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Device system and method for staged water supply and cascade recycling of wet cooling unit

A technology for water supply systems and units, applied in separation methods, boiler cleaning devices, chemical instruments and methods, etc., can solve the problems of unsuitability for large-scale popularization, high system investment and high maintenance costs, and achieve obvious economic and environmental benefits. The effect of low operation and management costs and reduced demand

Active Publication Date: 2021-10-15
SHANGHAI POWER EQUIP RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this management method and system have high investment and high maintenance costs, and are not suitable for large-scale promotion and use.

Method used

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  • Device system and method for staged water supply and cascade recycling of wet cooling unit
  • Device system and method for staged water supply and cascade recycling of wet cooling unit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0113] This embodiment provides a device system for cascaded reuse of wet-cooling unit graded water supply. cycle connected.

[0114] The primary water supply system includes a source water treatment unit and a circulating cooling water unit connected in sequence, and the circulating cooling water unit is connected to the boiler feed water treatment unit in the secondary water supply system.

[0115] The secondary water supply system includes a boiler feed water treatment unit, a thermal unit, a condensate fine treatment unit, a low-salt wastewater treatment unit, a high-salt reuse water treatment unit, a condenser unit and an auxiliary cooling water unit. The low-salt wastewater outlet pipe of the boiler feed water treatment unit and the low-salt wastewater outlet pipe of the condensate polishing unit are connected to the low-salt wastewater treatment unit, and the outlet pipe of the low-salt wastewater treatment unit is connected to the circulating cooling water unit; The h...

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Abstract

The invention provides a device system and method for staged water supply and cascade recycling of a wet cooling unit, the device system comprises a first-stage water supply system, a second-stage water supply system and a third-stage water supply system which are connected in sequence, and effluent of a boiler make-up water treatment unit and effluent of a condensed water precision treatment unit in the wet cooling unit are subjected to quality-divided recycling and cascade utilization; the method using the device system is low in operation and management cost, realizes zero water taking of surface source water and zero discharge of waste water of the wet cooling unit thermal power plant, reduces environmental pollution, and has obvious economic benefits and environmental benefits.

Description

technical field [0001] The invention relates to the technical field of operation of wet-cooling units in thermal power plants, in particular to a device system and method for step-by-step reuse of water supply for wet-cooling units. Background technique [0002] Thermal power plants and thermal power plants are large industrial water consumers, and they produce various types of wastewater. In recent years, as environmental protection requirements have become more and more stringent, new requirements for zero water intake and zero discharge of wastewater have been put forward in the power industry, referred to as "double zero". "Zero water intake" means not taking a drop of clean water to the surface water environment, and "zero discharge" means not discharging a drop of waste water into the surface water environment. It is a new path advocated by the coordinated development of clean energy and the ecological environment. [0003] However, the "double zero" requirement still...

Claims

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Application Information

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IPC IPC(8): C02F9/02C02F9/04C02F9/06C02F9/08C02F9/10B01D47/06B01D53/18B01D53/14B01J19/06F22B37/50F22D11/06C02F103/02C02F103/18C02F103/34
CPCC02F9/00B01D47/06B01D53/18B01D53/1456B01J19/06F22B37/50F22D11/06C02F2209/10C02F2201/007C02F2103/18C02F2103/34C02F1/28C02F1/42C02F1/001C02F1/5281C02F2001/007C02F1/02C02F1/44C02F1/4693C02F1/06C02F1/16C02F2103/023C02F2209/05
Inventor 张娟刘平元陶丽赵亮何翔彭龙飞姚旭东孟永杰
Owner SHANGHAI POWER EQUIP RES INST
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