SU915909A1 - Scrubber - Google Patents

Description

The invention relates to devices for gas purification from solid particles and can be used, for example, in a power system.

The closest to the proposed technical essence and the achieved result is a scrubber, including a cylindrical body with a conical bottom, inlet, tank for irrigating water with tangential ₁₀ nozzles M. ..

A disadvantage of the known device yavlyatsya low efficiency and reliability of its operation due to the fact that for prior tempera- _{5-temperature-humidity-conditioning} of large volumes of gas must be used very large number of scrubbers. In addition, with a large number of apparatuses, the layout of the gas ducts becomes complicated, which is especially aggravated by the presence of air ducts and other large-size pipelines of the block.

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Reducing the number of devices by simply proportional increase in the geometric dimensions of the cylindrical body and the inlet pipe also can not be done,

Since the diameter of the scrubber per unit area of the cross section decreases with increasing diameter, the specific water consumption also decreases. When sufficiently large diameters are reached, it may be that the amount of water irrigating the inner surface is not enough to transport the collected ash, and in the end, a film of water can even dry

According to the ash collection conditions, it is extremely unprofitable to increase the width of the inlet duct, and a disproportionate increase in the height of the inlet manifold makes it practically impossible to accommodate it in the allotted volume.

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The purpose of the invention is to increase the efficiency and reliability of work.

This goal is achieved by the fact that in a scrubber that includes a housing with a bottom, an inlet nozzle, a tank for irrigating water 5 with nozzles, the inlet nozzle is equipped with a vertical partition dividing it into two sections, the inner of which is tangentially connected to the hull, and the outer one is equipped with a cochlear a box with a gas outlet opening into the housing located opposite the gas outlet opening from the inner section, wherein the tank for irrigating water <5 is annular and has a common wall with the housing.

It is advisable, with the aim of ensuring the possibility of controlling the temperature and moisture content of the gas, to provide Scrub-20 ber with a nozzle installed in one of the sections of the inlet nozzle.

FIG. 1 shows a scrubber in axonometric view; in fig. 2 - the same, section 25 along the axis of the inlet nozzle.

The scrubber contains a cylindrical body 1 with a conical bottom 2, an inlet 3, divided by partition A into two sections 5 and 6, a container 7 for irrigation water, nozzles 8. The external section 6 has a cochlear duct 9, while the gas outlet hole 10 out of the box is located opposite the opening 11 of the gas from the ₃₅ inner section.

In one of the sections of the nozzle 3 is installed nozzle 12 thin scrolling water.

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Scrubber works as follows.

Dusty flue gas after the air preheater of the boiler through the pipe 3 and the holes 10 and 11, conjugated raspolo- ₄₅ in the housing 1 of the scrubber, the scrubber and comes into rotational movement become complicated. Irrigation water is supplied to the tanks 7> in which it is heated by the wall through the common with the cylindrical body 1 and from which it enters the nozzles .8 that create a continuous film on the inner surface of the scrubber that captures ash particles and evaporates due to its contact with hot flue gases . In the lower tank 7 water flows from the upper tank.

The water film after flowing from the upper nozzles is heated to a temperature corresponding to the pressure of water vapor in the flue gases, and begins to evaporate. Since the inner surface of the scrubber is irrigated with heated water, the heating section up to the saturation temperature has a small height, so that the heat of the cooling flue gases is spent on the useful evaporation of water.

The concentration of ash particles in the film increases as a result of its continuous evaporation and the entrainment of all new ash particles. The thickness of the irrigating film decreases as a result of evaporation of water. At a certain height of the scrubber, the concentration of the pulp increases to a value when its fluidity deteriorates. At this point, the installed additional tank, into which heated water enters from the upper tank, again flows out of water and again forms a film of the required thickness, which eliminates the formation of ash deposits and ensures the normal removal of the mixture of water and ash from the scrubber. With an increase in the calculated gas temperature values, the water fine cutting nozzle located in one or both sections of the nozzle 3 is turned on. required size. ·

The proposed gas supply to the scrubber reduces the size of the apparatus and its metal content.

In addition, the location of tanks for irrigating water directly on the wall of the scrubber increases the reliability of its power in the winter. Since the tank and the scrubber have a common wall, the irrigation water is constantly heated by flue gases, as a result of which its freezing is excluded.

Claims (2)

Claim 1. A scrubber comprising a cylindrical body with a conical bottom, an inlet nozzle, a tank for irrigating water with tangential nozzles, which differs from 5. 915909 6 in order to increase the efficiency and reliability of operation, the inlet is equipped with a vertical partition, 'separating it into two sections, the inner one of which is connected to the body 5 tangentially, and the outer one is equipped with a coiled box with a gas outlet hole in the body opposite the gas outlet hole of the inner section, while the irrigation water tank ¹⁰ is annular and has with the body common wall. 2. Scrubber pop. ^ characterized in that, in order to ensure the possibility of regulating the temperature and moisture content of the gas, it is equipped with a nozzle installed in one of the sections of the inlet nozzle.