Process method for increasing low-temperature heat utilization efficiency of arene device and low-temperature heat utilization system of arene device

A process method and low-temperature heat technology, applied in the field of aromatics industry, can solve the problems of indirect use of heat and low efficiency, and achieve the effects of saving investment and production and operation costs, low energy consumption, and energy consumption of equipment

Pending Publication Date: 2019-11-15
SINOPEC ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For low-temperature heat energy, ORC (Organic Rankine Cycle) or Kalina cycle is generally used for power generation and utilization, but this method uses indirect heat, and the efficiency is low

Method used

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  • Process method for increasing low-temperature heat utilization efficiency of arene device and low-temperature heat utilization system of arene device
  • Process method for increasing low-temperature heat utilization efficiency of arene device and low-temperature heat utilization system of arene device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Such as figure 1 As shown, the low-pressure steam produced by the aromatics plant is boosted by the screw compressor to prepare boosted steam. The screw compressor is used for boosting the pressure. For steam heating equipment. This process can produce 130t / h of boosted steam.

Embodiment 2

[0035] Such as figure 2 As shown, the low-pressure steam generated by the aromatics plant is boosted by the screw compressor to prepare boosted steam, and the boost uses a screw compressor, and the driving form is electric drive. Condensed water is sprayed into the compressor inlet to eliminate the superheat at the compressor outlet. After the boost is completed, the steam is merged into the steam pipe network of the factory. This process can produce 220t / h of boosted steam.

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Abstract

The invention belongs to the technical field of arene industry and provides a process method for increasing low-temperature heat utilization efficiency of an arene device and a low-temperature heat utilization system of the arene device. The process method comprises the steps: boosting steam generated by the arene device by utilizing a screw-type compressor so as to prepare boosted steam, and applying the boosted steam to steam heating equipment and/or merging the boosted steam into a factory steam pipe system. The process method provided by the invention can be used for effectively increasingthe low-temperature heat utilization efficiency of the arene device, lowering the energy consumption of the arene device and reducing the operating cost of enterprises.

Description

technical field [0001] The invention belongs to the technical field of the aromatic hydrocarbon industry, and in particular relates to a process method for improving the low-temperature heat utilization efficiency of an aromatic hydrocarbon device and a low-temperature heat utilization system of the aromatic hydrocarbon device. Background technique [0002] The aromatics unit is one of the core raw material units in the chemical fiber industry. It uses straight-run, hydrocracked naphtha or ethylene pyrolysis gasoline as raw materials to produce at least one aromatic hydrocarbon in benzene, p-xylene, m-xylene and ortho-xylene product. [0003] A lot of low-grade heat energy in aromatics plants cannot be utilized. Therefore, low-temperature heat utilization in aromatics plants has become an important means of energy saving and consumption reduction in aromatics plants. At present, the low-temperature heat generated by the aromatics plant is mostly used to generate hot water o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/00B01D3/00B01D3/42F04D25/04
CPCB01D3/00B01D3/42B01J19/0006F04D25/04
Inventor 王婷刘永芳姜晓花
Owner SINOPEC ENG
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