CN111228899A - Zero exhaust gas discharge system and process for injection molding machine - Google Patents
Zero exhaust gas discharge system and process for injection molding machine Download PDFInfo
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- CN111228899A CN111228899A CN202010195845.6A CN202010195845A CN111228899A CN 111228899 A CN111228899 A CN 111228899A CN 202010195845 A CN202010195845 A CN 202010195845A CN 111228899 A CN111228899 A CN 111228899A
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- injection molding
- molding machine
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- cyclone separator
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
- B01D45/16—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by the winding course of the gas stream, the centrifugal forces being generated solely or partly by mechanical means, e.g. fixed swirl vanes
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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
- B01D53/14—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
- B01D53/1487—Removing organic compounds
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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
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C2045/1784—Component parts, details or accessories not otherwise provided for; Auxiliary operations not otherwise provided for
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- 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)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to a zero exhaust system and process of waste gas of an injection molding machine, belonging to the technical field of environmental protection. The system for zero emission of the waste gas of the injection molding machine comprises the injection molding machine, wherein an induced draft cover is arranged above the injection molding machine and connected with an induced draft fan, the induced draft fan is connected with a cyclone separator, the top of the cyclone separator is connected with a condenser, and the condenser is connected with a raw material collecting device through a pipeline A; the bottom of the cyclone separator is connected with the heavy oil adsorption tank through a pipeline B. The process of the invention is that the waste gas generated by the injection molding machine is collected and sucked into a cyclone separator and separated into two parts; the recyclable waste gas is condensed into a viscous state material and then collected; the waste gas which can not be recycled absorbs the organic components in the waste gas through the heavy oil, and the absorbed gas is discharged into an injection molding workshop. The invention has scientific and reasonable design and convenient use, saves resources, reduces the production and treatment cost, reduces the environmental pollution, and is energy-saving and environment-friendly.
Description
Technical Field
The invention relates to a zero exhaust system and process of waste gas of an injection molding machine, belonging to the technical field of environmental protection.
Background
Waste gases such as PE and PP are generated in the production process of plastics, and the main parts for generating chemical waste gases comprise: hot melt systems, blow molding systems. The main components of the waste gas are PE and PP waste gas generated by heating polyethylene and polypropylene.
The traditional plastic production process comprises the steps of collecting PE and PP waste gas generated by heating polyethylene and polypropylene through a gas collecting hood, introducing the waste gas into an electrostatic purifier through a gas collecting pipeline, treating the waste gas by low-temperature plasma and the like, and discharging the treated waste gas through a waste gas exhaust funnel with the height of 15m by using an induced draft fan. Although the waste is discharged after reaching the standard, certain environmental pollution is caused, and PE and PP which can be recycled originally are wasted. Meanwhile, in order to enhance the air inducing effect, the adopted fan is large in air quantity, high in motor efficiency and large in power consumption.
Therefore, it is necessary to develop an environmentally friendly exhaust system and process for injection molding machine.
Disclosure of Invention
The invention aims to provide a system and a process for zero emission of waste gas of an injection molding machine, which have scientific and reasonable design and convenient use, save resources, reduce the production and treatment cost, reduce environmental pollution, save energy and protect environment.
The system for zero emission of the waste gas of the injection molding machine comprises the injection molding machine, wherein an induced draft cover is arranged above the injection molding machine and connected with an induced draft fan, the induced draft fan is connected with a cyclone separator, the top of the cyclone separator is connected with a condenser, and the condenser is connected with a raw material collecting device through a pipeline A; the bottom of the cyclone separator is connected with the heavy oil adsorption tank through a pipeline B.
The raw material collecting device is connected with a hopper on the injection molding machine through a pump, so that waste gas is not discharged outside, the recycling of the waste gas is realized, and the energy-saving and environment-friendly effects are achieved.
Preferably, a check valve is arranged on a pipeline C connecting the raw material collecting device and the hopper.
Preferably, the induced draft fan is a low-power induced draft fan.
The pipeline B extends into the bottom of the heavy oil adsorption tank, so that heavy oil can better adsorb waste gas which cannot be recycled.
And a water outlet is formed in one end, close to the cyclone separator, of the condenser, and a water inlet is formed in one end, close to the raw material collecting device, of the condenser. The shell pass is walked in the hydrologic cycle, and the pipe pass is walked to the gas that needs cooling, and water is walked upwards, and gas is walked downwards, realizes better condensation effect.
Pipeline A stretches into raw materials collection device's top, the more collection viscous state material of being convenient for prevents that viscous state material quality from having formed the suck-back phenomenon through pipeline A's bottom more.
Preferably, the cyclone is a high temperature cyclone.
The waste gas zero emission process of the injection molding machine comprises the following steps:
(1) collecting waste gas generated by an injection molding machine and sucking the waste gas into a cyclone separator, wherein the cyclone separator separates the sucked gas into two parts, one part is waste gas which can be recycled, and the other part is waste gas which cannot be recycled;
(2) the waste gas capable of being recycled enters a condenser for cooling, and the material condensed into a viscous state is collected through a pipeline A and enters a raw material collecting device;
(3) waste gas which cannot be recycled is collected through a pipeline B and enters the bottom of the heavy oil adsorption tank, organic components in the waste gas are adsorbed through heavy oil, and the adsorbed gas is discharged into an injection molding workshop.
Preferably, the collected viscous-state material is fed into the interior of the injection molding machine.
The waste gas zero emission system of the injection molding machine is particularly suitable for a closed space. Waste gas such as PP, PE that the injection molding machine produced is collected and is inhaled inside cyclone through induced air cover and draught fan, and cyclone separates into two parts with inspiratory gas, and partly is recyclable's waste gas, and another part is unable recyclable's waste gas. The waste gas capable of being recycled enters a condenser for cooling, the circulating cooling water flows through a shell pass, the waste gas flows through a pipe pass, the waste gas meets low-temperature circulating cooling water, the material condensed into viscous state is collected through a pipeline A and enters a raw material collecting device, and the collected viscous state materials such as PE, PP and the like can be added into the injection molding machine again through a pump and a hopper without being discharged; waste gas which cannot be recycled is collected through the pipeline B and enters the bottom of the heavy oil adsorption tank, organic components in the waste gas are adsorbed through the heavy oil in the process that the waste gas rises in the heavy oil adsorption tank, and the adsorbed gas is discharged into an injection molding workshop and is not discharged outside. Therefore, air circulation and partial recycling of raw materials in the whole closed workshop system are realized, the raw materials are saved, the environmental pollution is reduced, and the effects of energy conservation, environmental protection and consumption reduction are achieved.
The chemical peculiar smell is generated by emitting raw materials or products and byproducts into the air, which not only pollutes the environment, but also wastes resources. The invention improves the process level, strengthens the production technology and equipment management, avoids the leakage, the overflow, the dripping and the leakage, fully utilizes various resources and energy sources, improves the utilization rate of raw materials and energy sources, does not generate or generates little waste, reduces the environmental protection pressure and saves the resources, which is the strategy of eliminating the chemical peculiar smell and treating the root cause.
According to the material characteristics of the injection molding machine, the control part and the production part of the injection molding machine are separated, and a production plant is built according to the standard of a clean plant, so that dust and impurities are prevented from entering the plant to mix the materials into impurities; and the production factory is sealed to ensure that the gas generated in the production process does not diffuse outwards. The invention utilizes the gas phase equilibrium principle, the condensation method, the dissolution method and the like to scientifically design the waste gas treatment system and the process, treats the tail gas and eliminates the peculiar smell, not only can not directly discharge the waste gas generated by the equipment into the atmosphere, but also can condense the waste gas into the raw material for recycling again. In addition, the air quantity of the fan is reduced, the condensation effect is improved, and the power consumption is reduced.
Compared with the prior art, the invention has the following beneficial effects:
(1) the invention adopts a closed cycle low-temperature condensation method and a device to carry out condensation and cyclic utilization on the waste gases such as PE, PP and the like, thereby saving raw materials;
(2) the invention adopts a closed heavy oil dissolving method and a closed heavy oil dissolving device to treat gases which cannot be recycled, and the adsorbed gases are discharged into an injection molding workshop and are not discharged;
(3) the invention has scientific and reasonable design and convenient use, saves resources, reduces the production and treatment cost, reduces the environmental pollution, and is energy-saving and environment-friendly.
Drawings
FIG. 1 is a schematic structural view of the present invention;
in the figure: 1. a condenser; 2. a cyclone separator; 3. a hopper; 4. an induced draft fan; 5. an induced draft cover; 6. an injection molding machine; 7. a one-way valve; 8. a line C; 9. a pump; 10. a line B; 11. a heavy oil adsorption tank; 12. a water inlet; 13. a line A; 14. a raw material collecting device; 15. and (7) a water outlet.
Detailed Description
The present invention will be described in detail below with reference to specific examples, but the present invention is not limited to these examples.
Example 1
As shown in fig. 1, the injection molding machine waste gas zero emission system comprises an injection molding machine 6, wherein an induced draft hood 5 is arranged above the injection molding machine 6, the induced draft hood 5 is connected with an induced draft fan 4, the induced draft fan 4 is connected with a cyclone separator 2, the top of the cyclone separator 2 is connected with a condenser 1, and the condenser 1 is connected with a raw material collecting device 14 through a pipeline a 13; the bottom of the cyclone 2 is connected to the heavy oil adsorption tank 11 through a line B10.
The pipeline B10 extends into the bottom of the heavy oil adsorption tank 11, so that heavy oil can better adsorb waste gas which cannot be recycled.
And a water outlet 15 is formed in one end, close to the cyclone separator 2, of the condenser 1, and a water inlet 12 is formed in one end, close to the raw material collecting device 14, of the condenser 1. The shell pass is walked in the hydrologic cycle, and the pipe pass is walked to the gas that needs cooling, and water is walked upwards, and gas is walked downwards, realizes better condensation effect.
The line a13 extends into the top of the material collection device 14 to facilitate more collection of viscous material and prevent back suction through the bottom of line a 13.
Example 2
The other structures are the same as those in embodiment 1, except that:
the draught fan 4 is a low-power draught fan 4.
The cyclone separator 2 is a high temperature cyclone separator 2.
Example 3
The other structures are the same as those in embodiment 1, except that:
the raw material collecting device 14 is connected with the hopper 3 on the injection molding machine 6 through the pump 9, so that waste gas is not discharged outside, the recycling of the waste gas is realized, and the energy-saving and environment-friendly effects are achieved.
A check valve 7 is arranged on a pipeline C8 connecting the raw material collecting device 14 and the hopper 3.
The waste gas zero emission system of the injection molding machine is particularly suitable for a closed space. Waste gas such as PP, PE that the injection molding machine produced is collected and is inhaled inside cyclone 2 through induced air cover 5 and draught fan 4, and cyclone 2 separates into two parts with inspiratory gas, and partly is recyclable's waste gas, and partly is the waste gas that can't cyclic utilization.
But cyclic utilization's waste gas gets into condenser 1 and cools off, and the shell side is walked to recirculated cooling water, and the pipe side is walked to waste gas, and waste gas meets microthermal recirculated cooling water, and the material that the condensation becomes viscous state passes through pipeline A13 and collects and gets into raw materials collection device 14, can also add the viscous state's such as PE, PP that collect again inside injection molding machine 6 through pump 9 and hopper 3, not outer row.
The exhaust gas which cannot be recycled is collected through the pipeline B10 and enters the bottom of the heavy oil adsorption tank 11, in the process that the exhaust gas rises in the heavy oil adsorption tank 11, the heavy oil adsorbs organic components in the exhaust gas, and the adsorbed gas is discharged into an injection molding workshop and is not discharged outside. Therefore, air circulation and partial recycling of raw materials in the whole closed workshop system are realized, the raw materials are saved, the environmental pollution is reduced, and the effects of energy conservation, environmental protection and consumption reduction are achieved.
Claims (10)
1. The utility model provides an injection molding machine waste gas zero release system, includes injection molding machine (6), its characterized in that: an induced draft hood (5) is arranged above the injection molding machine (6), the induced draft hood (5) is connected with an induced draft fan (4), the induced draft fan (4) is connected with a cyclone separator (2), the top of the cyclone separator (2) is connected with a condenser (1), and the condenser (1) is connected with a raw material collecting device (14) through a pipeline A (13); the bottom of the cyclone separator (2) is connected with a heavy oil adsorption tank (11) through a pipeline B (10).
2. The zero exhaust gas emission system of an injection molding machine according to claim 1, characterized in that: the raw material collecting device (14) is connected with a hopper (3) on the injection molding machine (6) through a pump (9).
3. The zero exhaust gas emission system of an injection molding machine according to claim 2, characterized in that: a check valve (7) is arranged on a pipeline C (8) of the raw material collecting device (14) connected with the hopper (3).
4. The zero exhaust gas emission system of an injection molding machine according to claim 1, characterized in that: the induced draft fan (4) is a low-power induced draft fan (4).
5. The zero exhaust gas emission system of an injection molding machine according to claim 1, characterized in that: the pipeline B (10) extends into the bottom of the heavy oil adsorption tank (11).
6. The zero exhaust gas emission system of an injection molding machine according to claim 1, characterized in that: a water outlet (15) is arranged at one end of the condenser (1) close to the cyclone separator (2), and a water inlet (12) is arranged at one end of the condenser (1) close to the raw material collecting device (14).
7. The zero exhaust gas emission system of an injection molding machine according to claim 1, characterized in that: the line A (13) extends into the top of the raw material collection device (14).
8. The zero exhaust gas emission system of an injection molding machine according to claim 1, characterized in that: the cyclone separator (2) is a high-temperature cyclone separator (2).
9. The zero exhaust process of the waste gas of the injection molding machine is characterized in that: the method comprises the following steps:
(a) collecting waste gas generated by the injection molding machine (6) and sucking the waste gas into the cyclone separator (2), wherein the cyclone separator (2) separates the sucked gas into two parts, one part is waste gas which can be recycled, and the other part is waste gas which cannot be recycled;
(b) the waste gas capable of being recycled enters a condenser (1) for cooling, and the material condensed into a viscous state is collected by a pipeline A (13) and enters a raw material collecting device (14);
(c) the waste gas which can not be recycled is collected through a pipeline B (10) and enters the bottom of a heavy oil adsorption tank (11), the heavy oil adsorbs organic components in the waste gas, and the adsorbed gas is discharged into an injection molding workshop.
10. The zero-emission process of exhaust gas from an injection molding machine according to claim 9, characterized in that: the collected viscous state material is added into an injection molding machine (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010195845.6A CN111228899A (en) | 2020-03-19 | 2020-03-19 | Zero exhaust gas discharge system and process for injection molding machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010195845.6A CN111228899A (en) | 2020-03-19 | 2020-03-19 | Zero exhaust gas discharge system and process for injection molding machine |
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| Publication Number | Publication Date |
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| CN111228899A true CN111228899A (en) | 2020-06-05 |
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| CN202010195845.6A Withdrawn CN111228899A (en) | 2020-03-19 | 2020-03-19 | Zero exhaust gas discharge system and process for injection molding machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113230830A (en) * | 2021-04-14 | 2021-08-10 | 内蒙古常盛制药有限公司 | Treatment method of industrial waste gas containing butyl acetate |
-
2020
- 2020-03-19 CN CN202010195845.6A patent/CN111228899A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113230830A (en) * | 2021-04-14 | 2021-08-10 | 内蒙古常盛制药有限公司 | Treatment method of industrial waste gas containing butyl acetate |
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Application publication date: 20200605 |
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