Annularly arranged flue gas moisture recovery experimental device

Abstract

The invention discloses an annularly arranged flue gas moisture recovery experimental device. The device comprises a first horizontal flue, a first vertical flue, a second horizontal flue, a second vertical flue, a third horizontal flue, a third vertical flue, a first heater, a circulating fan, a second heater, a third heater, a circulating fan outlet flue gas sampling and measuring port, a primary spraying device, a secondary spraying device, a water taking heat exchanger inlet sampling and measuring port, a water taking heat exchanger, a water taking heat exchanger outlet sampling and measuring port, a primary spraying device lower water collecting tank, a secondary spraying device lower water collecting tank, a water taking heat exchanger lower water collecting tank, a first water collecting tank, a first water collecting tank water outlet, a third water collecting tank water inlet, a third water collecting tank, a fourth water collecting tank, a fourth water collecting tank water outlet, a second water collecting tank, a connecting pipeline, a valve, a radiator and a flowmeter. The device has the advantages of being accurate in measurement, high in anti-interference capacity, convenient to install and operate, low in construction cost and small in maintenance amount.

Description

technical field [0001] The invention belongs to the field of thermal power generation equipment, and relates to a flue gas moisture recovery experiment device arranged in a ring. Background technique [0002] At present, coal-fired generator sets are the main force of my country's power supply, and also a key point to save energy, control coal-burning pollution, and solve environmental problems. Most of the large-scale coal power bases in my country are located in the northern arid areas with "more coal and less water". The most urgent problem is to use the flue gas moisture recovery technology of coal-fired generating units to reduce the consumption of water resources. For coal-fired generating units in arid and water-scarce areas, although water-saving technologies such as air cooling and dry slag discharge have been adopted to reduce the water consumption of coal-fired generating units, the water consumption in the power generation process is still high. [0003] Coal-fi...

AI Technical Summary

Problems solved by technology

Due to the shortage of coal sources in the current coal market, variable coal quality and large fluctuations in coal moisture have become the norm, resulting in frequent fluctuations in moisture in boiler flue gas, which has a significant impact on the water intake of the water intake test device, thereby affecting the accuracy of test measurement

[0006] (2) Affected by the load fluctuation of the unit, it has a great influence on the moisture content of the flue gas and the temperature of the flue gas, so it will also affect the measurement accuracy

With the increase of wind power, solar energy, biomass energy and other new energy power generation installed capacity, the boiler load fluctuates greatly, and the coal consumption and flue gas temperature also fluctuate accordingly, so that the flue gas temperature, flue gas moisture content, flue gas volume Irregular changes will lead to disordered changes in the boundary conditions of the flue gas water intake test device, which will affect the measurement accuracy of the test device

[0007] (3) The installation and operation of the test bench are limited

The operation of the test bench is greatly affected by the operation mode of the unit, and the experimental device will not operate normally when the unit is shut down

[0009] (4) High construction cost

[0010] In order to meet the safe and stable operation of the water recovery device and the water intake quality requirements, the water recovery experimental device is generally installed between the desulfurization tower and the chimney. When installing the water intake experimental device, the flue, furnace smoke fan, and water pipeline must be supported or fixed, and a separate house needs to be built for the placement of the experimental electronic control system and the experimental site. Therefore, the construction of the water intake experimental device High cost

[0011] (5) Large amount of maintenance

[0013] To sum up, there are problems to be solved and optimized in terms of measurement accuracy, anti-interference ability, installation and operation conditions, construction investment, and maintenance amount of the flue gas moisture recovery experimental device currently installed on the power plant boiler.

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