SU1357054A1 - Method of primary regeneration of adsorbent in units of complex cleaning of gases - Google Patents

Abstract

The invention relates to the field of gas purification by adsorbents, the regeneration of which is carried out by a hot gas passing through the adsorbent. The purpose of the invention is to reduce the duration of the primary regeneration of the adsorbent newly loaded into the cleaning unit, reducing the labor intensity and energy consumption for its implementation. After adsorption of the adsorbent, cooling is conducted by air closed in a closed loop, cross-linked to the air after the compressor. At the same time, air from the adsorber is directed to the intake of the gas blower and through the heat exchanger back to the adsorbers. The make-up of the circuit is carried out by supplying choked-up air to the inlet of the blower. When the system is started up, each of the adsorbers is flushed with a direct stream of purified air for 1 hour. 1 sludge. i SL 00 cd vl about cd 4

Description

11357054

refers to the region

im p ri

gas cleaning by adsorbents, which are regenerated by hot gas passing through the layer of adsorbent.

The purpose of the invention is to reduce energy consumption and process time.

The drawing shows the block diagram of the integrated cleaning that implements the proposed method.

The block diagram of the integrated gas cleaning consists of compressor 1, refrigerator 2, moisture separator 3, Drossel 4, gas blower 5, heater 6, adsorbers 7 and 8, refrigerator 9 and heat exchanger 10. I

Since the regeneration circuit may have in its nodes leaks, through which leakage of regenerating gas occurs, circulating in

5, it is possible to feed the closed loop, for which as the pressure decreases at the inlet of the gas blower 5, through the throttle 4, such quantity is supplied

fO of throttled air that compensates for these losses. Impurities of C02 and moisture entering with make-up air are also absorbed by the adsorbent inlet layers. Cooling process

t5 is carried out until the temperature after the adsorber 7 (8) is 5-8 ° C. Adsorber 7 (8) is ready for operation in the cleaning mode. After both adsorbers 7 and 8 have been regenerated, the unit is ready for operation.

During the start-up of the installation, each of the adsorbers is flushed with a direct stream of purified air for one

20

The primary regeneration of the proposed method is carried out as follows.

Atmospheric air is compressed in the compressor 1 to the working pressure, cooled in the refrigerator 2, the amount of impurities is exempt from cable moisture in the air.

3, the throttles are throttled, which makes it possible to remove from them

 With mudflow 4, goes to the suction blower 5,

is compressed to a pressure of, for example, 0.6 kgf / cm, ensuring its passage along the regeneration circuit, in JQ quantity, for example, 5-6 thousand nm / h, passes through the heater 6, is heated to a predetermined temperature, for example, to regenerate zeolite to 350 -400 ° C, passes the adsorber 7 (8) and is emitted into the atmosphere. After the adsorbent warms up to

 and moisture, which settled on the weekend, for the direct flow, adsorbent layers.

The proposed method allows to reduce energy consumption, labor intensity, reduce the time of primary regeneration and to obtain two regenerated adsorbers. These advantages are achieved by cooling the regenerated adsorbers in a closed loop, since in this case the regenerated adsorber is only slightly insignificantly contaminated with COj because, once passed through the adsorber, the air previously into the atmosphere through holo-

n cooling comes already free

280 C at the outlet of the adsorber 7 (8), the heater is turned off, and discharged

Dilac .9 serves on the suction of the gas blower 5 and returns to the regeneration circuit. The contour is closed. The air from the gas blower 5, cooled in the heat exchanger 10

from COj and moisture, and this is pollution

Claims (1)

removed during purging. Invention Formula The method of primary regeneration to 0–5 ° C, are fed for cooling to the adsorbent in the blocks of the complex purifier 7 (8). In the circuit circulates gas streams, including desorption and subsequent cooling with throttled air, precompressed to the operating pressure and passed one and the same gas in a volume equal to the volume of the circuit, for example 50-100 m for a cleaning unit with a capacity of 32 thousand "by the air being cleaned and a working pressure of 32 kg / s. As soon as the first in the course of the cooling air the layers of the adsorbent are cooled to operating temperatures, the impurities C0, j and the moisture contained in the gas volume of the circuit are absorbed by these layers, and the subsequent layers of the adsorbent are cooled with purified CO and dry air. Since the regeneration circuit may have in its nodes leaks, through which leakage of regenerating gas occurs, circulating in contour, it is possible to feed the closed loop, for which as the pressure decreases at the inlet of the blower 5 through the throttle 4 serves such an amount choked air that compensates for these losses. Impurities of C02 and moisture entering with make-up air are also absorbed by the adsorbent inlet layers. Cooling process lead to the temperature behind the adsorber 7 (8) 5-8 ° C. Adsorber 7 (8) is ready for operation in the cleaning mode. After both adsorbers 7 and 8 have been regenerated, the unit is ready for operation. During the start-up of the installation, each of the adsorbers is flushed with a direct stream of purified air for one minor impurities hours that allows you to take out of them from COj and moisture, and this is pollution  of the adsorbent in the blocks of complex purification gas streams, including desorption and subsequent cooling with throttled air, precompressed to the operating pressure and passed 50 then a refrigerator and a moisture separator, characterized in that, in order to reduce energy consumption and process time, the cooling is conducted in a closed loop, wherein 55, the circuit is fed by supplying shrosselirovannogo air to the inlet of the blower, and at the start-up of the installation the adsorbent is flushed with cleaned air for one hour. ti - {XH HXl-I 10 x}. Compiled by A.Sondor Editor I.Gorna Tehred M.Didyk Corrector L.Patay Order 5919/4 Circulation 657 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, ul, Proektna, 4