CN220918598U - Waste gas treatment device in formaldehyde production process - Google Patents
Waste gas treatment device in formaldehyde production process Download PDFInfo
- Publication number
- CN220918598U CN220918598U CN202322712574.9U CN202322712574U CN220918598U CN 220918598 U CN220918598 U CN 220918598U CN 202322712574 U CN202322712574 U CN 202322712574U CN 220918598 U CN220918598 U CN 220918598U
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- fixedly connected
- gear
- reciprocating screw
- production process
- treatment device
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- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 title claims abstract description 81
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 26
- 239000002912 waste gas Substances 0.000 title claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 230000008878 coupling Effects 0.000 claims description 14
- 238000010168 coupling process Methods 0.000 claims description 14
- 238000005859 coupling reaction Methods 0.000 claims description 14
- 238000004140 cleaning Methods 0.000 claims description 9
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 239000011324 bead Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 13
- 239000007787 solid Substances 0.000 description 11
- 239000002245 particle Substances 0.000 description 10
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 230000009471 action Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The utility model relates to the technical field of formaldehyde production, in particular to an exhaust gas treatment device in the formaldehyde production process, which comprises a shell, wherein an air pipe is fixedly connected to the top of the shell, exhaust pipes are fixedly connected to the two sides of the air pipe, an air inlet pipe is fixedly connected to the bottom of the shell coaxially, water tanks are fixedly connected to the two sides of the bottom of the shell, a main shaft is rotatably arranged in the air pipe, a wind shield is fixedly connected to the main shaft, a circular filter screen is sleeved on the main shaft, and the filter screen is rotatably arranged in the shell.
Description
Technical Field
The utility model relates to the technical field of formaldehyde production, in particular to an exhaust gas treatment device in the formaldehyde production process.
Background
The formaldehyde is a popular chemical product with wide application, simple production process and sufficient raw material supply. Is the trunk in the downstream product tree of methanol, and the annual output of the world is about 2500 ten thousand tons, and about 30 percent of methanol is used for producing formaldehyde. However, formaldehyde is an aqueous solution with a low concentration, and is not convenient for long-distance transportation from the economic point of view, so that factories are generally arranged near the main consumer market, and import and export trade is very little. The methanol oxidation method and the natural gas direct oxidation method are mainly adopted in industry, and a certain amount of waste gas can be generated in the production process in any production process.
Since the waste gas contains more than 20% of combustible gas, the waste gas produced by formaldehyde is usually directly sent to a tail gas boiler for treatment, however, when the waste gas is burnt in the tail gas boiler due to the fact that the waste gas contains a large amount of solid particles, a large amount of impurities are attached to the interior of the tail gas boiler, and the waste gas treatment quality is affected.
Disclosure of utility model
The utility model aims to solve the defect that the waste gas produced in formaldehyde production contains a large amount of solid particles in the prior art, and provides a waste gas treatment device in the formaldehyde production process.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
The utility model provides an exhaust treatment device in formaldehyde production process, includes the casing, the casing top rigid coupling has the tuber pipe, tuber pipe both sides rigid coupling has the blast pipe, the coaxial line rigid coupling of casing bottom has the intake pipe, the rigid coupling of casing bottom both sides has the water tank, rotatable installs the main shaft in the tuber pipe, the rigid coupling has the deep bead on the main shaft, the cover is equipped with annular filter screen on the main shaft, the rotatable installation of filter screen is in the casing.
Preferably, the motor is fixedly connected to the top of the air pipe coaxially, the output end of the motor is fixedly connected to the main shaft coaxially, the fan blades are fixedly connected to the main shaft, and the fan blades are located in the air pipe.
Preferably, the radial rotatable installation of casing has reciprocating screw, reciprocating screw one end coaxial line rigid coupling first gear, reciprocating screw other end coaxial line rigid coupling has the second gear, coaxial line rigid coupling has first face gear on the filter screen, first face gear and first gear phase-match, the rigid coupling has the second face gear on the deep bead, the second face gear with second gear phase-match.
Preferably, the reciprocating screw is provided with a cleaning structure to clean the filter screen and the wind shield, the cleaning structure comprises a support, a nut is fixedly connected to the support, the nut is in threaded connection with the reciprocating screw, a key slot is formed in the reciprocating screw, an inner spline tube is rotatably mounted on the support, the inner spline tube is slidably matched with the reciprocating screw, a first bevel gear is fixedly connected to the inner spline tube, rotating shafts are rotatably mounted on two opposite sides of the support, a hairbrush is fixedly connected to one end of the rotating shaft, a second bevel gear is fixedly connected to the other end of the rotating shaft, and the second bevel gear is matched with the first bevel gear.
Preferably, a sliding sleeve is fixedly connected on the support, a return-shaped sliding rod is slidably matched on the sliding sleeve, a cam is fixedly connected on the rotating shaft, a hammer is fixedly connected at one end of the sliding rod, the other end of the sliding rod abuts against the cam, a compression spring is sleeved on the sliding rod, and a vibration starting plate is fixedly connected on the support.
The utility model provides a waste gas treatment device in the formaldehyde production process, which has the beneficial effects that: the waste gas treatment device in the formaldehyde production process reduces the speed of the air flow by changing the cross section area of the waste gas flow and the obstruction of the wind shield to the air flow, and cleans out solid particles in the air flow under the action of gravity.
Drawings
Fig. 1 is a schematic structural diagram of an exhaust gas treatment device in a formaldehyde production process according to the present utility model.
Fig. 2 is a schematic diagram of the internal structure of a housing of an exhaust gas treatment device in a formaldehyde production process according to the present utility model.
Fig. 3 is a schematic diagram of an installation structure of a filter screen and a wind deflector of an exhaust gas treatment device in a formaldehyde production process according to the present utility model.
Fig. 4 is a partial enlarged view of fig. 2 of an exhaust gas treatment device in a formaldehyde production process according to the present utility model.
Fig. 5 is a schematic structural diagram of a bracket of an exhaust gas treatment device in a formaldehyde production process according to the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
Referring to fig. 1-3, an exhaust gas treatment device in formaldehyde production process comprises a shell 1, wherein an air pipe 2 is fixedly connected to the top of the shell 1, exhaust pipes 3 are fixedly connected to two sides of the air pipe 2, an air inlet pipe 4 is fixedly connected to the bottom of the shell 1 coaxially, a water tank 5 is fixedly connected to two sides of the bottom of the shell 1, a main shaft 7 is rotatably installed in the air pipe 2, a wind shield 11 is fixedly connected to the main shaft 7, a circular filter screen 9 is sleeved on the main shaft 7, the filter screen 9 is rotatably installed in the shell 1, a motor 6 is fixedly connected to the top of the air pipe 2 coaxially, an output end of the motor 6 is fixedly connected to the main shaft 7 coaxially, fan blades 8 are fixedly connected to the main shaft 7, and the fan blades 8 are located in the air pipe 2.
The waste gas generated by formaldehyde production is input into the shell 1 through the air inlet pipe 4, when the waste gas flows into the shell 1, the speed of the air flow can be reduced due to the sudden expansion of the cross section area of the air flow, at the moment, the solid particles in the shell 1 can be at a downward speed in the vertical direction under the action of the gravity of the waste gas, when the speed of the air flow is blocked by the wind shield 11 to a certain extent, the solid particles move downwards in the shell 1 and do not flow out together with the tail gas, the solid particles moving downwards are collected in the water tank 5 under the action of gravity, clean water is filled in the water tank 5, and the water tank 5 can be absorbed by the clean water, so that the treatment of the solid particles in the waste gas is completed.
In addition, the exhaust gas impinges on the windward side of the wind deflector 11, and a large amount of solid particulate matter is inevitably attached to the windward side of the wind deflector 11, and therefore, every time it is cleaned, its cleaning flow out is as follows:
The motor 6 is started, the motor 6 drives the main shaft 7 to rotate, the main shaft 7 rotates to drive the wind shield 11 to rotate, solid particles attached to the wind shield 11 can be separated from the wind shield 11 under the action of centrifugal force, and the solid particles fall into the water tank 5 under the action of gravity.
The fan blades 8 are driven to rotate in the rotation process of the main shaft 7, and the air in the shell 1 is pumped out by the rotation of the fan blades 8 and discharged from the exhaust pipe 3.
As shown in fig. 2-4, a reciprocating screw 13 is rotatably installed in the housing 1 in the radial direction, one end of the reciprocating screw 13 is coaxially and fixedly connected with a first gear 14, the other end of the reciprocating screw 13 is coaxially and fixedly connected with a second gear 15, a first end face gear 10 is coaxially and fixedly connected on the filter screen 9, the first end face gear 10 is matched with the first gear 14, a second end face gear 12 is fixedly connected on the wind shield 11, and the second end face gear 12 is matched with the second gear 15.
In the rotation process of the wind shield 11, the wind shield 11 can drive the second face gear 12 to rotate, the second face gear 12 rotates to drive the second gear 15 to rotate, the second gear 15 rotates to drive the reciprocating screw 13 to rotate, the reciprocating screw 13 rotates to drive the first gear 14 to rotate, the first gear 14 drives the first face gear 10 to rotate, the first face gear 10 drives the filter screen 9 to rotate, and impurities attached to the filter screen 9 are cleaned under the action of centrifugal force.
As shown in fig. 4-5, a cleaning structure is arranged on the reciprocating screw 13 to clean the filter screen 9 and the wind shield 11, the cleaning structure comprises a bracket 16, a nut 17 is fixedly connected on the bracket 16, the nut 17 is in threaded connection with the reciprocating screw 13, a key slot is formed in the reciprocating screw 13, an internal spline tube 18 is rotatably arranged on the bracket 16, the internal spline tube 18 is slidably matched with the reciprocating screw 13, a first bevel gear 19 is fixedly connected on the internal spline tube 18, rotating shafts 21 are rotatably arranged on two opposite sides of the bracket 16, a hairbrush 22 is fixedly connected at one end of each rotating shaft 21, a second bevel gear 20 is fixedly connected at the other end of each rotating shaft, and the second bevel gear 20 is matched with the first bevel gear 19.
The reciprocating screw 13 drives the nut 17 to do linear reciprocating motion in the rotating process, the nut seat 17 drives the bracket 16 to synchronously move, and the bracket 16 drives the hairbrush 22 to do linear reciprocating motion through the rotating shaft 21, so that the leeward surface of the wind shield 11 and the windward surface of the filter screen 9 are cleaned.
In the process of the brush 22 doing linear reciprocating motion, the reciprocating screw 13 can also drive the internal spline tube 18 to rotate, the internal spline tube 18 drives the first bevel gear 19 to rotate, the first bevel gear 19 rotates to drive the second bevel gear 20 to rotate, the second bevel gear 20 rotates to drive the rotating shaft 21 to rotate, the rotating shaft 21 rotates to drive the brush 22 to rotate, and the brush 22 rotates to improve the cleaning quality of the leeward side of the wind shield 11 and the windward side of the filter screen 9.
As shown in fig. 5, a sliding sleeve 23 is fixedly connected to the support 16, a slide bar 24 in a shape of a loop is slidably matched with the sliding sleeve 23, a cam 25 is fixedly connected to the rotating shaft 21, one end of the slide bar 24 is fixedly connected with a hammer 28, the other end of the slide bar abuts against the cam 25, a compression spring 27 is sleeved on the slide bar 24, and a vibration starting plate 26 is fixedly connected to the support 16.
In the rotation process of the rotating shaft 21, the rotating shaft 21 also drives the cam 25 to rotate, the sliding rod 24 is driven to slide in the sliding sleeve 23 in the rotation process of the cam 25, the sliding rod 24 after sliding is reset under the elastic force of the compression spring 27, and accordingly the hammer 28 is driven to continuously hammer the vibration starting plate 26, the vibration starting plate 26 vibrates, the vibration is transmitted to the filter screen 9 and the wind shield 11 through the hairbrush 22, and solid particles attached to the surfaces of the filter screen 9 and the wind shield 11 are vibrated to fall.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (5)
1. The utility model provides an exhaust treatment device in formaldehyde production process, its characterized in that, including casing (1), casing (1) top rigid coupling has tuber pipe (2), tuber pipe (2) both sides rigid coupling has blast pipe (3), casing (1) bottom coaxial line rigid coupling has intake pipe (4), casing (1) bottom both sides rigid coupling has water tank (5), rotatable main shaft (7) of installing in tuber pipe (2), the rigid coupling has deep bead (11) on main shaft (7), the cover is equipped with annular filter screen (9) on main shaft (7), filter screen (9) rotatable install in casing (1).
2. The waste gas treatment device in the formaldehyde production process according to claim 1, wherein a motor (6) is coaxially and fixedly connected to the top of the air pipe (2), the output end of the motor (6) is coaxially and fixedly connected with a main shaft (7), fan blades (8) are fixedly connected to the main shaft (7), and the fan blades (8) are located in the air pipe (2).
3. The waste gas treatment device in the formaldehyde production process according to claim 2, wherein a reciprocating screw (13) is rotatably installed in the shell (1) in the radial direction, one end of the reciprocating screw (13) is fixedly connected with a first gear (14) in a coaxial line, the other end of the reciprocating screw (13) is fixedly connected with a second gear (15) in a coaxial line, a first end face gear (10) is fixedly connected on the filter screen (9) in a coaxial line, the first end face gear (10) is matched with the first gear (14), a second end face gear (12) is fixedly connected on the wind shield (11), and the second end face gear (12) is matched with the second gear (15).
4. A waste gas treatment device in formaldehyde production process according to claim 3, characterized in that the reciprocating screw (13) is provided with a cleaning structure for cleaning the filter screen (9) and the wind shield (11), the cleaning structure comprises a support (16), a nut (17) is fixedly connected to the support (16), the nut (17) is screwed on the reciprocating screw (13), a key slot is formed in the reciprocating screw (13), an inner spline tube (18) is rotatably mounted on the support (16), the inner spline tube (18) is slidably matched on the reciprocating screw (13), a first bevel gear (19) is fixedly connected to the inner spline tube (18), rotary shafts (21) are rotatably mounted on two opposite sides of the support (16), a hairbrush (22) is fixedly connected to one end of each rotary shaft (21), a second bevel gear (20) is fixedly connected to the other end of each rotary shaft, and the second bevel gear (20) is matched with the first bevel gear (19).
5. The waste gas treatment device in the formaldehyde production process according to claim 4, wherein a sliding sleeve (23) is fixedly connected on the support (16), a sliding rod (24) in a shape of a loop is slidably matched on the sliding sleeve (23), a cam (25) is fixedly connected on the rotating shaft (21), a hammer head (28) is fixedly connected at one end of the sliding rod (24), the other end of the sliding rod abuts against the cam (25), a compression spring (27) is sleeved on the sliding rod (24), and a vibration starting plate (26) is fixedly connected on the support (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322712574.9U CN220918598U (en) | 2023-10-10 | 2023-10-10 | Waste gas treatment device in formaldehyde production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322712574.9U CN220918598U (en) | 2023-10-10 | 2023-10-10 | Waste gas treatment device in formaldehyde production process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220918598U true CN220918598U (en) | 2024-05-10 |
Family
ID=90963268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322712574.9U Active CN220918598U (en) | 2023-10-10 | 2023-10-10 | Waste gas treatment device in formaldehyde production process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220918598U (en) |
-
2023
- 2023-10-10 CN CN202322712574.9U patent/CN220918598U/en active Active
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