System and method for treating white smoke plume of desulfurization flue gas

A white and plume technology, applied in chemical instruments and methods, separation methods, gas treatment, etc., can solve problems such as adverse effects on boiler heat utilization efficiency, increase system energy consumption, and affect boilers, so as to improve technical economy and reliability Tonality, reduce the area of ​​heat exchanger, reduce the effect of equipment investment

Pending Publication Date: 2018-05-04
BEIJING SPC ENVIRONMENT PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented method uses an air compressor that works on compressed hot gases from a boiler to reclaim moisture while also making it easier to remove any remaining ash particles by allowing them to pass through another device called a filter before being returned into the furnace again. By doing this, the amount of harmful emissions produced when burning fossil fuels becomes less than what was previously possible due to combustion processes used without exhaust purification devices such as filters. Additionally, the method allows for efficient recovery of waste heat generated within industrial facilities like power plants. Overall, these improvements make the methods more cost-effective and effective treatments for pollution control issues.

Problems solved by technology

This patents describes various technical methods described during combustion processes like burning fossil fuels to remove harmful substances including sulfur oxides, nitrosoxygen compounds, particulate matter, etc., while minimizing loss of valuable resources. These techniques include dry scrubbing systems where the exhaust gases pass over packings containing activated carbon powders called absorbents, cooled mist separators, and filters. Additionally, these techniques involve removing humidity from the flues before they exit into the atmosphere without causing significant negative impact upon both indoor environments and public health concerns.

Method used

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  • System and method for treating white smoke plume of desulfurization flue gas
  • System and method for treating white smoke plume of desulfurization flue gas

Examples

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Embodiment 1

[0038] Attached to the following figure 1 The specific embodiment 1 of the present invention will be described in detail, taking a 300MW coal-fired power generating unit wet desulfurization saturated clean flue gas as an example.

[0039] The local atmospheric pressure in winter is 91.33kPa, the temperature of the high-temperature saturated net flue gas B at the outlet of wet desulfurization equipment 1 is 51.4 °C, and the water vapor content is 14.27%, and enters the evaporator 2; after cooling, the temperature of the low-temperature saturated net flue gas C is 50.0 °C, and the water The steam content is 13.32%, leaving the evaporator 2 and entering the condensing reheater 5; the low-temperature saturated clean flue gas C is heated by the condensing reheater 5 to a temperature of 21.4 °C, and the temperature of the reheated clean flue gas D reaches 71.4 °C, and the water vapor in the flue gas is concentrated. The pressure is only 12.3kPa, which belongs to unsaturated flue gas...

Embodiment 2

[0046] Attached to the following figure 2 The specific embodiment 2 of the present invention will be described in detail, still taking the aforementioned 300MW coal-fired power generating unit wet desulfurization saturated clean flue gas as an example. The water loss of the wet desulfurization system includes four items: the evaporative water volume of the absorption tower, the waste water discharge, the water volume of the gypsum, and the water volume of the external flue gas, totaling about 62.2t / h. In order to achieve "zero water make-up" in the desulfurization system, it is necessary to cool the high-temperature saturated clean flue gas B to 40.9 °C to recover enough water to be used as the process water make-up water for the desulfurization system.

[0047] The high temperature saturated clean flue gas B at the outlet of wet desulfurization equipment 1 has a temperature of 51.4°C and a water vapor content of 14.27%, and enters the evaporator 2; The evaporator 2 enters t...

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Abstract

The invention provides a system and a method for treating white smoke plume of a desulfurization flue gas. According to the system and the method, by virtue of the characteristic that a great deal ofsensible heat and latent heat is released when a high-temperature saturated purified flue gas is cooled and condensed, low-temperature waste heat recycling is achieved by using a compression type heatpump, through refrigerant circulation, low-level heat is promoted into high-level heat, the high-temperature saturated purified flue gas is reheated into a high-temperature unsaturated purified fluegas, a great deal of condensation water is extracted from the desulfurization flue gas, secondary desorption of multiple pollutants such as fume dust and sulfur dioxide is promoted, low-temperature waste heat is recycled by using a heat pump technique, 'white smoke plume' is eliminated, the view effect of flue gas emission is improved, and triple purposes of water conservation, energy conservationand'white plume' treatment are achieved.

Description

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Claims

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Application Information

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Owner BEIJING SPC ENVIRONMENT PROTECTION TECH
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