Steam boiler combusting low-heat value fuel gas
A technology of steam boiler and fuel gas, which is applied in steam boiler, steam generation, lighting and heating equipment, etc., can solve the problem that low calorific value fuel gas cannot be used as the main gas source, etc., to ensure normal combustion, increase coil clearance, The effect of good heat transfer
Inactive Publication Date: 2013-03-27
CHANGZHOU OLYMSPAN THERMAL ENERGY EQUIP
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Problems solved by technology
[0003] The technical problem to be solved by the present invention is: in order to solve the technical problem that low-calorific-value fuel gas cannot be used as the main gas source in the prior art, a steam boiler for burning low-calorific-value fuel gas is provided.
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[0010] The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.
[0011] refer to figure 1 , the present invention includes a furnace body 1 and a furnace 2 arranged in the furnace body 1. A heat transfer oil heating coil assembly 3 is arranged in the furnace body 2. The heat transfer oil heating coil assembly 3 consists of a plurality of heat transfer oil heating coils 31 from the inside to the outside. The upper side of the furnace body 1 has a flue gas outlet, the top of the furnace body 1 is provided with a burner 4, the burner 4 has a flue gas inlet, and the lower part of the burner 4 is connected to the furnace 2, and each adjacent circle conducts heat The distance between the oil heating coils 31 is 1 / 4 of the pipe d...
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The invention relates to a steam boiler combusting low-heat value fuel gas. The steam boiler comprises a boiler body and a hearth arranged in the boiler body, wherein a heat conduction oil heating coil assembly is arranged in the hearth and is formed by coiling heat conduction oil heating coils from the inner circle to the outer circle, a smoke outlet is formed in the side surface of the upper part of the boiler body, a combustor is arranged at the top of the furnace body, a smoke inlet is formed in the combustor, the lower part of the combustor is communicated into the hearth, and the spacing between two adjacent circles of the heat conduction oil heating coils is 1 / 4-1 / 3 of the diameter of the heat conduction oil heating coils. According to the steam boiler, aiming at the low-heat value fuel gas, the combustor with a heat accumulation structure and modes such as three-stage ignition are adopted to ensure that inlet fuel gas is normally combusted under a certain fluctuation condition; in addition, a gap between the inner circle of the coils and the outer circle of the coils is increased, the problem that a large quantity of smoke is generated during the combustion of the low-heat value fuel gas is solved, and normal combustion and good heat transfer effect are ensured.
Description
technical field [0001] The invention relates to the technical field of steam boilers, in particular to a steam boiler burning low calorific value fuel gas. Background technique [0002] Under the general trend of energy saving and emission reduction, there are many non-standard gas sources in China. The calorific value of conventional natural gas and liquefied petroleum gas is 8000-10000 kcal / cubic. Some gas sources with low calorific value include coke oven gas, dry gas and blast furnace gas. Etc. The calorific value varies from high to low. The calorific value of some blast furnace gas is only one-tenth of that of ordinary natural gas, which is about 800-1000 kcal / cubic, and some non-standard gases are corrosive and contain sulfur dioxide and hydrogen sulfide. and other corrosive ingredients. Low calorific value gas has unfavorable factors such as large intake volume, thick intake valve group, unstable fuel intake, unstable intake pressure, and corrosion. Fuel gas with lo...
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Inventor 高屾
Owner CHANGZHOU OLYMSPAN THERMAL ENERGY EQUIP