ASME Standard Boiler Convection Tube Assembled With Steam Drum Receive Heat From Flue Gas

Convection tube description

Convection tube is the convection heating surface of boiler. Its function is to absorb the heat of high temperature flue gas, increase the boiler heating surface.

The heat absorption of convection tube bundle is related to the flow rate of flue, the arrangement of pipes and the scour of flue gas. There are several kinds of convection tube arrangement and flue gas scour tube bundle.

Difference between convection tube and water wall tube

The difference between boiler convection tube bundle and water wall tube;

1, the heat transfer mode is different: in the boiler directly heated to produce saturated steam heating surface called evaporation heating surface. Including water wall tube and convection tube bundle, water wall is mainly through the way of radiation heat transfer, the heat transfer furnace to the pot water in the tube, so called radiation heating surface. Convective evaporative tube bundle receives heat from flue gas by means of convective heat transfer, so it is called convective heating surface.

2, the location is different: the water wall is arranged around the furnace, and the convection tube bundle is arranged in the middle and rear of the furnace.

Hua Dong Boiler Co., Ltd. is a high-tech enterprise specialized in manufacturing boilers. Established in early 1985s, has two manufacturing bases, this company covers 400,000㎡ with fixed assets amounting to USD 110,000,000. There are 1100 employees including 150 technicians and 600 coded welders. Hua Dong holds the manufacturing licenses for Grade A boilers and Grade A1&A2 pressure vessels issued by Chinese General Administration of Quality Supervision, Inspection and Quarantine; also it holds the "S" and "U" "NB" stamps issued by American Society of Mechanical Engineers; meanwhile, this Company has passed the certification of ISO9001, SO3834, EN12952 Quality Management System.

"Hua Dong" boilers include Utility Boiler, HRSG Boiler, coal-fired , oil(gas) -fired, coal-water-slurry-fired and garbage-fired steam/hot water boilers, organic heat carrier boilers, etc., and Boiler spare parts (Economizer, Finned tube, Header, Steam drum, Superheater, Water wall panel, Air preheater, Cyclone separator, etc., which are widely used in power generation, heat supply, chemical engineering, textile, food, paper, road building, plastic, rubber and wood working industries. "HD" boilers are honored as "Famous Production in Jiangsu Province", " Jiangsu High-Tech Product" and "Jiangsu Energy-Saving Product". "HD" brand is a "Famous Brand in Jiangsu Province". We are a qualified supplier for the top three boiler manufacturers in China(Harbin Boiler Co., Ltd., Dong Fang Boiler Group Co., Ltd., Shanghai Boiler Works Ltd.,). So far, Hua Dong Boilers have served 10000 customers, which sell well all over China and are exported to USA, Australia, Russia, Kazakhstan, India, Indonesia, South Africa, Brazil, and Southeast Asia.

We strive to manufacture "Safe, Efficient, Energy-Saving and Environment-Friendly" boilers, provide new-type products in excellent quality, serve users sincerely to their satisfaction, and be a top supplier of boilers in China.

Declaration

Zhangjiagang Hua Dong Boiler Co.,Ltd has no subsidiaries. 

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Our products have been wildly used in power plants and large international companies overseas.