RU1771838C - Device for polluted air trapping - Google Patents

Abstract

The invention relates to ventilation equipment and can be used in the production of chemical fibers. The purpose of the invention is to increase the efficiency of pollution capture. The goal is achieved by maximizing the removal of carbon disulfide in the form of a concentrated air-gas mixture suitable for recovery. The device for collecting air pollution contains a sealed circulation refrigeration storage chamber. The chamber has gas-tight partitions and walls, a rectangular inlet located along the refrigeration unit, a perforated condensate grate, and exhaust openings of a permanent suction. 1 ill.

Description

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The invention relates to ventilation equipment and can be used in the production of chemical fibers.

An exhaust hood is known, comprising a housing with a receiving opening and an outlet pipe and an insert located in the axial region of the housing with a damped lower base defining a hazardous area. A refrigerator is located on the upper base of the insert, and the side walls of the insert are leaky.

The disadvantage of the umbrella is the inability to utilize harmful emissions due to their low (insufficient for recovery) concentration in the outlet pipe, i.e. it is not possible to increase the concentration of emissions during their suction.

The purpose of the invention is to increase the efficiency of trapping air contaminated with carbon disulfide by utilizing carbon disulfide by increasing its concentration to a value suitable for recovery.

The drawing schematically shows a device for capturing contaminated air.

The device comprises a housing 1 with an upper muffled base 2, a receiving hole 3, and an exhaust system 4. In the housing 1, a refrigeration chamber 5 with a condensate drainage system containing a condensate grate 6 and trays 7 is coaxial to it. An insert 8 is coaxially located under the refrigeration chamber 5 limiting the contaminated air emission zone 9 (process zone) and isolating it from the working zone 10. The side walls of the insert 8 have holes and the lower base 11 is plugged. The device has a storage chamber 12, the side walls 13 of which are adjacent to the upper edge of the insert VI VI

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GCI 8 and to the upper base 2 of the housing 1, and the bottom 14 is adjacent to the upper base of the insert 8 and has an opening 15 that communicates with the refrigeration chamber 5.

The refrigeration chamber 5 is located at a distance from the bottom 14 of the storage chamber 12 and the upper base 2 of the housing 1. In the refrigeration chamber 5 there are gas-tight partitions 16 fixed alternately on the upper base 2 of the housing 1 and on the refrigeration chamber 5, which form a circulation (recirculation) air passage channels ending with air outlet openings 17 communicating the lower part of the storage chamber 12 with the cooling chamber 5. The storage chamber 12 has exhaust openings 1-8 which are permanently acting suction (not shown), located at the level of the outlet 17 of the circulation channel

The device operates as follows.

The gas-vapor mixture formed by the evolution of gas from the threads and vapors of the hot baths and overflows located in the process zone 9 rises along the side walls of the insert 8 to the hole 15 and passes through it, passing the condensate grate 6, into the storage chamber 12. Then the gas-vapor mixture passes through the refrigerator 5 through the circulation channels formed by the gas-tight partitions 16. Passing through the refrigerator 5, the gas-vapor mixture is cooled, decreasing in volume. Water vapor condensate flows into trays 7 and is discharged through a drainage system (not shown). In direct contact with a condensate droplet of a gas stream from the latter, most of the water vapor is removed. In this case, in the remaining volume of the gas stream, the concentration of carbon disulphide, poorly soluble in water, increases. Part of the gas mixture with a high concentration of carbon disulphide is removed through the exhaust openings 18 of a constant suction. The other part, through the recirculation outlet openings 17, follows the path of the gas flow through the storage chamber 12 and the refrigeration chamber 5, i.e.

there is a process of accumulation of carbon disulfide in the volume of the storage chamber 12. Emissions of carbon disulfide in the working area 10, which occur when the side walls open

inserts 8 or when pressure changes in the process zone 9 are collected in the housing 1 and removed by the exhaust system 4.

The use of the proposed device for trapping polluted air allows us to solve two main problems: to reduce the concentration of carbon disulfide in the working area of industrial premises to MPC and to remove carbon disulfide in the form of concentrated gas-air mixtures as much as possible

to the fullest possible recovery of carbon disulfide at economically reasonable costs, which will prevent pollution of the residential area.

Claims (1)

The claims A device for capturing contaminated air, containing a housing, with an upper blanked base, a receiving hole and an exhaust system located in a housing coaxial to it a refrigerator with a condensate drainage system and an insert located under the refrigerator, the side walls of which are made with holes and the lower base is plugged, characterized in that, in order to increase the efficiency of trapping air contaminated with carbon disulfide, due to the utilization of carbon disulfide by increasing its concentration, it is equipped with a storage chamber, the side walls of which are adjacent to the upper edge of the insert and to the upper base of the housing, and the bottom is adjacent to the upper base of the insert ki and has an opening that communicates with the refrigerator, while the refrigerator is located at a distance from the bottom of the storage chamber and the upper base of the housing, has partitions fixed alternately on the upper base of the housing and the bottom of the refrigerating chamber with the formation of channels between them for the passage of air, and the storage chamber has exhaust openings located at the level of the outlet of the channel, communicating the lower part of the storage chamber with a refrigerator. sixteen 5