High-concentration odor combustion device with jacket cooling air

Abstract

The invention discloses a high-concentration odor combustion device with jacket cooling air. The high-concentration odor combustion device comprises a gun barrel, wherein a handle is arranged on the gun barrel; the rear end of the gun barrel is communicated with a metal hose; the high-concentration odor combustion device also comprises a sleeve; two ends of the sleeve are provided with holes; the front part of the gun barrel is sleeved in the sleeve; the front end of the gun barrel is connected with a gun head; the gun head is arranged in the sleeve; a cooling air channel is formed between an inner wall of the sleeve and an outer wall of the gun barrel; a cooling medium air inlet pipe is arranged on the wall of the sleeve; and a hole formed in the rear end of the sleeve and the wall of the gun barrel are sealed. The high-concentration odor combustion device is simple in structure and convenient to operate, detach and maintain; the combustion gun is cooled and protected and is prevented from being burnt when the high-concentration odor amount is insufficient, and the service life of the combustion gun is prolonged; the high-concentration odor is fully and stably combusted, detonation is avoided, tempering is avoided, and the safety coefficient is high; and moreover, according to the sleeve, the phenomenon that the combustion gun head is polluted by alkali ash in the furnace, so that the blocking of the combustion hole can be avoided.

Description

technical field [0001] The invention belongs to the combustion technology of an alkali recovery boiler in the pulping and papermaking industry, and in particular relates to a spray gun for burning high-concentration odor in an alkali recovery boiler. Background technique [0002] The kraft pulping process is currently the most widely used pulping technology, which uses sodium hydroxide and sodium sulfide to separate lignin from wood chips to obtain paper fibers. The sodium sulfide added in the pulping process will generate sulfur-containing compounds through chemical reactions, some of which are sulfur-containing non-condensable gases, such as hydrogen sulfide (H 2 S), methyl mercaptan (CH 3 SH), methyl sulfide (CH 3 SCH 3 ), dimethyl disulfide (CH 3 SSCH 3 ), etc., have a strong pungent odor. These sulfur-containing non-condensable gases will escape during the pulping process and mix with air and water vapor, which is called malodorous gas. The emission of odor has b...

AI Technical Summary

Problems solved by technology

At present, the high-concentration odor combustion device used in pulp mills directly borrows gas guns or oil guns, which has a complex structure, is easy to burn out, and has a short service life; the combustion is unstable and the safety factor is not high

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