Steam generator blowdown apparatus

Abstract

The invention relates to the field of chemical engineering, and discloses a steam generator blowdown apparatus. A plurality of auxiliary blow-off pipes (11) communicate with a main blow-off pipe (13)in a parallel connection mode. Each auxiliary blow-off pipe is provided with at least one pollutant absorption head (9). All the auxiliary blow-off pipes (11) are detachably fixed to T-shaped steel parts (12), and all the T-shaped steel parts are fixed to an inner side wall (7) of a steam generator. Each pollutant absorption head is in the shape of a gourd with a horn opening on the whole and is mainly composed of a horn-shaped pollutant absorption opening (18), a pollutant absorption narrow path (19), a loudbelly-shaped pollutant absorption cavity (20) and a threaded connector (23) which arein seamless connection in sequence. All the auxiliary blow-off pipes communicate with the pollutant absorption heads through pollutant absorption head connectors (24). One ends of the pollutant absorption head connectors are fixedly connected with the auxiliary blow-off pipes, and the other ends of the pollutant absorption head connectors are connected with the threaded connectors in a threaded mode. Compared with the prior art, the steam generator blowdown apparatus is even, reliable and efficient in pollutant discharging, discharging of non-dirty liquid can be effectively avoided, and the service life of the blow-off pipes is effectively prolonged.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a blowdown device for a steam generator. Background technique [0002] Sulfuric acid is an extremely important chemical raw material. The production of sulfuric acid mainly includes the combustion of sulfur-containing raw materials, the oxidation of sulfur dioxide and the absorption of sulfur trioxide. The absorption of sulfur trioxide with concentrated sulfuric acid is an important means of sulfuric acid production. The absorption of sulfur trioxide is an exothermic reaction, and the heat released per ton of sulfuric acid during the absorption process reaches 319KCAL / T. If the heat can be recovered and utilized, it will bring huge economic benefits. In the sulfuric acid industry, no matter whether pyrite is used to make acid, or sulfur and smelting gas are used to make acid, a large amount of waste heat is generated in the production process, and the high and medium temperature ...

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Problems solved by technology

[0005] Some problems will appear in the practical application of the existing sulfuric acid steam generator blowdown device, which will affect the blowdown effect and equipment work efficiency:

[0006] 1. The existing sewage discharge device only relies on one sewage discharge pipe to discharge sewage, and the sewage suction pipe is distributed in a straight line on the sewage discharge pipe. The effective sewage discharge area is small and unevenly distributed, resulting in the inability of timely and efficient suction and discharge of distant sewage or even accumulation;

[0007] 2. In the area near the straight line where the sewage suction pipe is located, because the sewage is discharged quickly, a part of the non-pollution liquid will be filled up, so that the non-pollution liquid that does not need to be discharged will be discharged;

[0008] 3. Several sewage suction pipes are connected to the same sewage pipe, once the sewage pipe is damaged, the whole device will be affected;

[0009] 4. Long-term sewage falling from the mouth of the sewage suction pipe to the bottom of the sewage pipe will cause continuous impact on the bottom of the sewage pipe and affect the life of the sewage pipe

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