieved purposes and the effects of the invention easy to understand, the following description and the accompanying drawings further illustrate the preferred embodiments of the invention.
Please refer to fig. 1-8:
example 1:
the invention provides a membrane separation organic waste gas treatment device which structurally comprises an isolation tower 1, a through pipe 2, a membrane separation tower 3 and an impurity removal cabinet 4, wherein one end of the through pipe 2 is fixedly embedded on the right wall of the isolation tower 1, the membrane separation tower 3 is connected to the other end of the through pipe 2 in a welding mode, the impurity removal cabinet 4 is installed on the front side of the bottom of the membrane separation tower 3 in a movable clamping mode, the membrane separation tower 3 comprises a heating plate 31, a condenser 32, a positioning block 33 and a membrane separation unit 34, the heating plate 31 and the condenser 32 are fixedly embedded on the inner wall of the membrane separation tower 3 respectively, the condenser 32 is located right above the heating plate 31, the left end of the positioning block 33 is installed on the right wall of the membrane separation tower 3 in a matching mode, one end of the membrane separation unit 34 is fixedly embedded on the left side of the positioning block 33, the other end of the membrane separation unit 34, the top of the condenser 32 is arc-shaped and protrudes upwards, and the membrane separation unit 34 has five layers, which is beneficial to organic waste gas to be heated by the heating plate 31 to form organic vapor to adsorb pollutants, and the organic waste gas is cooled into water drops by the condenser 32 to be separated from air.
In the figure, the condenser 32 comprises a condensing plate 321, a limiting strip 322, a sponge block 323, a limiting block 324 and a fixing block 325, the condensing plate 321 is connected to the left and right inner walls of the condenser 32 by welding, the position-limiting strip 322 is embedded between the upper surface of the condensing plate 321 and the left and right inner walls of the condenser 32, the sponge block 323 and the upper surface of the condenser 32 are integrated, the limit block 324 is connected between the upper surface of the condensing plate 321 and the bottom of the sponge block 323 through movable clamping, the upper surface of the fixing block 325 is embedded and fixed at the bottom of the sponge block 323, the condensing plate 321 is composed of two plates which are tilted upwards, the elasticity of the limiting strip 322 is equal to the gravity of the condensing plate 321, and the contact surface of the fixed block 325 and the limiting block 324 is perpendicular to the sponge block 323, which is beneficial to cooling the water vapor in the organic vapor into water drops when the organic vapor passes through the condensing plate 321, so that the water drops absorb pollutants and flow downwards to the impurity removing cabinet 4 along the inclined condensing plate 321.
In the figure, the condensing plate 321 comprises a cold block a1, a cooling head a2, a push plate a3 and a rotating block a4, the cold block a1 is embedded inside the condensing plate 321, the cooling head a2 is connected to the left end of the condensing plate 321 through welding, the push plate a3 is embedded on the lower surface of the condensing plate 321, the rotating block a4 is connected to the right end of the condensing plate 321 through bolts, the cooling head a2 is semi-spherical, the push plate a3 is hollow upwards, the left wall of the push plate a3 is inclined, the right wall of the push plate a3 is vertical, and the cooling area of the condensing plate 321 to organic vapor is increased through the push plate a3 by the aid of the organic waste gas.
In the figure, the cooling head a2 comprises a fixing plate a21, a baffle a22 and a cooling hole a23, the fixing plate a21 is embedded in the front side of the cooling head a2, the baffle a22 is connected to the left and right inner walls of the cooling head a2 through welding, the cooling hole a23 is embedded in the fixing plate a21, the baffle a22 is bent upwards in an arc shape, and the cooling hole a23 is composed of six copper plates, so that the organic vapor is further cooled when air passes between the two cooling heads a 2.
The specific principle of the embodiment is as follows: a large amount of organic waste gas generated in the industrial production process is connected into an isolation tower 1 to isolate larger impurities, then the organic waste gas is input into a membrane separation tower 3 through a through pipe 2 to be subjected to membrane separation treatment, at the moment, a heating plate 31 and a condenser 32 in the membrane separation tower 3 are electrically controlled, the heating plate 31 heats the inside of the membrane separation tower 3, moisture in the organic waste gas is heated to generate organic steam, the organic steam adsorbs pollutants in the organic waste gas and floats upwards under the flowing of airflow to enter the condenser 32, air and the organic steam push a condensing plate 321 upwards in the condenser 32 through a plate a3 to enable the condensing plate 321 to extrude a limiting strip 322, the organic steam is cooled under the action of a condensing block a1 to form water beads and carry the pollutants to flow downwards along the inner wall of the membrane separation tower 3 to an impurity removal cabinet 4, and then the pollutants are separated from the air, to avoid polluting the outside air, the air is further filtered through the sponge block 323 at the top of the condenser 32 and then purified through the membrane separation unit 34, so as to prevent the fouling from being blocked in the membrane separation unit 34.
Example 2:
in the figure, the condenser 32 comprises a condensing plate 321, a limiting strip 322, a sponge block 323, a limiting block 324 and a fixing block 325, the condensing plate 321 is connected to the left and right inner walls of the condenser 32 by welding, the position-limiting strip 322 is embedded between the upper surface of the condensing plate 321 and the left and right inner walls of the condenser 32, the sponge block 323 and the upper surface of the condenser 32 are integrated, the limit block 324 is connected between the upper surface of the condensing plate 321 and the bottom of the sponge block 323 through movable clamping, the upper surface of the fixing block 325 is embedded and fixed at the bottom of the sponge block 323, the condensing plate 321 is composed of two plates which are tilted upwards, the elasticity of the limiting strip 322 is equal to the gravity of the condensing plate 321, and the contact surface of the fixed block 325 and the limiting block 324 is perpendicular to the sponge block 323, which is beneficial to cooling the water vapor in the organic vapor into water drops when the organic vapor passes through the condensing plate 321, so that the water drops absorb pollutants and flow downwards to the impurity removing cabinet 4 along the inclined condensing plate 321.
In the figure, the limiting block 324 is composed of a supporting block b1, a clamping plate b2, a supporting column b3 and a fixing rod b4, two ends of the clamping plate b2 are connected between the two supporting blocks b1 through welding, one end of the supporting column b3 is embedded inside the clamping plate b2, the upper surface and the lower surface of the fixing rod b4 are welded with the other end of the supporting column b3, the left side and the right side of the fixing rod b4 are embedded between the two supporting blocks b1, the clamping plate b2 is an arc-shaped rubber plate, and the fixing rod b4 is a cylindrical tube, so that the limiting block 324 is favorably mounted on the upper surface of the condensation plate 321 through the clamping plate b2, and.
In the figure, the supporting block b1 comprises a pressing block b11, a limiting spring b12 and a supporting plate b13, one end of the pressing block b11 is embedded in the inner wall of the supporting block b1, one side of the limiting spring b12 is welded with the other end of the pressing block b11, the supporting plate b13 is installed on the other side of the limiting spring b12, the supporting plate b13 is connected to the periphery of the fixing rod b4 through welding, the inner wall of the supporting block b1 is curved, eight pressing blocks b11, eight limiting springs b12 and eight supporting plates b13 are arranged, the inner wall of the supporting block b1 is supported through the pressing block b11, the limiting spring b12 and the supporting plate b13, and the deformation of the supporting block b.
In the figure, limiting spring b12 includes spring m1, locating plate m2, limiting plate m3, spring m1 welds perpendicularly in limiting spring b12 body and mind inner wall, locating plate m2 cooperation is installed in spring m1 middle section, limiting plate m3 inlays and fixes in locating plate m2 upper and lower surface, the elasticity of spring m1 is greater than the gravity of briquetting b11 and backup pad b13, and two walls about limiting spring b12 are crooked rubber material, do benefit to improving the elasticity of limiting spring b12, make spring m1 support briquetting b11 and backup pad b13 respectively to both sides, improve the stability of backup pad b 1.
The specific principle of the embodiment is as follows: under the flowing of the air flow, the air and the organic vapor push the condensation plate 321 upwards through the plate a3 in the condenser 32, at this time, the condensation plate 321 pushes the limiting block 324 upwards, so that the limiting block 324 rolls on the surface of the condensation plate 321 through the clamping plate b2 inside the supporting block b1, the pressing block b11 inside the supporting block b1 is pressed to the limiting spring b12, the spring m1 pushes the pressing block b11 and the supporting plate b13 towards two sides respectively under the elastic force of the spring m1, so that the limiting block 324 is supported by the limiting spring b12 to avoid the deformation of the limiting block 324, and the limiting block 324 has elasticity, so that the condensation plate 321 can shake up and down under the impact of the air flow and the elastic force of the limiting block 324, and the water drops remained at the bottom of the condensation plate 321 are.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
Claims (7)
1. The utility model provides a membrane separation organic waste gas treatment equipment, its structure includes isolation tower (1), siphunculus (2), membrane separation tower (3), edulcoration cabinet (4), siphunculus (2) one end is inlayed in isolation tower (1) right wall, membrane separation tower (3) are through welded connection in siphunculus (2) other end, edulcoration cabinet (4) are installed in membrane separation tower (3) bottom front side through movable block, its characterized in that:
membrane separation tower (3) are including hot plate (31), condenser (32), locating piece (33), membrane separation unit (34), hot plate (31) and condenser (32) inlay respectively admittedly in membrane separation tower (3) inner wall, condenser (32) are located directly over hot plate (31), install in membrane separation tower (3) right wall through the cooperation locating piece (33) left end, membrane separation unit (34) one end is inlayed admittedly in locating piece (33) left side, and membrane separation unit (34) other end arranges membrane separation tower (3) left inner wall in.
2. The membrane separation organic waste gas treatment device according to claim 1, characterized in that: condenser (32) include condensing plate (321), spacing (322), sponge piece (323), stopper (324), fixed block (325), inner wall about condensing plate (321) passes through welded connection in condenser (32), spacing (322) are embedded and are fixed between inner wall about condensing plate (321) upper surface and condenser (32), sponge piece (323) and condenser (32) upper surface formula structure as an organic whole, stopper (324) are connected between condensing plate (321) upper surface and sponge piece (323) bottom through the activity block, fixed block (325) upper surface is embedded and is fixed in sponge piece (323) bottom.
3. The membrane separation organic waste gas treatment device according to claim 2, characterized in that: the condensing plate (321) comprises a cold block (a1), a cooling head (a2), a push plate (a3) and a rotary block (a4), the cold block (a1) is embedded inside the condensing plate (321), the cooling head (a2) is connected to the left end of the condensing plate (321) through welding, the push plate (a3) is embedded on the lower surface of the condensing plate (321), and the rotary block (a4) is connected to the right end of the condensing plate (321) through bolts.
4. The membrane separation organic waste gas treatment device according to claim 3, characterized in that: the cooling head (a2) comprises a fixing plate (a21), a baffle (a22) and a cooling hole (a23), wherein the fixing plate (a21) is embedded in the front side of the cooling head (a2), the baffle (a22) is connected to the left inner wall and the right inner wall of the cooling head (a2) through welding, and the cooling hole (a23) is embedded in the fixing plate (a 21).
5. The membrane separation organic waste gas treatment device according to claim 1, characterized in that: the limiting block (324) is composed of a supporting block (b1), a clamping plate (b2), a supporting column (b3) and a fixing rod (b4), two ends of the clamping plate (b2) are connected between the two supporting blocks (b1) through welding, one end of the supporting column (b3) is fixedly embedded in the inner side of the clamping plate (b2), the upper surface and the lower surface of the fixing rod (b4) are welded with the other end of the supporting column (b3), and the left side and the right side of the fixing rod (b4) are fixedly embedded between the two supporting blocks (b 1).
6. The membrane separation organic waste gas treatment device according to claim 5, characterized in that: the supporting block (b1) comprises a pressing block (b11), a limiting spring (b12) and a supporting plate (b13), one end of the pressing block (b11) is embedded in the inner wall of the supporting block (b1), one side of the limiting spring (b12) is welded with the other end of the pressing block (b11), the supporting plate (b13) is installed on the other side of the limiting spring (b12), and the supporting plate (b13) is connected to the periphery of the fixing rod (b4) through welding.
7. The membrane separation organic waste gas treatment device according to claim 6, characterized in that: spacing spring (b12) include spring (m1), locating plate (m2), limiting plate (m3), spring (m1) vertical welding is in spacing spring (b12) body and mind inner wall, spring (m1) middle section is installed in locating plate (m2) cooperation, limiting plate (m3) are inlayed and are fixed in locating plate (m2) upper and lower surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011071994.8A CN112246067A (en) | 2020-10-09 | 2020-10-09 | Membrane separation organic waste gas treatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011071994.8A CN112246067A (en) | 2020-10-09 | 2020-10-09 | Membrane separation organic waste gas treatment equipment |
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| Publication Number | Publication Date |
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| CN112246067A true CN112246067A (en) | 2021-01-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011071994.8A Withdrawn CN112246067A (en) | 2020-10-09 | 2020-10-09 | Membrane separation organic waste gas treatment equipment |
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| CN (1) | CN112246067A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113400928A (en) * | 2021-06-28 | 2021-09-17 | 徐工集团工程机械股份有限公司科技分公司 | Novel anti-pollution breathing of oil tank device |
| CN113464447A (en) * | 2021-07-31 | 2021-10-01 | 新界泵业（江苏）有限公司 | Water-steam separation type circulating pump |
-
2020
- 2020-10-09 CN CN202011071994.8A patent/CN112246067A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113400928A (en) * | 2021-06-28 | 2021-09-17 | 徐工集团工程机械股份有限公司科技分公司 | Novel anti-pollution breathing of oil tank device |
| CN113464447A (en) * | 2021-07-31 | 2021-10-01 | 新界泵业（江苏）有限公司 | Water-steam separation type circulating pump |
| CN113464447B (en) * | 2021-07-31 | 2022-01-11 | 新界泵业（江苏）有限公司 | Water-steam separation type circulating pump |
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Application publication date: 20210122 |