SU367878A1 - ADSORBER WITH INNER HEATING - Google Patents

Description

The invention relates to a technique for purifying gases, namely, adsorbers for drying gases and removing them from oil and mechanical impurities, and can be used in various parts of the national economy, in the chemical, gas industry, where it is necessary to use purified gases. .

An adsorber is known, which is filled with some kind of solid porous adsorbent for carrying out a drain or gas cleaning. However, the absorption capacity of the adsorbent due to its saturation after some time is significantly reduced. In order to restore the absorption properties of the adsorbent, it is necessary to regenerate it, for which heating elements are placed inside the adsorber, by means of which the mass of adsorbent is heated to a certain temperature while removing the desorbing impurities with the regenerating gas through the drainage. The disadvantages of such an adsorber are the uneven heating of the adsorbent during regeneration, which leads to a decrease in its absorption properties and a reduction in the overall service life, as well as a significant consumption of gas and energy consumption during regeneration.

In order to increase the efficiency of the adsorber, reduce energy and gas costs

To carry out the regeneration of the adsorbent, the visible adsorber heating elements are installed on the same frame with a built-in heat exchanger, forming an insulating layer between the adsorbent layer and the heating elements.

The drawing shows the adsorber, a longitudinal section. Cornus / adsorber is embedded

The lid 2 is a heat transfer. It includes an outer pipe 3, pipes 4, a middle 5 and an internal 6 pipe connected to each other between the upper 7 and lower 8 flanges. In the upper part of the pipe 3 and in the lower part of the pipe 6 there are holes for the passage of gas. In the pipe 6, a heat exchanger 9 of the type “pipe in a pipe with double-sided fins with corrugated tape is installed, and heating pipes fO, for example electrically, with the same fins, are inserted into pipes 4.

To clean the gas from dust and mechanical particles, the lower L and upper 12 filters are installed in the adsorber, in which

heat-resistant material, such as fiberglass canvases. The entire internal free volume of the housing is filled with a solid porous adsorbent 13, which is closed through a hole in the lower neck.

canister, closed with a stopper 14.

Between the heating elements and the adsorbent there is an insulating cavity formed by pipes 3-5, but with which the gas moves, which prevents the adsorbent during regeneration from non-heating and sintering.

To prevent heat loss, the adsorber housing is externally coated with a layer of insulating material 15. Electricity is supplied to the heating elements at the top of the adsorber. Electrical contacts of the heating elements are protected by a cover 16.

The adsorber works as follows.

The gas to be drained and cleaned through shtuzer 17 is fed into the inner cavity of the tenodoobnik, 1 passes along the ribbed, then through drilling in the flange 8 enters the insulating cavity and, having passed the filter 12, goes into the volume filled with the adsorbent.

The passage through the layer of adsorbent, the gas is dried and cleaned of impurities, then through the filter // and the pipes 4 with heating elements into the upper collector 18, from where the annular gap formed by the pipes 6 and, 5 is sent to the outer contour of the heat exchanger and through the nozzle 19 output from the adsorber. In this case, the heating elements are disabled. During operation, the adsorbent is saturated and loses its absorption capacity. In order to regenerate it, gas is supplied through valve 19 in the direction opposite to that described above. Heating

elements are included. The recovery gas is removed through nozzle 17 to the drain. The adsorbent is heated by the hot gas and the heated surface of the pipe 3. Filters 12 and /) clean the gas leaving the adsorber both during drying and cleaning it, and during regeneration of the adsorbent from dust and small particles that are formed during eio partial destruction during the operation time at granule cracking, heating, ingress of moisture droplets, with sharp pressure fluctuations in the adsorber.

The proposed adsorber can be used to purify gas without pressure and

compressed to high pressures.

Subject invention

An adsorber with internal heating for UJKH and gas purification from oil and mechanical impurities, including a housing filled with a solid porous adsorbent adsorbent with heating elements installed inside it, characterized in that in order to increase the efficiency of the adsorber, reduce energy and gas costs In addition, the heating elements are installed on the same frame with an integrated heat exchanger that forms an insulating cavity between the adsorbent layer and the heating elements.

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