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Steam energy multi-stage utilization technology

A technology of energy and technology, applied in the field of steam energy multi-level utilization technology, to achieve the effect of reducing energy consumption

Inactive Publication Date: 2016-08-03
SHANDONG CHAMBROAD PETROCHEMICALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at many problems existing in the existing steam energy utilization process, the present invention provides a steam energy multi-stage utilization process:

Method used

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  • Steam energy multi-stage utilization technology

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Experimental program
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Effect test

Embodiment 1

[0014] A multi-stage steam energy utilization process, which releases the kinetic energy and potential energy of the high-pressure steam to drive the steam turbine to rotate and do work, and at the same time uses the exhaust steam generated at the outlet of the steam turbine as the heat source for the reboiler at the bottom of the tower;

[0015] Then the high-temperature condensed water generated by the bottom reboiler is collected in the condensed water recovery tank, and the high-temperature condensed water is exchanged to 70 degrees through the heat exchange system and sent to the low-temperature bottom reboiler with lower heat requirements as The heat source at the bottom of the tower is utilized.

[0016] The heat exchange system described in this embodiment is a coil heat exchange system.

Embodiment 2

[0018] A multi-stage steam energy utilization process, which releases the kinetic energy and potential energy of the high-pressure steam to drive the steam turbine to rotate and do work, and at the same time uses the exhaust steam generated at the outlet of the steam turbine as the heat source for the reboiler at the bottom of the tower;

[0019] Then the high-temperature condensed water generated by the reboiler at the bottom of the tower is collected in the condensed water recovery tank, and the high-temperature condensed water is exchanged to 40 degrees through the heat exchange system and used as air-cooled water to replace desalted water and used as process water for evaporative air-cooled. The cascade utilization of high-pressure steam energy is achieved. The heat exchange system described in this embodiment is a coil heat exchange system. The heat exchange system described in this embodiment is a coil heat exchange system.

Embodiment 3

[0021] A multi-stage steam energy utilization process, which releases the kinetic energy and potential energy of the high-pressure steam to drive the steam turbine to rotate and do work, and at the same time uses the exhaust steam generated at the outlet of the steam turbine as the heat source for the reboiler at the bottom of the tower;

[0022] Then the high-temperature condensed water generated by the reboiler at the bottom of the tower is collected in the condensed water recovery tank, and the high-temperature condensed water is exchanged to 50 degrees through the heat exchange system and enters each process as heat tracing water. The heat exchange system described in this embodiment is a plate-fin heat exchange system.

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Abstract

The invention relates to a steam energy multi-stage utilization technology. Kinetic energy and potential energy of high-pressure steam are released to drive a steam turbine to rotate to do work, and meanwhile, dead steam generated by an outlet of the steam turbine serves as a heat source of a bottom reboiler; high-temperature condensate water generated by the bottom reboiler is collected to a condensate water recycling tank in a unified manner, and the high-temperature condensate water is subject to heat exchange to be at the specified temperature through a heat exchange system and is conveyed to the low-temperature bottom reboiler with the low needed heat to serve as a tower bottom heat source to be used; medium-temperature condensate water generated in the process serves as heat tracing water feeding to enter all technologies to be subject to heat tracing, finally, generated low-quality hot water meets the air cooling water feeding requirement and replaces demineralized water to serve as evaporation type air cooling process water to be used, and the gradient utilization of high-pressure steam energy is achieved; and the steam energy multi-stage utilization technology is adopted, the maximum utilization efficiency of energy can be achieved, energy consumption of product machining is reduced, competitiveness of a product is improved, and meanwhile the environment is protected.

Description

technical field [0001] The invention relates to the field of petrochemical production, and relates to a multistage steam energy utilization process. Background technique [0002] In the chemical industry, steam accounts for a large proportion of energy consumption, which usually determines the unit consumption of products and market competitiveness. However, the utilization rate of steam energy in chemical plants is generally low, which greatly increases the cost. In the existing technology, high-pressure steam is used as the power source of the steam turbine, and the pressure change of the high-pressure steam drives the impeller to rotate to make the compressor do work, but the exhaust steam discharged from the outlet of the steam turbine has a reduced grade, so it is used in a reboiler with a matching temperature at the bottom of the tower As a heat source at the bottom of the tower, the low-pressure steam energy is recovered, but the high-temperature condensed water produ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D13/02
CPCF01D13/02
Inventor 栾波王耀伟贾庆伟
Owner SHANDONG CHAMBROAD PETROCHEMICALS CO LTD