Circulating fluidized bed desulfurization tower with adjustable load and method
A technology of circulating fluidized bed and desulfurization tower, applied in chemical instruments and methods, separation methods, gas treatment, etc., can solve the problem of high energy consumption and achieve strong adaptability
Pending Publication Date: 2021-01-22
ZHEJIANG TIANDI ENVIRONMENTAL PROTECTION TECH CO LTD
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Problems solved by technology
In this mode of operation, when the load of the boiler is low, the induced draft fan is still in high-load power frequency operation, and the energy consumption is high.
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[0021] The present invention will be further described below in conjunction with the examples. The description of the following examples is provided only to aid in the understanding of the present invention. It should be pointed out that for those skilled in the art, some modifications can be made to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.
[0022] Aiming at the problem that the operation cost of the induced draft fan post bypass is relatively expensive, the present invention proposes a circulating fluidization system that can stabilize the fluidized bed in the desulfurization tower and improve the load adjustment adaptability of the desulfurization tower under the premise of canceling the induced draft fan bypass. bed flue gas desulfurization tower.
[0023] As an example, such as figure 1 and figure 2 As show...
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The invention relates to a circulating fluidized bed desulfurization tower with an adjustable load. The circulating fluidized bed desulfurization tower comprises an inlet flue, a smoke chamber, a venturi section, a fluidization desulfurization straight section and a desulfurization tower reducing section, wherein the venturi section is positioned at the lower part of the fluidization desulfurization straight section; the venturi section consists of a reducing section, a throat part and a diverging section; one end of the inlet flue is connected with an inlet of the desulfurization tower, the other end of the inlet flue is connected with an inlet of the smoke chamber, an outlet of the smoke chamber is connected with an inlet of the reducing section, and the outlet of the reducing section isconnected with the inlet of the throat part. The beneficial effects are that the circulating fluidized bed desulfurization tower with the adjustable load provided by the invention has strong adaptability to flue gas load fluctuation, and under a variable load condition, the desulfurization system can adjust the opening degree of valves on bypass branch pipes by reasonably arranging a plurality ofbypass branch pipes after an induced draft fan is canceled, and the valve is used for flexibly adjusting the flue gas flow rate of the Venturi section, so that the purpose of stabilizing a flow bed layer and a flow field in the tower is achieved, and long-term stable operation can still be achieved after a plurality of bypass branch pipes are arranged.
Description
technical field [0001] The invention belongs to the technical field of flue gas semi-dry desulfurization, and in particular relates to a load-adjustable circulating fluidized bed desulfurization tower. Background technique [0002] The continuous growth of the total industrial volume is accompanied by the spread of environmental pollution, making air pollution control a key task in my country's environmental protection industry. Sulfur oxides are one of the main pollutants emitted by the flue gas of coal-fired power generating units. Excessive emission of SO 2 Soluble in rainwater to form acid rain, which can easily lead to respiratory and eye diseases. Therefore, the control of sulfur oxide emissions has become one of the areas to comprehensively strengthen governance in the power industry. At present, flue gas desulfurization technology can be divided into wet, dry and semi-dry desulfurization according to the process conditions. Among them, semi-dry desulfurization comb...
Claims
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IPC IPC(8): B01D53/80B01D53/50
CPCB01D53/80B01D53/504B01D2258/0283
Inventor 钟雄友胡达清蒋楠葛春亮戴豪波厉雄峰
Owner ZHEJIANG TIANDI ENVIRONMENTAL PROTECTION TECH CO LTD