Energy-saving discharging-reducing fire coal synergistic addition agent

A technology of synergistic additive, energy saving and emission reduction, applied in the field of industrial additives, which can solve the problems of short combustion support time, large dosage and high production cost

Inactive Publication Date: 2008-02-13

赵宏

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AI-Extracted Technical Summary

Problems solved by technology

[0004] Chinese patents, such as 0106347.9, 981007116, etc., have disclosed some coal-burning combustion-supporting agen...

Abstract

The invention discloses an additive capable for enhancing energy-conservation and emission-reduction of coals. The product is produced by mixing matrix material, active material and soda lime according to a proper ratio (calculated by weight percent) of 20-30 percent : 30-60 percent : 20-40 percent. The matrix material refers to one of or a mixture of several materials of zeolite molecular sieve, kaolin, bentonite and flyash. The active material consists of oxidant and catalyst. The soda lime is produced by adding industrial solution to limestone, mainly used for swelling and sulfur solidifying. The additive has eminent effect in improving energy conservation and energy efficiency, and capable to reduce emission of flue gas and other harmful gases. The additive is also characterized by simple production process, low cost, small dosage and user-friendly features.

Application Domain

Solid fuels

Technology Topic

Molecular sieveCoal +10

Examples

Experimental program(2)

Example Embodiment

[0023] Example 1:

[0024] Base material selection: Bentonite 15 kg

[0025] Fly ash 10 kg

[0026] Active material selection: potassium permanganate 5 kg

[0027] Potassium chlorate 15 kg

[0028] Potassium perchlorate 10 kg

[0029] Ferric nitrate 12 kg

[0030] Ammonium nitrate 8 kg

[0031] Soda lime ingredients selection: industrial sodium chloride 15 kg

[0032] Limestone 10 kg

[0033] Implementation steps:

[0034] 1) Fully mix 15 kg of bentonite and 10 kg of fly ash to prepare 25 kg of Mixture A for use.

[0035] 2) Prepare 5 kilograms of potassium permanganate into a 45% aqueous solution, soak 5 kilograms of mixture A in the aqueous solution for 24 hours, and bake at 60° C. for 1 hour to obtain product A.

[0036] 3) 15 kg of potassium chlorate, 10 kg of potassium perchlorate, 12 kg of ferric nitrate, 8 kg of ammonium nitrate, and 5 kg of industrial sodium chloride are prepared into a 60% aqueous solution, and 20 kg of mixture A is soaked in the solution for 24 hours and dried at 80°C Dry for 1 hour to obtain product B.

[0037] 4) Prepare 10 kilograms of industrial sodium chloride into a saturated aqueous solution, add it to 10 kilograms of limestone, and obtain C product after the reaction is complete and dried.

[0038] 5) The A, B, and C products are fully mixed and ball milled to obtain 100 kilograms of finished products.

Example Embodiment

[0039] Example 2:

[0040] Base material selection: Bentonite 15 kg

[0041] Fly ash 10 kg

[0042] Zeolite 15 kg

[0043] Active material selection: potassium permanganate 3 kg

[0044] Potassium chlorate 8 kg

[0045] Potassium perchlorate 8 kg

[0046] Ferric nitrate 10 kg

[0047] Ammonium molybdate 6 kg

[0048] Soda lime ingredients selection: industrial sodium chloride 15 kg

[0049] Limestone 10 kg

[0050] Implementation steps:

[0051] 1) Fully mix 15 kg of bentonite, 10 kg of fly ash and 15 kg of zeolite to prepare 40 kg of Mixture A for use.

[0052] 2) Prepare 3 kg of potassium permanganate into a 45% aqueous solution, soak 5 kg of mixture A in the aqueous solution for 24 hours, and bake at 60° C. for 1 hour to obtain product A.

[0053] 3) Mix 8 kg of potassium chlorate, 8 kg of potassium perchlorate, 10 kg of ferric nitrate, 6 kg of ammonium molybdate, and 5 kg of industrial sodium chloride into a 60% aqueous solution, and soak 35 kg of mixture A in the solution for 24 hours at 80°C Dry for 1 hour to obtain product B.

[0054] 4) Prepare 10 kilograms of industrial sodium chloride into a saturated aqueous solution, add it to 10 kilograms of limestone, and obtain C product after the reaction is complete and dried.

[0055] 5) The A, B, and C products are fully mixed and ball milled to obtain 100 kilograms of finished products.

[0056] An energy-saving and emission-reducing coal-fired synergistic additive prepared by the above-mentioned embodiments can be used by directly putting 0.05-0.2% by weight of the coal-fired additive into the furnace. It can also be mixed into the coal before the furnace or in the coal preparation plant at the amount of 0.05-0.2% by weight of the coal-burning additive.

[0057] The present invention is prepared by using a matrix material to fully adsorb the active material and then fully mixing with soda lime, so that the active material of the additive has higher activity and better stability, so the additive has high coal-saving efficiency and high thermal efficiency. , The sulfur fixation effect is remarkable, the dosage is small, and the method of delivery is simple.

[0058] Table 1 shows the comparative data of coal consumption before and after the use of the energy-saving and emission-reducing coal-fired synergistic additive of the present invention.

[0059] Table 1 Unit: kg

[0060]

[0061] Note: In the experiment, an energy-saving and emission-reducing coal-fired synergistic additive prepared in Example 1 was added at 0.1%.

[0062] It can be seen from the table that after adding the additive of the present invention, the amount of coal used is obviously reduced, and the reduction range is up to 31%, so the coal saving efficiency is high.

PUM

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