Method for collaboratively controlling multi-pollutants produced from waste incineration smokes

A waste incineration and collaborative control technology, applied in separation methods, chemical instruments and methods, air quality improvement, etc., can solve problems such as obstacles to popularization and application, complex processes, high investment and operation costs, and achieve low production and use costs, simple equipment, The effect of low running costs

Active Publication Date: 2013-02-13
SOUTH CHINA INST OF ENVIRONMENTAL SCI MEP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the control method of building separate dust removal, desulfurization, denitrification, and heavy metal removal facilities can effectively control the soot and SO in the coal-fired flue gas 2 , NO X , heavy metals, dioxin and other pollutants, but this control method has problems such as complex process and high investment and operation costs, which hinder its large-scale promotion and application

Method used

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  • Method for collaboratively controlling multi-pollutants produced from waste incineration smokes
  • Method for collaboratively controlling multi-pollutants produced from waste incineration smokes
  • Method for collaboratively controlling multi-pollutants produced from waste incineration smokes

Examples

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Embodiment 1

[0044] The patent No. ZL200810029188.7 and the invention patent titled "Coal-fired flue gas mercury pollutant adsorbent and its preparation method and application" disclose a kind of coal-fired flue gas mercury pollutant adsorbent, and its preparation includes the following specific steps :

[0045] (1) Take a certain amount of dewatered sludge from urban sewage plants, add sawdust additive with a mass fraction of 1.5%, stir evenly, then add solid zinc chloride powder 1 times the weight of dry sludge, stir evenly, and let stand for 24 hours.

[0046] (2) Put the static dewatered sludge into the muffle furnace, heat it under the condition of isolating the air, control the heating rate at 15°C / min, raise the temperature to 175°C and dry for 1.5h, and then heat up to the activation temperature of 550°C, pyrolysis and carbonization for a certain period of 2 hours; after cooling in the system state, the dewatered sludge pyrolysis and carbonization products are obtained.

[0047] (...

Embodiment 2

[0050] The patent No. ZL200810029188.7 and the invention patent titled "Coal-fired flue gas mercury pollutant adsorbent and its preparation method and application" disclose a kind of coal-fired flue gas mercury pollutant adsorbent, and its preparation includes the following specific steps :

[0051] (1) Take a certain amount of dewatered sludge from urban sewage plants, add coconut shell additives with a mass fraction of 1.5%, stir evenly, then add solid potassium hydroxide powder 1 times the weight of dry sludge, mix evenly, and let stand for 24 hours.

[0052] (2) Put the static dewatered sludge into the muffle furnace, heat it under the condition of isolating the air, control the heating rate at 15°C / min, raise the temperature to 175°C and dry for 1.5h, and then heat up to the activation temperature of 550°C ℃, pyrolysis and carbonization for 2.0 hours; after cooling in the system state, the dehydrated sludge pyrolysis and carbonization products are obtained.

[0053] (3) ...

Embodiment 3

[0056] The preparation of a heavy metal ion complexing agent disclosed in the patent application with the application number "201210100123.3" and the name "a heavy metal ion complexing agent and its preparation method and application" includes the following specific steps:

[0057] (1) Raw materials required for preparing 1Kg of heavy metal ion complexing agent: 100g of triethylenetetramine, accounting for 10% of the total; 200g of sodium hydroxide, accounting for 20% of the total; 50g of epichlorohydrin, accounting for the total 5%; CS2250g, accounting for 25% of the total; deionized water 400g, accounting for 40% of the total.

[0058] (2) During the preparation process, first dissolve 200g of sodium hydroxide in 400g of deionized water to obtain a sodium hydroxide solution, take 1 / 3 of the aforementioned lye of the total volume and place it in a three-necked flask with a stirrer and a reflux condenser. The three-necked flask was placed in a water bath at 28°C and stirred at...

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Abstract

The invention discloses a method for collaboratively controlling multi-pollutants produced from waste incineration smokes. By developing a novel compound absorption liquid and improving the structure of the conventional absorption tower, multiple pollutants in waste incineration smokes are simultaneously and efficiently removed in a same device with the adoption of a two-stage serial processing mode of oxidation absorption / complexation and adsorption. The method concretely comprises the following steps of: cleaning and removing SO2, HCl, HF, NOX, heavy metal and part of dioxin in waste incineration smokes by using a mixed absorption liquid of alkali, an oxide addition and a heavy metal ionic complex agent, and stabilizing the heavy metal so as to avoid secondary volatilization of the heavy metal; and further absorbing the dioxin and the heavy metal in the smokes via a demister which is made of an adsorption material and serially connected at the top of the absorption tower so that the discharge of the smokes is finally up to the standard. The invention has the advantages of simple method and device, easiness in operation, running and management, small occupied area, low overall operating cost, high pollutant removing efficiency and the like.

Description

technical field [0001] The invention belongs to the technical field of air pollution control, and in particular relates to a method for coordinated control of multiple pollutants in waste incineration flue gas. Background technique [0002] In recent years, my country's waste incineration has developed rapidly. As of the end of 2007, the total number of waste incineration power plants in China has reached 75, of which 50 have been built and 25 are under construction, with an incineration capacity of more than 40,000 tons per day. At the same time, it is clearly mentioned in the "Eleventh Five-Year Plan" that there are 82 waste incineration plants in the planning layout, among which, 56 incineration plants (accounting for 68%) are planned for waste treatment in the eastern region, and 9 incineration plants are planned for waste treatment in the central region (accounting for 11%), there are 7 incineration plants (accounting for 8%) in the Northeast region, 4 incineration pla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/78B01D53/04B01D53/60B01D53/64B01D53/70B01D53/68
CPCY02A50/20
Inventor 岑超平方平唐志雄陈定盛陈志航陈雄波
Owner SOUTH CHINA INST OF ENVIRONMENTAL SCI MEP
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