CN107789946B - Waste gas recovery and purification system of printing machine - Google Patents
Waste gas recovery and purification system of printing machine Download PDFInfo
- Publication number
- CN107789946B CN107789946B CN201711241510.8A CN201711241510A CN107789946B CN 107789946 B CN107789946 B CN 107789946B CN 201711241510 A CN201711241510 A CN 201711241510A CN 107789946 B CN107789946 B CN 107789946B
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- CN
- China
- Prior art keywords
- waste gas
- sedimentation tank
- printing machine
- porous layer
- cooling shell
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- 239000002912 waste gas Substances 0.000 title claims abstract description 48
- 238000007639 printing Methods 0.000 title claims abstract description 24
- 238000011084 recovery Methods 0.000 title claims abstract description 12
- 238000000746 purification Methods 0.000 title claims abstract description 9
- 238000001816 cooling Methods 0.000 claims abstract description 34
- 238000010438 heat treatment Methods 0.000 claims abstract description 34
- 238000004062 sedimentation Methods 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000002184 metal Substances 0.000 claims abstract description 19
- 239000002245 particle Substances 0.000 claims abstract description 15
- 238000001179 sorption measurement Methods 0.000 claims abstract description 6
- 239000013049 sediment Substances 0.000 claims description 12
- 238000009833 condensation Methods 0.000 claims description 4
- 230000005494 condensation Effects 0.000 claims description 4
- 239000007789 gas Substances 0.000 abstract description 25
- 239000003595 mist Substances 0.000 abstract description 5
- 238000004064 recycling Methods 0.000 abstract description 3
- 238000000926 separation method Methods 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract description 2
- 238000009736 wetting Methods 0.000 abstract 1
- 231100000614 poison Toxicity 0.000 description 5
- 239000003440 toxic substance Substances 0.000 description 5
- 239000007921 spray Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000007667 floating Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
Classifications
-
- 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
- B01D53/02—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 adsorption, e.g. preparative gas chromatography
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2247/00—Details relating to the separation of dispersed particles from gases, air or vapours by liquid as separating agent
- B01D2247/04—Regenerating the washing fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/14—Gaseous waste or fumes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a waste gas recovery and purification system of a printing machine, which comprises an air suction device, a heat treatment device, a cooling device and a sedimentation tank, wherein a preheating silk screen, a large particle adsorption layer and a porous layer are sequentially arranged in a heating outer cylinder from bottom to top, a plurality of thin-wall metal balls are piled on the porous layer, a high-temperature heater is arranged above the porous layer, an atomizer is arranged at the inner top of a cooling shell, a row of condensing plates is arranged in the cooling shell, and the sedimentation tank is positioned below the cooling shell. Compared with the prior art, the waste gas recycling and purifying system of the printing machine, provided by the invention, has the advantages that the air suction device sucks the waste gas of the printing machine into the heating outer cylinder, the waste gas is preheated, filtered and fully combusted at high temperature, then enters the cooling shell, the high-temperature gas contacts with water mist for wetting, finally, the gas with the moisture meets a low-temperature condensing plate, liquefied water drops into a sedimentation tank, the water drops are subjected to solid-liquid separation in the sedimentation tank, and the whole system is more sufficient and thorough in treatment of waste gas and is more environment-friendly.
Description
Technical Field
The invention relates to a waste gas recycling and purifying system of a printing machine, and belongs to the technical field of environment-friendly printing equipment.
Background
In the working process of the printing machine, more waste gas can be discharged, and the waste gas can lead to bad working environment and influence on air quality when being diffused into a production workshop, so that the health of workshop workers is seriously influenced. At present, a plurality of workshops are provided with exhaust fans, so that the exhaust gas generated in the workshops can be rapidly discharged, the way eliminates the waste gas in the workshop to a certain extent, but on one hand, the waste gas is not thoroughly discharged, and on the other hand, the direct discharge of the waste gas can pollute the environment. In order to avoid that exhaust gases generated during the operation of the printing machine pollute the shop air, in many of today's printers, an exhaust hood is installed in a closed state, and exhaust gas is exhausted to the outside of the workshop through the exhaust hood.
For example, chinese patent publication No. CN200977524Y discloses a gas collecting hood for a printing press, which comprises a gas collecting hood body and a fan, wherein the gas collecting hood body comprises a closed box body composed of a horn hood and a rectangular housing, the horn hood is arranged above the rectangular housing, and the fan is arranged at the upper part of the horn hood. The waste gas of the printing machine is directly discharged outdoors through the gas collecting hood, so that the waste gas can be prevented from polluting workshop environment, but the waste gas directly discharged outdoors can pollute the environment.
In another example, the patent No. 201520464890.1 discloses a totally-enclosed waste gas recovery device for a printing machine, which aims to solve the problems that waste gas discharged by the printing machine not only pollutes workshop air to influence the health of workers, but also is directly discharged to the outdoor polluted environment. The invention comprises a gas collecting hood, a spray tower, a photoelectric waste gas processor and an exhaust chimney, wherein the gas collecting hood is in closed connection with the upper end of a printing machine, the lower end of the spray tower is connected with an air inlet pipeline, the upper end of the gas collecting hood is communicated with the air inlet pipeline through a pipeline, the upper end of the spray tower is connected with a connecting pipeline which is communicated with the photoelectric waste gas processor, an air outlet pipeline is connected between the photoelectric waste gas processor and the exhaust chimney, an exhaust fan is arranged on the air inlet pipeline, and a water mist spraying mechanism is arranged in the spray tower close to the upper end; the exhaust gas recovery device cannot sufficiently treat all ink particles in the exhaust gas, and substances harmful to the environment remain in the discharged gas.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a waste gas recovery and purification system of a printing machine, which aims at the defects of the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a printing machine waste gas recovery clean system, includes getter device, heat treatment device, cooling device and sedimentation tank, heat treatment device is located the getter device top, and pipe connection between getter device and the heat treatment device, heat treatment device includes the heating urceolus, preheating silk screen, large granule adsorbed layer and porous layer have been set gradually by supreme down in the heating urceolus, pile up a plurality of thin wall metal balls on the porous layer, the porous layer top is provided with the high temperature heater to thin wall metal ball high temperature heating, through pipe connection between the position on cooling device and the position on the heat treatment device, cooling device includes the cooling shell, the top is provided with the atomizer in the cooling shell, be provided with one row of condensation plate in the cooling shell, the bottom of cooling shell is the funnel, the sedimentation tank is located the below of funnel.
As a further preferable scheme, the high-temperature heater is provided with a plurality of heat conducting rods towards the direction of the porous layer, and the heat conducting rods are inserted into a plurality of stacked thin-wall metal balls.
As a further preferable scheme, the condensing plate is of an S-shaped structure.
As a further preferable scheme, the sedimentation tank is provided with a circulating pipeline, the circulating pipeline is provided with a water pump, one end of the circulating pipeline is communicated with the position of the water surface of the sedimentation tank, and the other end of the circulating pipeline is connected with an atomizer.
As a further preferable scheme, a sediment storage plate is arranged at the bottom of the sedimentation tank, and a slit for hiding sediment is formed on the surface of the sediment storage plate.
As a further preferable scheme, an acid-base detector and a salinity detector are arranged in the sedimentation tank.
Compared with the prior art, the waste gas recycling and purifying system for the printing machine has the advantages that the waste gas of the printing machine is sucked into the heating outer cylinder through the air suction device, preheated, filtered and fully combusted at high temperature, then enters the cooling outer shell, the high-temperature gas contacts with water mist to be wetted, finally the gas with moisture meets with the low-temperature condensation plate, the gas with the moisture is liquefied into water to drop into the sedimentation tank, the water drops are subjected to solid-liquid separation in the sedimentation tank, and the whole system is more sufficient and more thorough in waste gas treatment and is also more environment-friendly.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
the device comprises a 1-air suction device, a 2-sedimentation tank, a 3-heating outer cylinder, a 4-preheating wire mesh, a 5-large particle adsorption layer, a 6-porous layer, 7-thin-wall metal balls, an 8-high temperature heater, a 9-cooling shell, a 10-atomizer, a 11-condensing plate, a 12-heat conducting rod, a 13-circulating pipeline and a 14-sediment storage plate.
Detailed Description
The following describes in detail the preferred embodiments of the present invention with reference to the accompanying drawings.
As shown in figure 1, the waste gas recovery and purification system of the printing machine comprises a suction device 1, a heat treatment device, a cooling device and a sedimentation tank 2, wherein the waste gas is in the trend of the suction device 1, the heat treatment device, the cooling device and the sedimentation tank 2, the suction device 1 covers the upper part of the printing machine and can basically absorb all waste gas, the heat treatment device carries out heat treatment on the waste gas to decompose combustible particles and toxic gases in the waste gas, the cooling device dissolves particles which cannot be combusted in the waste gas or substances generated by combustion in water, the cooling device also carries out cooling and discharge on the high-temperature gases, and the sedimentation tank 2 carries out sedimentation separation and layering treatment on solid particles and the harmful substances;
the heat treatment device is positioned above the air suction device 1, the air suction device 1 is connected with the heat treatment device through a pipeline, the heat treatment device comprises a heating outer cylinder 3, a preheating screen 4, a large particle adsorption layer 5 and a porous layer 6 are sequentially arranged in the heating outer cylinder 3 from bottom to top, the preheating screen 4 is used for preheating waste gas, the activity of substances in the waste gas is improved, the large particle adsorption layer 5 can filter out certain toxic substances in the waste gas, a plurality of thin-wall metal balls 7 are piled on the porous layer 6, a high-temperature heater 8 for heating the thin-wall metal balls 7 at high temperature is arranged above the porous layer 6, the filtered waste gas is fully combusted through the high-temperature thin-wall metal balls 7, and toxic substances and combustible particles in the waste gas are changed into stable components;
the cooling device is connected with the upper part of the heat treatment device through a pipeline, the cooling device comprises a cooling shell 9, an atomizer 10 is arranged at the inner top of the cooling shell 9, a row of condensing plates 11 are arranged in the cooling shell 9, the bottom of the cooling shell 9 is a funnel, the sedimentation tank 2 is positioned below the funnel, high-temperature waste gas enters the cooling shell 9 and contacts water mist to moisten dry gas, and the moistened gas is cooled and liquefied after contacting the condensing plates 11, so that water falls into the sedimentation tank 2.
The high-temperature heater 8 is provided with a plurality of heat conducting rods 12 towards the direction of the porous layer 6, the heat conducting rods 12 are inserted into a plurality of stacked thin-wall metal balls 7, the temperature of the thin-wall metal balls 7 is accelerated and improved, and it is ensured that any position in the stacked thin-wall metal balls 7 can reach a high-temperature state.
The condensing plate 10 has an S-shaped structure, which increases the path of the gas when passing through the condensing plate 10, and prolongs the contact time between the wet gas and the condensing plate 10, so that the wet gas can be fully liquefied.
Be provided with circulation pipeline 13 on the sedimentation tank 2, have the water pump on the circulation pipeline 13, the one end intercommunication of circulation pipeline 13 is in sedimentation tank 2 surface of water position, and atomizer 10 is connected to the other end, and circulation pipeline 13 can be with comparatively clean water introduction atomizer 10 of sedimentation tank 2 surface of water position, supplies atomizer 10 to use, saves moisture.
The bottom of the sedimentation tank 2 is provided with a sediment storage plate 14, the surface of the sediment storage plate 14 is provided with a slot for hiding sediment, and the sediment storage plate 14 can be replaced cleanly after the slot is full of sediment.
An acid-base detector and a salinity detector are arranged in the sedimentation tank 2.
Specifically, when in use:
step 1: the air suction device 1 sucks the waste gas generated by the printer and enters the heating outer cylinder 3;
step 2: the waste gas passes through the preheating silk screen 4 to improve the activity of toxic substances and the temperature of floating particles;
step 3: the waste gas passes through the large-particle adsorption layer 5 to adsorb part of toxic substances and floating particles of large particles;
step 4: the waste gas is shunted into the stacked thin-wall metal balls 7 through the porous layer 6, the stacked thin-wall metal balls 7 are heated by the high-temperature heater 8, and toxic substances and small floating particles in the waste gas are combusted by the high-temperature thin-wall metal balls 7;
step 5: the high-temperature exhaust gas after combustion enters a cooling shell 9 and is fully contacted and mixed with water mist sprayed by an atomizer 10;
step 6: the wet high-temperature waste gas is liquefied into water by a condensation plate 11 and is dropped into a sedimentation tank 2 for sedimentation and layering;
further, in step 2, the preheating temperature of the preheating wire mesh 4 is in the range of 50 ° -200 °.
Further, in step 4, the heating temperature of the high-temperature heater 8 to the thin-wall metal ball 7 is 400 ° -600 °.
Further, in step 6, the temperature of the condensing plate 11 is-30 ° -0 °.
Further, the sphere diameter of the thin-wall metal sphere 7 is 1cm-2cm.
While the foregoing is directed to embodiments of the present invention, other and further details of the invention may be had by the present invention, it should be understood that the foregoing description is merely illustrative of the present invention and that no limitations are intended to the scope of the invention, except insofar as modifications, equivalents, improvements or modifications are within the spirit and principles of the invention.
Claims (4)
1. A waste gas recovery and purification system of a printing machine is characterized in that: the device comprises an air suction device (1), a heat treatment device, a cooling device and a sedimentation tank (2), wherein the heat treatment device is positioned above the air suction device (1), the air suction device (1) is connected with the heat treatment device through a pipeline, the heat treatment device comprises a heating outer cylinder (3), a preheating wire mesh (4), a large-particle adsorption layer (5) and a porous layer (6) are sequentially arranged in the heating outer cylinder (3) from bottom to top, a plurality of thin-wall metal balls (7) are piled on the porous layer (6), a high-temperature heater (8) for heating the thin-wall metal balls (7) at high temperature is arranged above the porous layer (6), the upper part of the cooling device is connected with the upper part of the heat treatment device through a pipeline, the cooling device comprises a cooling shell (9), an atomizer (10) is arranged at the inner top of the cooling shell (9), a row of condensation plates (11) are arranged in the cooling shell (9), the bottom of the cooling shell (9) is a funnel, and the sedimentation tank (2) is positioned below the funnel; a plurality of heat conducting rods (12) are arranged in the direction of the high-temperature heater (8) towards the porous layer (6), and the heat conducting rods (12) are inserted into a plurality of stacked thin-wall metal balls (7); the condensing plate (10) is of an S-shaped structure.
2. The waste gas recovery and purification system for a printing machine according to claim 1, wherein: the sedimentation tank (2) is provided with a circulating pipeline (13), the circulating pipeline (13) is provided with a water pump, one end of the circulating pipeline (13) is communicated with the position of the water surface of the sedimentation tank (2), and the other end of the circulating pipeline is connected with an atomizer (10).
3. The waste gas recovery and purification system for a printing machine according to claim 1, wherein: the bottom of sedimentation tank (2) is provided with sediment storage plate (14), the surface of sediment storage plate (14) has the slot that is used for hiding the sediment.
4. The waste gas recovery and purification system for a printing machine according to claim 1, wherein: an acid-base detector and a salinity detector are arranged in the sedimentation tank (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711241510.8A CN107789946B (en) | 2017-11-30 | 2017-11-30 | Waste gas recovery and purification system of printing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711241510.8A CN107789946B (en) | 2017-11-30 | 2017-11-30 | Waste gas recovery and purification system of printing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107789946A CN107789946A (en) | 2018-03-13 |
| CN107789946B true CN107789946B (en) | 2023-12-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711241510.8A Active CN107789946B (en) | 2017-11-30 | 2017-11-30 | Waste gas recovery and purification system of printing machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN107789946B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201880485U (en) * | 2010-08-13 | 2011-06-29 | 北京神州瑞霖环保科技有限公司 | VOCs (Volatile Organic chemicals) waste gas processing system in printing technology |
| CN105413387A (en) * | 2015-11-12 | 2016-03-23 | 宁波大学 | VOCs tail gas adsorption-catalytic combustion treatment system |
| CN205164400U (en) * | 2015-11-06 | 2016-04-20 | 新昌县羽林街道东陈机械厂 | Waste gas treatment system of machine room |
| CN106379044A (en) * | 2016-09-09 | 2017-02-08 | 广东芬尼克兹环保设备有限公司 | Purification treatment system for organic waste gas and control method |
| CN106390630A (en) * | 2016-11-30 | 2017-02-15 | 南京海獭软件有限责任公司 | Continuous non-shut-down printing and dyeing waste gas treatment device |
| CN207628173U (en) * | 2017-11-30 | 2018-07-20 | 江苏飞视文化发展有限公司 | A kind of printing machine waste gas recovery purification system |
-
2017
- 2017-11-30 CN CN201711241510.8A patent/CN107789946B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201880485U (en) * | 2010-08-13 | 2011-06-29 | 北京神州瑞霖环保科技有限公司 | VOCs (Volatile Organic chemicals) waste gas processing system in printing technology |
| CN205164400U (en) * | 2015-11-06 | 2016-04-20 | 新昌县羽林街道东陈机械厂 | Waste gas treatment system of machine room |
| CN105413387A (en) * | 2015-11-12 | 2016-03-23 | 宁波大学 | VOCs tail gas adsorption-catalytic combustion treatment system |
| CN106379044A (en) * | 2016-09-09 | 2017-02-08 | 广东芬尼克兹环保设备有限公司 | Purification treatment system for organic waste gas and control method |
| CN106390630A (en) * | 2016-11-30 | 2017-02-15 | 南京海獭软件有限责任公司 | Continuous non-shut-down printing and dyeing waste gas treatment device |
| CN207628173U (en) * | 2017-11-30 | 2018-07-20 | 江苏飞视文化发展有限公司 | A kind of printing machine waste gas recovery purification system |
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| Publication number | Publication date |
|---|---|
| CN107789946A (en) | 2018-03-13 |
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