HU200708B - Apparatus for washing respectively absorbing gas - Google Patents

Abstract

The invention relates to a process for scrubbing or absorbing gases which are passed through a closed flow path and during this have contact with a liquid, and an apparatus for carrying out the process having a chamber filled with scrubbing liquid, a suction or pressure aerator, which is connected to a pipe nozzle, and partition walls. The essence of the process according to the invention is that the closed flow path of the gases is restricted by a scrubbing liquid, the gas stream cross-section is sealed off completely into at least two cross-sections by sealing walls, which are in contact with the liquid surface, and, between the sealing walls, is inserted a partition in the surface of which is formed an opening. The gas stream cross-sections between the sealing walls and the partition and through the opening of the partition are formed in such a way that each one is larger than the preceding cross-section but smaller than the succeeding one. In the sealing wall, along the edge in contact with the liquid surface, is formed a turbulence-increasing serration. Along the edge of the sealing wall in contact with the liquid surface, is mounted a baffle plate increasing the turbulence of the gas stream. The essence of the plant according to the invention is that in the path of the gas stream, a plurality of [lacuna] extending as far as the side walls and the cover plate and with ... Original abstract incomplete.

Description

FIELD OF THE INVENTION The present invention relates to an apparatus for scrubbing or absorbing a gas having a fluid-containing compartment, a manifold, suction or discharge fan and a baffle.

Where humidification and cooling of the gas to be purified are permitted, wet gas cleaning may be used. This is done by contacting the gas with water and possibly other liquid liquids. In cases where a homogeneous mixture of gases is to be disassembled or its component recovered as a pure product, one possible action is to absorb the gas by bubbling it through the liquid.

Scrubbers, disintegrators and wetted surface devices are common devices for wet gas cleaning; the devices for liquid absorption are bubbling absorbers. However, all of these devices are bulky, power-intensive, investment and running costs considerable.

Wet sedimentation is a known device in the form of a space with a partition, on which one side is introduced by bubbling air introduced through a layer of water. The dust gets wet when it enters the bottom of the pool. removed by scraper chain in continuous operation; this is the rotoclone (Handbook of Quarrying, k. k, MK Bp. 1958, p. 140). It is also known to use a wet gas purifier, which means that the gas is passed through a resting fluid bed with increasing flow rate while the liquid binds the solid particles floating in the gas (German Patent Publication No. 1920,375).

The disadvantage of the known devices is that the gas passes through the liquid layer once with a constant or increasing flow rate, which must therefore be of relatively high layer thickness for effective cleaning. The deeper the gas passes through the upper level of the liquid layer, the greater the system resistance and thus the power consumption. If the gas flow is high, it will not be able to drop the impurities and liquid droplets it contains.

No. 159,913 is known. A patented Hungarian patent discloses an apparatus for circulating chemical fluid having an axial solution inlet in the center axis of a cylindrical vortex space having a plurality of openings along its circumference. The fluttering member is located in the direction of travel of the gaseous medium prior to the fluid inlet. This technical solution not only absorbs air, but also consumes energy for circulating, pressing and spraying liquid, and consumes significant energy to produce turbulence.

It is also known from U.S. Patent No. 172,187. 'Equipment for the cleaning of polluted air c. A purifying device, which purifies the air in several stages and has vortex tubes which penetrate into the liquid space and which are formed by a double-sided diaphragm and extend through a filled layer into the part of the cleaning space. This device guides the air to be cleaned through the portions of the vortex tubes and the cleaning unit filled with porcelain beads or plastic granules. Even when clean, these obstructions provide significant resistance to the flow of air, and consequently their energy consumption is very high. A further disadvantage of this device is that the filled space is easily clogged and the degree of clogging increases the system's resistance

It is an object of the present invention to provide a wet gas purifier that is small in size, low in energy and has a high purification efficiency, does not substantially absorb the solid gas or liquid droplets, and is portable and repositionable as required.

The invention is based on the discovery that the object is achieved by a device in which specially formed barrier walls and a partition wall between the liquid layer and the gas flow are forced at least twice through the liquid level. Because the shutter walls only touch the surface of the liquid or dive just a few mm into the liquid and the velocity of the gas flowing between the walls is extremely low and decreasing, the resistance of the device and its energy requirement are also low.

The purification of the gas stream is primarily caused by the strong turbulence of the gas stream which is overturned under the specially designed barrier walls which contact the liquid surface by multiple contact and mixing of the liquid with the gas stream. The low and decreasing flow rate of the gas stream results in the dropping of the moistened particles and liquid droplets that may still be carried by the gas stream.

It has also been found that by using a notch extending below the surface of the liquid at the bottom edge of the closure wall in contact with the washing liquid, it forms a band of variable resistance perpendicular to the direction of the gas flow. At the top of the tooth gaps, the gas flow is easier to pass because the resistance is lowest here. The flow of gas between the tooth joints therefore takes place at a variable rate.

The apparatus according to the invention comprises a plurality of sealing walls extending in contact with the washing liquid up to the sidewalls and the roof plate in the gas flow path, and having a plunger-submerged partition wall having an aperture in its plane.

Along the lower edge of the barrier wall, a tooth or turbulence is generated which causes turbulence. the baffle is inclined at an angle to the barrier wall. The cross-sections formed between the barrier walls and the bulkhead and perpendicular to the direction of the gas flow and each opening in the bulkhead are larger than the preceding cross-section and smaller than the subsequent cross-section.

In some gas-washer fluid pairs, colliding plates may be placed in the space before the gas flow exits, in front of the gas outlet nozzle.

Deposited slurry can be removed from the bottom collecting section of the unit. The valuable separated material can be recovered from the slurry.

The apparatus according to the invention is an example of a gas purification system related to environmental protection. Embodiment FIG. In the drawing, Fig. 1 is a vertical sectional view of the apparatus and Fig. 2 is a vertical sectional view A-A of SbrA.

The device is bounded by the roof plate 1, the conical base 2 and the side walls 3, 4,5 and 6. Attached to the 1 roof-2HU 200708 Β plate is the pipe 7 for the introduction of contaminated gas and the pipe 8 for the discharge of purified gas.

The fan must be connected, directly or indirectly, to the manifold 7 or 8, depending on whether the unit is suctioned or pressurized.

In the path of the gas flow, between the side walls 5 and 6, wall-to-wall closures 9 and 10 and partition wall A11 extend deep into the washing liquid 12; an aperture 13 is formed therein which forms the path of the gas stream. The opening 13 can also be formed by having the upper edge of the partition 11 not reaching the roof plate 1. The closure walls 9 and 10 are connected to the lowering gate 1; their lower edges being provided with a toothed ridge 14 which comes into contact with the surface of the molar fluid 12. The baffles 15 are located close to the lower edges of the closure walls 9 and 10 and the angles of the closure walls 9 and 10.

The valve 16 serves to drain the slurry and liquid. The function of the A17 valve is to replenish the fluid and adjust the level.

Under the influence of the suction or pressure fan, the gas enters the fluid collector at the pipe nozzle 7. The gas stream bypasses the barrier walls 10 and 9, while the turbulence caused by the baffles 15 brings the gas stream in intense contact with the washing liquid 12. The gas flow of the baffle A11 is bypassed through the opening 13 or between the upper edge of the baffle all and the roof plate 1. In the adjacent spaces defined by the baffles 9,10 and the bulkhead 11, the cross-sections of the flow formed perpendicular to the direction of the gas flow are increasing in the direction of the gas flow, thereby decreasing the velocity of the gas flow.

The gas drops most of the solid and liquid pollutants that it carries back into the liquid. The gas flow through the nozzle 8 is practically free of impurities.

The main advantages of the method according to the invention can be summarized in that it can be used economically and efficiently for environmental and occupational air purity purposes. Mobile, easily migrated from one place to another as needs change. It requires little power because the resistance of the equipment is low; low operating and investment costs. thus providing state-of-the-art and highly effective gas purification.

Claims (4)

PATENT CLAIMS An apparatus for scrubbing or absorbing a gas having a washer fluid compartment having a suction or discharge fan and a manifold connected to a manifold, characterized in that the gas extends to the side walls (5,6) and the washer (12) with the washing liquid (12). ) has a plurality of closure walls (9,10) and a partition (11) submerged therein with an opening (13) in its plane and immersed in the washing liquid (12). Apparatus according to claim 1, characterized in that there is a tooth (14) along the lower edge of the closing wall (9,10). Apparatus according to claim 1 or 2, characterized in that a baffle plate (15) is inclined at an angle to the lower edge of the closure wall (9,10). 4. Apparatus according to any one of claims 1 to 6, characterized in that the cross-sections perpendicular to the gas flow between the walls (9,10) and the partition (11) and each opening (13) in the partition (II) are larger than the preceding cross-section. smaller than the next cross-section.