Printing machine waste gas recycling and purification system

Abstract

The invention discloses a printing machine waste gas recycling and purification system. The printing machine waste gas recycling and purification system comprises a gas suction device, a heat treatment device, a cooling device and a sedimentation tank, wherein a pre-heating screen mesh, a large-particle adsorption layer and a porous layer are arranged in a heating outer barrel in sequence from bottom to top; a plurality of thin-wall metal balls are stacked on the porous layer; a high-temperature heater is arranged above the porous layer; an atomizer is arranged at the top in a cooling shell; one row of condensation plates are arranged in the cooling shell; the sedimentation tank is located below the cooling shell. Compared with the prior art, the printing machine waste gas recycling and purification system has the advantages that the gas suction device is used for sucking printing machine waste gas into the heating outer barrel, the printing machine waste gas is pre-heated, filtered and sufficiently combusted at high temperature, and then enters the cooling shell; high-temperature gas is in contact with water mist to be wetted; finally, when the gas with wet air meets the low-temperature condensation plates, the gas is liquefied into water drops and enters the sedimentation tank; the water drops are subjected to solid-liquid separation in the sedimentation tank; the whole system can be used for more sufficiently and completely treating the waste gas and is more environmentally friendly.

Description

technical field [0001] The invention relates to a printing machine waste gas recovery and purification system, which belongs to the technical field of environmental protection printing equipment. Background technique [0002] During the working process of the printing machine, a lot of exhaust gas will be emitted. The diffusion of exhaust gas into the production workshop will lead to a bad working environment, affect the air quality, and seriously affect the health of workshop workers. At present, many workshops will install exhaust fans, which can quickly discharge the exhaust gas generated in the workshop. This method eliminates the exhaust gas in the workshop to a certain extent, but on the one hand, the discharge of exhaust gas is not thorough, and on the other hand, direct discharge of exhaust gas will cause pollution. environment. In order to prevent the exhaust gas generated during the printing press from polluting the air in the workshop, exhaust hoods are installed...

AI Technical Summary

Problems solved by technology

The exhaust gas from the printing machine is directly discharged outside through the gas collecting hood, which can avoid the pollution of the workshop environment by the exhaust gas, but the exhaust gas directly discharged outdoors will pollute the environment

[0004] Another example is the patent No. 201520464890.1, a fully enclosed waste gas recovery device for printing machines, which aims to solve the problem that the waste gas emitted by the printing machine not only pollutes the air in the workshop and affects the health of workers, but also directly discharges the waste gas outdoors to pollute the environment.

The invention includes a gas collection hood, a spray tower, a photoelectric waste gas processor, and an exhaust chimney. The exhaust hood is closed and connected to the upper end of the printing machine, the lower end of the spray tower is connected to the air intake pipe, and the upper end of the air collection hood is connected to the air intake pipe through a pipe. , the upper end of the spray tower is connected with a connecting pipe, the connecting pipe is connected with the photoelectric waste gas processor, the outlet pipe is connected between the photoelectric waste gas processor and the exhaust chimney, an exhaust fan is installed on the air intake pipe, and the spray tower is installed near the upper end There is a water mist spraying mechanism; the exhaust gas recovery device cannot fully dispose of all the ink particles in the exhaust gas, and there will still be residual substances harmful to the environment in the exhaust gas

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