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Propylene compressor

A compressor and propylene technology, applied in the field of compressors, can solve the problem that the material cannot be cooled down, and achieve the effect of stable operation and reduced axial thrust

Pending Publication Date: 2021-03-26
SHENYANG SITE MACHINERY MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once it fails and shuts down, it will directly cause the shutdown of the ethylene compressor, the separation system has no refrigerant, the material cannot be cooled, and the system is completely shut down

Method used

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Examples

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Comparison scheme
Effect test

Embodiment 1

[0023] This embodiment 1 is a six-stage centrifugal compressor. The impeller adopts a three-element plus two-element closed-type forging and milling welded impeller. The number of impellers is 6, and the diameter of the impeller is 800mm. The compressor and the steam turbine have separate bases. The compressor and the steam turbine are composed of Diaphragm coupling connection.

Embodiment 2

[0025] This embodiment 2 is a six-stage centrifugal compressor. The impeller adopts three-element plus two-element closed-type forged milling welded impeller. The number of impellers is 6, and the diameter of the impeller is 800mm. The base of the compressor is independent, and the motor is connected with the gearbox. machine form.

Embodiment 3

[0027] Example 3 is a propylene compressor for a 1,000,000-ton / year olefin aromatics joint project. The impeller adopts a three-element plus two-element closed-type forging and milling welded impeller. The number of impellers is 6, and the diameter of the impeller is 800mm. The inlet flow rate is 91571Nm3 / h, inlet pressure 0.136Mpa(A), inlet temperature -40℃ process requirements.

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PUM

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Abstract

The invention discloses a propylene compressor. The propylene compressor is mainly composed of a stator set, a rotor set, a bearing set, a dry gas seal and the like, and is characterized in that (1) the compressor adopts a single-shaft multi-stage centrifugal type, and a single-cylinder three-stage mode is adopted, and the number of the stages are six total; (2) impellers are forged, milled and welded through ternary and binary closed type; (3) medium gas sealing is carried out on two shaft ends by adopting shaft end sealing and series dry gas sealing; (4) a unit adopts a split base, a compressor body and a prime mover have independent bases, and the compressor body is connected with the prime mover through a diaphragm coupling; (5) a shell of the compressor body is divided into an upper body and a lower body from the horizontal plane of a rotating shaft, and the rotating shaft is arranged on the lower shell; (6) the compressor body is provided with three air inlet air ducts and one air outlet air duct; (7) the number of the compressor impellers is six, the diameter of each impeller is 800 mm, the impellers are arranged on a main shaft in sequence, and a balance disc is arranged onthe high-pressure side; and (8) a tilting-pad bearing is adopted as a supporting bearing, the structures same on the two sides are adopted on the two sides of the main shaft, and a thrust bearing isa Kingsbury or Michell bearing.

Description

technical field [0001] The invention relates to the technical field of compressors, in particular to a propylene compressor. Background technique [0002] The ethylene plant uses petroleum or natural gas as raw material, mainly produces high-purity ethylene and propylene, and produces various petrochemical raw materials by-products. Petroleum or natural gas raw materials are pyrolyzed, compressed, and separated in the ethylene plant to obtain ethylene, and at the same time important by-products such as propylene, butadiene, benzene, toluene, and xylene are obtained. [0003] The whole set of ethylene unit includes pyrolysis gas compressor, propylene compressor, ethylene compressor, etc. Among them, the propylene compressor provides the basic refrigerant for the separation system, and forms a cascaded refrigeration system with the ethylene compressor. Once it fails and stops, it will directly cause the shutdown of the ethylene compressor, the separation system has no refrige...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D17/12F04D29/051F04D29/056F04D29/10F04D29/28F04D29/42F04D29/62F04D29/66
CPCF04D17/122F04D29/102F04D29/4206F04D29/4213F04D29/286F04D29/056F04D29/051F04D29/662F04D29/624
Inventor 孙忠良
Owner SHENYANG SITE MACHINERY MFG
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