A New Type of Fuel Oil and Gas Steam Boiler

Abstract

The invention provides a novel fuel oil and fuel gas steam boiler. The novel fuel oil and fuel gas steam boiler comprises an upper boiler barrel and a lower boiler barrel which are arranged in an up-down mode. Connecting pipes arranged between the upper boiler barrel and the lower boiler barrel form radiation heating surfaces and convection heating surfaces, wherein the connecting pipe on the outermost side, the connecting pipe on the innermost side and the connecting pipes at the ends of the upper boiler barrel and the lower boiler barrel are all of a membrane wall structure, and the membrane wall on the innermost side forms a boiler hearth. A combustor is arranged on one side of the connecting pipes between the upper boiler barrel and the lower boiler barrel. An air preheater is arranged on the upper boiler barrel. A chimney is arranged on the air preheater. According to the novel fuel oil and fuel gas steam boiler, the membrane wall is used as a boiler shell, so that the sealing performance of the boiler is guaranteed, the air leakage rate is lowered, and a heavy boiler wall is omitted; meanwhile, the convection heating surfaces are arranged in interlayers of the radiation heating surfaces and the boiler shell, the size of the boiler is greatly reduced, and the effects of energy conservation and environmental protection are achieved.

Description

technical field [0001] The invention belongs to the technical field of coal-fired industrial boilers, and in particular relates to a novel fuel-fired and gas-fired steam boiler. Background technique [0002] There are nearly 500,000 coal-fired industrial boilers in my country, which consume 700 million tons of coal annually, accounting for the largest amount of coal consumption in the country. Coal-fired industrial boilers have low efficiency, high levels of pollutant emissions, and low levels of automation, putting enormous pressure on the environment. With the increasing demand for energy conservation, emission reduction and smog control in the country, and the further strengthening of oil and gas energy production capacity, oil and gas boilers will gradually replace the market for small and medium coal-fired boilers in the future. [0003] In recent years, my country has made great progress in fuel oil and gas boilers, with continuous improvement of efficiency, continuou...

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Problems solved by technology

[0004] The present invention aims at the disadvantages of water pipe fuel oil and gas steam boilers in the current market, such as large furnace body, serious air leakage, and many heavy furnace walls, etc., and proposes a new type of fuel oil and gas steam boiler.

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