Coal gasification black water flash steam waste heat steam turbine cascade utilization system

CN121111409BActive Publication Date: 2026-07-10ZHEJIANG BOXU NEW ENERGY TECH CO LTD
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Patent Information

Application Number
CN202511279157.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-09-09
Publication Date
2026-07-10
Estimated Expiration
2045-09-09

AI Technical Summary

Technical Problem

In existing technologies, waste heat recovery from flash steam in coal gasification black water production suffers from heat waste, high system complexity, difficult maintenance, uneven condenser cooling, and scale crystallization, resulting in low efficiency and shortened equipment lifespan.

Method used

A coal gasification black water flash steam turbine cascade utilization system is adopted, including a black water flash steam turbine module and an exhaust steam condensation module. The waste heat of multi-stage flash steam is recovered by using a supplementary condensing steam turbine, and the structure of the evaporative condenser is improved by a scale scraping and water equalization component and a water equalization and descaling component to ensure uniform flow of cooling water and effective heat exchange.

Benefits of technology

It improves the utilization rate and heat exchange efficiency of cooling water, simplifies the waste heat recovery system, reduces system investment, extends the service life of the condenser, and improves the overall performance of the condenser.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present application relates to coal black water treatment technical field, specifically disclose a kind of coal gasification black water flash steam waste heat steam turbine cascade utilization system, including black water flash steam turbine module and exhaust steam condensing module;Black water flash steam turbine module includes high-pressure flash evaporator, low-pressure flash evaporator, vacuum flash evaporator, make-up condensing steam turbine, generator and settling tank, and the water outlet of vacuum flash evaporator is connected with settling tank;Exhaust steam condensing module includes evaporative condenser and condensate pump.The present application is designed by scale removal water uniformizing element, so that from top to bottom fall around heat exchange coil part of cooling water falls on water uniformizing plate and drives water uniformizing plate to rotate, when water uniformizing plate rotates, water on it is thrown out around under the action of centrifugal force, can not be carried out heat exchange cooling water uniform to other heat exchange pipe and carry out heat exchange, so that the flow of cooling water between heat exchange coil is more uniform, improve the utilization of cooling water, to improve heat exchange efficiency.
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Citation Information

Patent Citations

  • Coal gasification black water circulation and black water waste heat recycling system and method

    CN120172477A

  • Coal gasification black water vacuum flash steam low-temperature waste heat energy recovery device

    CN210393787U