RU4923U1 - WET GAS CLEANING DEVICE - Google Patents

Abstract

1. A device for wet gas purification, comprising a housing with a gas-liquid interaction chamber having gas inlet and outlet nozzles, as well as a liquid atomizer and a suction nozzle connected by a circulation circuit filled with liquid and including a cooler and a liquid regenerator, characterized in that the regenerator equipped with a liquid level controller, made in the form of a drain valve, the shutoff member of which is mechanically connected to the float. 2. The device according to claim 1, characterized in that it is equipped with a plate installed upside down in the lower part of the housing, under which a suction pipe of the liquid circulation circuit is placed.

Description

(99

 B0I 47/06

Country for WET

The utility model relates to equipment for wet gas purification, in particular, to devices for removing volatile harmful components from a vapor-air mixture and can be used in the chemical, oil refining and varnish industry and other industries.

A device for wet gas cleaning, including a housing with inlet and outlet nozzles, heat exchangers and a spray of irrigation fluid, is built into the upper part of the housing and connected to the lower part of the housing by a pipeline through a pump and a regeneration unit (see AS USSR No. 1069232 of 23.12 .80, publ. 23.07.85, 1Sh1: V01D47 / 06 Device for wet gas purification).

In this device, gas purification is carried out with continuous cooling of the irrigating liquid, due to which its absorption capacity increases. Cooling is via an integrated heat exchanger.

However, this device allows the purification of gases only at coolant temperatures above 0 ° C.

The use of this device at lower temperatures is impractical, since this will lead to a deterioration of LRR-.

heat transfer process due to the rapid growth of the snow coat on

heat exchanger and its failure. This indicates unsatisfactory performance characteristics of the device, namely: low reliability of its operation.

The closest in technical essence and the achieved result and selected as a prototype is a device for wet gas purification, containing a corsus with a gas-liquid interaction chamber having gas supply and exhaust pipes.

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as well as a liquid atomizer and a suction nozzle connected by a circulation circuit filled with liquid and including a cooler and a liquid regenerator (see AS, USSR No. I29II88 of 07.16.85, publ. 23.02.87, MKL: V01D47U06, R24RZU14 Water condensation device from gas).

As a cleaning liquid in the described device uses a substance with a negative melting point. During the operation of the device, when the gas to be cleaned interacts with the cooled liquid, the volatile harmful substances and water vapor contained in the gas condense and a solid phase forms, i.e. ice crystals, which crumbles in the regenerator. The regenerator of the cleaning fluid in this device is made in the form of a sump for the mechanical separation of the solid phase.

The prototype has the same drawback as its counterpart - low reliability. This is due to the fact that during the operation of the device, a large amount of solid phase can accumulate in the regenerator. The constant formation of an uncontrolled amount of solid phase in the regenerator causes an increase in the volume occupied by the liquid.

Exceeding the permissible volume of liquid can lead to overflow of the regenerator and back to the liquid being thrown into the pipe for supplying the gas to be cleaned and the solid phase to enter the circulation circuit, which can cause the KOHiypa circulation elements to fail and lead to an emergency. The objective of this utility model is to increase the reliability of the device for wet gas purification.

The technical result of the utility model is to automatically maintain a given volume of circulating fluid due to the timely removal of excess fluid from the regenerator along with the solid phase.

3)

for wet cleaning times, containing a housing with a gas-liquid interaction chamber having gas inlet and outlet nozzles, as well as a liquid atomizer and a suction nozzle connected by a circulation loop filled with liquid and including a cooler and a liquid regenerator, in contrast to the prototype, the regenerator is equipped with a regulator liquid level, made in the form of a drain valve, the shutoff member of which is mechanically connected to the float.

To prevent solids from entering the fluid circuit, which also contributes to reliable operation,

the device is equipped with a plate installed upside down in the lower part of the housing, under which a suction pipe of the liquid circulation circuit is placed.

Studies conducted on the basis of patent and scientific and technical information, showed that the proposed device is unknown and does not follow explicitly from the studied prior art, that is, meets the criterion of novelty.

This device can be widely used for wet cleaning of steam train flows of our mixture contaminated with volatile harmful substances.

The proposed device can be widely used at the enterprises of the chemical, oil-refining, and paint-and-varnish industries and is easily manufactured using standard equipment widely produced by the domestic industry.

Consequently, the proposed utility model meets the criterion of industrial applicability.

Providing the device with a liquid level regulator, made in the form of a drain clan, the shut-off element of which is mechanically connected to the float, it allows automatic removal of accumulated solid phase and excess liquid generated during gas purification from the regenerator.

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Maintaining a predetermined liquid level in automatic mode eliminates the backflow of liquid with solid inclusions into the gas supply pipe, as well as its getting into the circulation circuit, which leads to long-term stable operation of the device.

Thus, the task is solved - improving the reliability of the device for wet gas purification.

The placement of the suction pipe of the liquid circulation circuit under the plate, installed in the housing of the proposed method, prevents the solid phase from entering into it and back into the circulation circuit of the cleaning liquid, i.e. ice crystals and volatile harmful substances. It also helps to improve the reliability of the device.

The essence of the claimed utility model is illustrated by the drawing, which shows a General view of the device for wet gas purification in section.

A device for wet cleaning of gas, for example air with an admixture of benzene vapor, contains a thermally insulated housing I, the upper part of which is a gas-liquid interaction chamber 2 having a nozzle 3 for supplying a contaminated vapor-air mixture and a nozzle 4 for removing purified gas.

The device also contains a circuit (not indicated in the drawing) of circulation filled with a cleaning liquid and including a suction pipe 5, cooler b, atomizer 7 and liquid regenerator 8. As a cleaning liquid, a substance with a negative melting point, dissolving benzene vapors, for example, kerosene, was used.

The lower liquid-filled part of the housing I is a regenerator 8, equipped with a regulator (not shown in the drawing) of the liquid level, made in the form of a drain valve 9, the locking element 10 of which is connected by a lever system II to the float 12, The drain valve 9 serves to remove buildings I ice crystals and excess liquid formed in the process of gas purification.

To prevent the ingress of a solid phase into the circulation circuit of the cleaning liquid, the device is equipped with a plate 13 installed upside down in the lower part of the housing I, under which a suction pipe 8 of the liquid circulation circuit is placed.

In addition, the device includes a pump 14 for circulating the liquid in a closed loop and a nozzle 15, for example, a layer of metal chips placed in the chamber 2 to improve the heat transfer process between the liquid and the gas to be cleaned.

The device operates as follows.

Case I of the device and the circulation circuit are filled with the required volume of the cleaning liquid - kerosene. The fluid cooler 6 and pump 14 are turned on, providing the supply of liquid cooled to a predetermined temperature to the atomizer 7

The gas to be cleaned containing benzene vapor enters through the pipe 3 into the lower part of the chamber 2 and, rising upward, passes through the sprayed liquid.

As a result of gas cooling, condensation of benzene and water vapor contained in it occurs due to a decrease in saturated vapor pressure. The purified gas is discharged through the nozzle 4, and the liquid, having passed the nozzle 15, enters the separation plate 13 and then through the suction nozzle 5 enters the pump 14.

The ice crystals formed during the condensation process are carried away by the fluid flow to the outside of the housing I — to the regenerator 8, increasing the volume occupied by the cleaning liquid in it.

When the liquid reaches a critical level, the float 12 located on its surface through the leverage system II affects

6.

It blows on the shut-off element 10 of the drain valve 9. The valve 9 opens and part of the liquid, together with ice crystals merge. The liquid level drops to a predetermined level, the float 12 lowers, the shut-off element 10 moves, closing the valve opening 9, and the liquid drains off. This ensures the automatic removal of excess liquid and ice crystals from the regenerator 8.

Thus, the inventive device for wet gas purification in comparison with the prototype can significantly improve the reliability of its operation by automatically maintaining a given volume of circulating liquid. Applicants-authors: V.M. Polyakov I.Yu. Devyatlovsky T.M. Petrova

Claims (2)

1. A device for wet gas purification, comprising a housing with a gas-liquid interaction chamber having gas inlet and outlet nozzles, as well as a liquid atomizer and a suction nozzle connected by a circulation circuit filled with liquid and including a cooler and a liquid regenerator, characterized in that the regenerator equipped with a liquid level regulator, made in the form of a drain valve, the shutoff member of which is mechanically connected to the float. 2. The device according to claim 1, characterized in that it is equipped with a plate installed upside down in the lower part of the housing, under which a suction pipe of the liquid circulation circuit is placed.