SU827135A1 - Plant for cleaning gases from harmful impurities - Google Patents

Description

one

The invention relates to the field of gas purification from harmful impurities in the production of organochlorine products, mainly for the neutralization of accidental emissions from safety valves.

A known installation for cleaning gases from harmful impurities includes a condenser connected to the direct and return refrigerant pipelines, a refrigerant pump, a condensate collector, an absorber, an absorbent pump, an absorbent cooler and an absorbent refrigerator 1.

The disadvantage of this installation is the impossibility of cleaning emergency emissions from safety valves, which are characterized by a variable quantitative and qualitative composition of harmful impurities. Known installation is connected to a common refrigeration system of production and with the sudden intake of a large amount of emissions, the consumption of cold in the system increases dramatically, which leads to disruption of technological production.

The purpose of the invention is to increase the reliability of work in the conditions of variable quantitative and qualitative composition of gases.

This goal is achieved in that the installation is equipped with a refrigerant tank connected to the refrigerant pump suction pipe, a refrigerant return pipe and a refrigerant direct flow pipe, and the outlet of the absorbent collector is connected to the absorbent pump suction pipe.

The drawing shows a diagram of the installation of gas purification from harmful impurities. Installation includes condenser 1, pump

refrigerant 2, condensate collector 3, refrigerant capacity 4, absorber 5, absorbent pump 6, absorbent collector 7, absorbent cooler 8 and chimney 9. The installation works as follows.

Emergency emissions from safety valves containing harmful impurities enter through the manifold into the tube space of the condenser 1. In the annular space of the condenser 1 by pump 2 from

Capacity 4 serves coolant. After returning from the condenser, the return flow returns to the refrigerant 4 capacity. To compensate for the loss of cold, the refrigerant is continuously supplied to the environment into the tank 4.

Claims (1)

Condensed impurities from condenser 1 enter the condensate collector 3, and from there are transferred to production for use or incineration. The uncondensed gases enter the packed absorber 5. The absorbent from collector 7 is fed to refrigerator 8, where it is cooled to the required temperature, and sent to the absorber. Gases come out of the absorber into chimney 9. It is desirable to use high-boiling semi-products of this production as an absorbent, which simplifies its regeneration. Otherwise, any inexpensive and affordable solvent, such as naphtha solvent, xylene, etc., can be used as an absorbent. The spent absorbent is passed to incineration. Nitrogen is continuously supplied to the collector to prevent condensation and absorption of air and with it moisture from entering the system. Depending on the composition of emissions, the condensation and absorption systems can operate both independently and sequentially. The calculation of the condenser surface, the size of the absorber and the cold capacity of the batteries is carried out on the maximum amount of emission from one device and on the worst composition (high content of volatile and inert gases), taking into account that there are almost no simultaneous opening of safety valves on several devices. In the production of organochlorine products, emissions of safety valves sometimes contain hydrogen chloride. In these cases, the emissions after their neutralization by condensation and absorption are sent to the purification of hydrogen chloride in a known manner (washing with water and an alkaline solution and then emitted into the atmosphere). The processes of condensation and absorption are preferably carried out at a temperature of from 10 to 30 ° C. Claims Installation of gas purification from harmful impurities, including a condenser connected to the direct and reverse refrigerant pipelines, a refrigerant pump, a condensate collector, an absorber, an absorbent pump, an absorbent collector and an absorbent cooler, so as to increase the efficiency work in conditions of variable quantitative and qualitative composition of gases, it is equipped with a refrigerant tank connected to the inlet pipe of the refrigerant pump, with a refrigerant return flow pipe and The direct refrigerant flow pipe and the outlet of the absorbent collector are connected to the suction port of the absorbent pump. Sources of information taken into account in the examination 1. Klimenko A. I. Separation of natural hydrocarbon gases, Kiev, 1964, p. 177. Asam Ofpamf / w petok Pr mo u ffOnfOJT f. Rasso / g