Scale-free direct-current gas boiler for heat pipe heat setting pool provided with double coils and furnace flue

Abstract

The invention relates to a scale-free direct-current gas boiler for a heat pipe heat setting pool provided with double coils and a furnace flue, in particular to a hot water, steam and hot carrier gas boiler capable of realizing steam or thermal output. The gas boiler is provided with a heat transfer, multiphase-flow and heat setting heat pipe heat exchange box furnace system provided with double coil heat exchange walls, a direct current indirect heat exchanger boiler and a direct heat forced circulation boiler, and has a plurality of combination systems which combine a combination of a double-coil boiler, a heat pipe heat exchange box and a backheating, overflowing and settling pond with a combination of a single-coil boiler, a heat pipe heat exchange box and a backheating overflowing and settling pond and have working principle characteristics of heat transfer, multiphase-flow circulation and heat exchange of smoke, direct water, indirect water, steam, spraying and heat setting, the characteristics of the double coil or single coil coiled flue provided with double coils and double boilers are formed. Through the boiler, energy can be saved by 30% as the total of the annual average fractional energy saving efficiency and the latent heat setting and recycling efficiency of the smoke.

Description

technical field [0001] The invention relates to a technology of a non-scaling direct-flow gas-fired boiler with a double-set coil chamber flue heat pipe heat-condensing tank pool, especially equipped with a double-set coil heat exchange wall, an indirect heat direct current heat exchange pot, and a direct heat forced circulation pot. Furnace smoke alley system with direct current boiler system combined with thermal convection heat pipe heat exchange box forms a double set of coil coils with two to several layers, and the layers form the flue of the pyrotechnic return, so that the heat is first absorbed by the independent circulating water in the outer casing to heat up. The temperature is synchronously transmitted to the other inner tube pump and feed water pump in the inner casing to pump the direct current (circulation) water, and the water is output as the working medium (water or water, steam, oil, etc. at the same time) by the interthermal direct current heat exchange syst...

AI Technical Summary

Problems solved by technology

[0002] At present, the known gas-fired boilers are all designed with the traditional technology of fouling and coking of the working fluid. Even if the water source is softened and the annual descaling (or continuous oil filtration and decoking in the high-pressure pump cycle) is treated, it is impossible to avoid scaling and coking. (Take scaling as an example: we have dissected and observed many discarded tea stoves and bath boilers. "The average thickness of the fire tube and furnace heat exchange wall is 50mm, and there are even a lot of fire tubes and fire tubes. The water sides between the water sides are full of scale'" - it should be reminded that "for every 1mm increase in the thickness of precipitated scale, the actual heat transfer calculation of the furnace metal wall thickness "calculation parameter" must be increased accordingly" +50mm'"), will seriously affect the heat transfer of the boiler and greatly reduce the service life and safety. Its annual average operating thermal efficiency and test efficiency are about 20% lower

In addition, there are about 2.1 to 2.2 kilograms of latent heat steam in the combustion products of every kilogram of natural gas burned, and the latent heat loss is close to 14% of the total calorific value of the natural gas burned. All the technologies for recovering this part of waste heat in the world are nothing more than "Reverse Carnot cycle" condensation technology, if the energy efficiency ratio of this technology is 2.6:1, the waste heat recovered per kilowatt-hour electric power is only about 2500 kcal. However, the power generation efficiency of thermal power plants is 38~ 51% calculates that every 1kwh of secondary energy is generated, but it consumes 2000-2600 kcal of primary energy, and it takes a lot of time to get the primary energy equivalent to 0-26% of the power consumption on the boiler. Saving energy... making it impossible for global natural gas energy equipment to make further energy saving efforts, resulting in serious losses in the sense of energy saving

Images