Method and system for combined treatment of boiler smoke and alkaline waste water and waste heat utilization

A technology for boiler flue gas and combined treatment, which is applied in separation methods, chemical instruments and methods, and the use of liquid separation agents, can solve the problems of high operating costs, low operating costs, and low desulfurization efficiency. High efficiency and the effect of reducing enterprise operating costs

Active Publication Date: 2011-09-07
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to design a boiler flue gas desulfurization and dust removal method with small capital investment, low operating cost and high desulfurization efficiency in view of the problems of larg

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  • Method and system for combined treatment of boiler smoke and alkaline waste water and waste heat utilization
  • Method and system for combined treatment of boiler smoke and alkaline waste water and waste heat utilization

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Embodiment

[0024] from figure 1 It can be seen from the shown technological process that the method of the present invention is to send the alkaline waste water to the integrated circulation pool 1 after primary filtration, and to adjust the water quality and quantity; 2 Intense contact with the flue gas for desulfurization and dust removal; the waste water from the integrated desulfurization and dust removal device 2 is sent to the separation sedimentation tank 3, and after removing the flue gas dust in it, the temperature is detected by the temperature sensor 4; if the waste water from the sedimentation tank 3 When the temperature of the wastewater reaches the set value, it is filtered and then sent to the water-water heat exchanger 5 for heat exchange with tap water; Sent to waste liquid pool 12.

[0025] The comprehensive circulation tank 1 wherein is divided into two parts, the front part is the lye tank 11, and the rear part is the waste liquid tank 12, and the middle part is sepa...

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Abstract

The invention discloses a method and system for combined treatment of boiler smoke and alkaline waste water and waste heat utilization. The method belongs to a waste water and exhaust gas processing method. Firstly, alkaline waste water is sent into an alkali liquor pool so as to evenly stir water quality and water amount; then, the obtained mixture is sent into an integral desulfuration dust collector; the waste water discharged from the desulfuration dust collector is sent to a water-water heat exchanger or is directly sent to an effluent pool after being detected by a temperature sensor; meanwhile, boiler smoke is sent to the integral desulfuration dust collector for desulfuration and dust collection after being subjected to waste heat recovery. Different from the traditional smoke desulfuration and dust collection method, the method provided by the invention has the advantages that an aeration mode is adopted to cause the smoke and the waste water to intensively contact, thereby overcoming the problems of big capital construction investment and high operation cost or low desulfuration efficiency of the traditional method; meanwhile, smoke desulfuration, dust collection, smoke waste heat recovery and waste water waste heat recovery are cooperatively controlled; and low-grade waste heat is effectively recovered while the high-efficiency desulfuration and dust collection effect is guaranteed.

Description

technical field [0001] The invention provides a method and system for combined treatment of boiler flue gas and alkaline waste water and utilization of waste heat, in particular to a joint treatment of coal-fired boiler flue gas with high sulfur content and alkaline industrial waste water, realizing waste treatment The waste method realizes the recovery and utilization of waste heat while treating waste. Background technique [0002] The flue gas produced by coal-fired boilers and oil-fired boilers contains a large amount of SO 2 . At present, the wet method is usually used to desulfurize the flue gas, and 90% of the wet method is the lime / limestone-gypsum wet method, and the desulfurization efficiency is relatively high. However, there has been no breakthrough in this technology in my country. The system is mainly imported from Japan, and 70% of small and medium-sized boiler companies (1 ton to 35 tons) in China cannot afford the massive infrastructure investment and high...

Claims

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Application Information

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IPC IPC(8): B01D53/78B01D53/48B01D47/02
CPCY02P70/10
Inventor 熊祖鸿尹华郭华芳赵丹丹
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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