RU157990U1 - HELIUM GAS CLEANING DEVICE - Google Patents

Abstract

The utility model relates to gas, oil, chemical and other industries. The system contains membrane modules with cavities of high and low pressure, separated by a semipermeable membrane, the main compressor units. The system comprises production lines and at least one backup compressor unit. Each production line consists of parallel connected main units, at least one standby unit and at least one main compressor unit. The plants combine parallel connected membrane modules, which are in communication with the supply pipe. In each production line of the installation and at least one main compressor unit are directly connected to each other by means of a pipeline for discharging penetrated gas. EFFECT: increased reliability of the system. 1 s.p. f-ly, 1 ill.

Description

The utility model relates to the field of purification of gas mixtures and concentration of individual components of gas mixtures using semipermeable membrane modules and can be used in gas, oil, chemical and other industries.

A device for the purification of natural gas from helium (see RU 2322284 C1, publ. 04/20/2008) containing a membrane module with high and low pressure cavities separated by a semipermeable membrane, the high-pressure cavity is connected on one side with the supply pipe, and of the opposite side with a non-penetrating gas discharge pipe, the low pressure cavity is in communication with a penetrating gas discharge pipe in which the compressor is installed.

A disadvantage of the known device for purifying natural gas from helium is the operation of the device only on small volumes of processed natural gas and the inability to switch to an industrial scale. The transition to an industrial scale will cause instability in the operation of the device and, as a consequence, a decrease in reliability.

A device is known for purifying high pressure natural gas from helium, taken as a prototype (RU 114423 U1, publ. 03/27/2012), containing membrane modules with high and low pressure cavities separated by a semipermeable membrane, as well as main compressor units.

The use of a known device for producing purified natural gas as a target product is not possible for

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industrial flows of natural gas, since it will be associated with the instability of the device and, as a consequence, a decrease in reliability.

The purpose of the utility model is to increase the stability of the natural gas purification device, acting as the target product, on an industrial scale with full preservation of the separating characteristics.

The technical result of the claimed utility model is to increase the reliability of the device.

The specified technical result is achieved due to the fact that the device for purifying natural gas from helium contains membrane modules with high and low pressure cavities separated by a semipermeable membrane, main compressor units, also contains production lines and a backup compressor unit, each production line consists of parallel connected main membrane units, a backup membrane unit and the main compressor unit, membrane units are combined in parallel with Inonii membrane modules cavities with high and low pressure, separated by a semipermeable membrane, the membrane modules in communication with the supply line, membrane and main installation compressor units are interconnected directly via the conduit outlet permeate. Compressor units are connected in parallel.

The utility model is illustrated by the drawing, where figure 1 shows a diagram of a device for purifying natural gas from helium.

The figure 1 shows a device containing production lines (7) and at least one backup compressor unit (6). Processing lines (7) contain the main (1) and backup membrane

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installations (2), supply pipelines (3), pipelines for discharging penetrated gas (4) and main compressor units (5).

A device for purifying natural gas from helium contains production lines (7) and at least one backup compressor unit (6). Each production line (7) contains the main (1) and at least one backup (2) membrane units, as well as at least one main compressor unit (5). Membrane units (1, 2) consist of parallel-connected membrane modules with high and low pressure cavities separated by a semipermeable membrane. Membrane units (1, 2) are connected in parallel. Membrane modules are in communication with the supply pipe (3). Each main membrane unit (1) is connected to at least one main compressor unit (5) via a permeate gas discharge pipe (4). The main compressor units (5) are connected only with units in their production lines (7). Compressor units (5, 6) are connected in parallel.

Membrane modules are grouped by similar values of hydraulic resistance and diffusion characteristics.

The utility model is as follows.

High pressure feed natural gas containing helium is supplied to the membrane modules via an inlet pipe (3). In each membrane module, natural gas is divided into a high pressure stream of non-penetrating gas and a gas stream penetrating through the membrane. The flow of penetrated gas from the main membrane units (2) of the production lines (7) is directed through the pipeline for the removal of penetrated gas (4) to the main compressor units (5) corresponding to the same production line (7). Of the main

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compressor units (5) the gas mixture with helium concentrate is sent through the pipeline for further processing.

Through at least one standby membrane unit (2) of the processing line, there is no gas flow during the main operation of the natural gas purification device. In the event of failure of one or more of the main membrane units (1), a part of the shared gas stream is redirected to the backup membrane unit (2) for separation.

Through at least one backup compressor unit (6) there is no gas flow during the main operation of the natural gas purification device. At least one backup compressor unit (6) is connected if one or more of the main compressor units (5) of the processing lines (7) has failed.

Since this device contains production lines containing backup installations, membrane installations and at least one backup compressor unit through which natural gas can pass, it is characterized by an increase in the reliability of operation.

Claims (2)

1. A device for purifying natural gas from helium containing membrane modules with high and low pressure cavities separated by a semipermeable membrane, main compressor units, characterized in that the device contains production lines and a backup compressor unit, each production line consists of parallel connected main membrane units , backup membrane unit and the main compressor unit, membrane units combine parallel-connected membrane modules with strips At high and low pressure, separated by a semi-permeable membrane, the membrane modules are in communication with the inlet pipe, the membrane units and the main compressor units are directly connected to each other via the permeate gas exhaust pipe. 2. The device according to p. 1, characterized in that the compressor units are connected in parallel.

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