SU1643059A2 - Device for gas cleaning - Google Patents

Description

one

(61) 1510894

(21) 4670858/06

(22) 03/31/89

(46) 04.23.91. Number 15

(71) Caspian Zonal Veterinary Research Institute

(72) I.I. Immiyev (53) 621.928.97 (088.8)

(56) USSR Author's Certificate No. 1510894, cl. B 01 D 50 / 00.1987, (54) DEVICE FOR CLEANING GAS

(57) The invention makes it possible to increase the purification efficiency of the exhaust gas while avoiding spilling of the evaporated liquid from the surface of the filter element 8 during the evaporative gas cooling process. This is achieved by covering the filter element 8 from the outlet nozzle with an impervious varnish paint This increases the cleaning efficiency of the gas, ensures its contact with the entire volume of the evaporated liquid and prevents its spilling. 1 il.

The invention relates to mechanical engineering, namely to devices for cleaning various gases, and is an improvement of the invention according to the authors. St. N 1510894.

The aim of the invention is to test efficiency.

The drawing shows the proposed device, a General view.

The device includes a housing 1 with attached inlet and outlet nozzles 2 and 3, respectively. A container 4 for liquid is installed above the housing 1 with a pipeline 5 equipped with a metering device b and a sealing ring 7. Inside the housing 1 at the intersection of the entire gas flow path there is a fixed disk filter element 8 made of a fine-porous ceramic material perforated with coaxial holes 9 opposite surfaces 10 and 11 and with a diametral non-through tubular channel 12 between the openings 9. In this non-through tubular channel 12 has branches, filled with fine-grained Nitel and communicates with the liquid reservoir 4 via pipe 5 and seal ring 7.

The surface 11 of the filter element 8 on the side of the outlet nozzle 3 is coated with a vapor-proof lacquer paint 13.

In the housing 1 there is a hopper 14 for discharge of liquid flowing down from the surface of the filter element 8.

In order to maintain the operational velocity of the gas flow through the exhaust pipe of an automobile, the cross-sectional area of the perforated holes in the contact element installed inside the diffuser is set equal to the cross-sectional area of the exhaust pipe with a larger diffuser diameter than the exhaust pipe.

The device works as follows.

Before operation, the exhaust gas purification device is connected to the outlet end of the vehicle exhaust pipe. The container 4, located in a secluded place of the car above the housing 1 and connected by a pipeline 5 with the filter element 8, is filled with liquid (water, 2-3% ethanolamine solution, lime milk, etc.) and the dispenser valve 6 is opened to prepare the filter element 8 to work, i.e.

impregnating the filler and wetting the surface of the contact element.

During the operation of the device, a hot car exhaust gas stream

enters the housing 1 through the inlet 2 and washes the constantly wetted surface 10 of the contact element 8. Next, the gas flow, the passage through the moistened through holes 9, is mixed with

the liquid evaporates from the surface and through holes and is cooled. At the same time, highly dispersed particles of moisture, settling on resinous and other aerosol particles in the gas stream, ensure their coarsening and sedimentation after leaving the nozzle of the exhaust pipe, as well as neutralizing harmful gases (sulfur dioxide, carbon monoxide, etc.).

Thanks to the heat exchange between hot

The exhaust gas flow of the car and the cold, wet surface of the contact element provide intensive evaporation of liquid from its surface. With a wetted surface area of the contact element of 350-400 cm2, a gas flow velocity of 5.5 m / s and its temperature of 55-65 ° C, the flow rate of the evaporated liquid is 2-2.5 ml / min, and the exhaust gas cleaning efficiency

mixture of aerosols reaches 80-85%. At the same time, noise suppression of the exhaust gas of a car by 25-30% and a decrease in its temperature by 7-10 ° C is also provided.

The device is not clogged during operation, which ensures its stable operation without causing operating costs for maintenance and repair.

The contact element 8 (porous ceramics) has pores measured by microns, and the exhaust gas flow incident on it cannot overcome the resistance force and penetrate the pores, and the evaporating liquid entering the deaf

the channels of the contact element filled with sand freely seep through these pores to form a thin layer of liquid on its front surface 10 and through holes 9. Subsequently, the liquid evaporates from the front surface and through

the holes of the contact element, carried by the hot exhaust gas stream through the outlet to the atmosphere,

In the case when non-through deaf channels 12 are not filled with fine-grained filler (sand), the evaporated liquid entering into these channels and completely filled them is intensively absorbed through the pores.

Claims (1)

and, having not completely evaporated, the formula of the surface of the contact element 8 flows down. In the case of complete filling of empty gas cleaning device according to ed. St. the channels of sand liquid more uniform-№ 1510894, characterized in that, but it is absorbed through the pores into the thickness of the contact-5 in order to increase the efficiency of the angled element. 8. The quality of the disk filter element The coating of the surface 11 of the lacquer edge — on the side of the outlet nozzle, is covered with a hedgehog 13; it excludes spillage of a liquid permeable to the evaporating liquid of the nozzle’s outer side nozzle.