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Low temperature ash-eliminating agent

A kind of deashing agent and low-temperature technology, which is applied in the direction of fuel additives, removal of solid residues, and treatment of combustion products, etc. It can solve the problems of lower ignition point, poor ash removal effect of exhaust gas boilers, and high copper chloride content.

Inactive Publication Date: 2004-11-24
门振镒
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Chinese patent application specification CN1070677A discloses a soot remover composed of sodium nitrate, magnesium oxide, ammonium chloride, zinc oxide, and copper chloride. The content of copper chloride used is high, and the flue gas is acidic. After the furnace is shut down, it will corrode the boiler, especially when it condenses. In addition, the ignition point is not reduced enough, and the cleaning effect of the exhaust gas boiler at the working temperature of 200°C-250°C is not good.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] Embodiment 1, suitable for weakly acidic soot with a pH value above 2.8, the composition and weight percentage of the ash remover are: 1-5% of manganese oxide, 6% of copper chloride, 35% of sodium nitrate, 42% of ammonium chloride, Magnesium oxide 10%, zinc oxide (zinc ash) 2-7%. After burning, the soot disappears, and the pH value of the falling ash is about 6.5.

Embodiment 2

[0009] Embodiment 2 is suitable for acid soot with a pH value below 2.8 and above 2.1. The composition and weight percentage of the ash removal agent are: 2-11% of manganese oxide, 4-6% of copper chloride, 33-42% of sodium nitrate, Ammonium chloride 33-45%, magnesium oxide 1-11%, zinc oxide (zinc ash) 5-10%. After burning, the soot disappears, and the pH value of the falling ash is 7-7.8.

Embodiment 3

[0010] Embodiment 3 is suitable for strong acid soot with a pH value below 2.1. The composition and weight percentage of the ash remover are: 10-15% of manganese oxide, 0% of copper chloride, 30% of sodium nitrate, 40% of ammonium chloride, Magnesium oxide 18%, zinc oxide (zinc ash) 0-2%. After burning, the soot disappears, and the pH value of the falling ash is about 8.

[0011] The preparation method of the present invention is to fully mix uniformly according to the proportion of the components. Generally, manganese oxide, copper chloride, and ammonium chloride are mixed together to form copper ammonium and manganese ammonium complexes, and then sodium nitrate and magnesium oxide are added in sequence. and zinc oxide, and finally make a powder mixture. When in use, use a nozzle to spray into the furnace, and adjust the frequency and amount of injection according to the effect of dust removal. In addition to being used for exhaust gas boilers, the invention can also be use...

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Abstract

The low temperature ash-eliminating agent features its composition including MnO2 1-15 wt%, CuCl2 0-6 wt%, NaNO3 30-42 wt%, NH4Cl 33-45 wt%, MgO 1-18 wt%, and ZnO 1-10 wt%. The present invention introduces MnO2 as main catalyst to reduce the burning point of soot to 200-220 deg.c. The low temperature ash-eliminating agent is used in various boilers, and through the common effect of the said components on soot, the carbon in soot is burnt out at 200-250 deg.c to reduce exhausted SO2 and NOx while protecting heat conducting area.

Description

technical field [0001] The present invention is a mixed agent added to flue or furnace to remove boiler heating surface soot (also known as soot or soot), especially a low-temperature ash remover for removing waste gas (waste heat) boiler soot . Background technique [0002] The ash remover products can be seen in the American Drew company's "Omiao Neng" soot remover and the British Bilangling PN1001 soot remover; British patent 1378882 and German patent 2413520 also have relevant records. Most of the pharmaceutical components they use are selected from the following compounds: ammonium chloride, copper chloride, sodium chloride, ferric chloride, ammonium nitrate, potassium nitrate, magnesium carbonate, calcium carbonate, sodium sulfate, ferrous sulfate, copper powder , paraffin, etc. Such as the British patent record with potassium nitrate, ammonium nitrate, basic magnesium carbonate to form a soot scavenger, and the German patent record to form a soot scavenger with ammo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L10/06F23J3/00F28G9/00
Inventor 门振镒
Owner 门振镒
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