Smoke purifying and residual heat deep recycling integrated device

Abstract

The invention discloses a smoke purifying and residual heat deep recycling integrated device, which comprises a purification and heat exchange tower, a smoke system and a heat exchanger, wherein the inside of the purification and heat exchange tower is partitioned into a spraying chamber at the lower part and a filling chamber at the upper part by a wind cap layer; the spraying chamber comprises a spraying layer and a water pool; the water pool is connected with a water supply system, a water treatment pump, a water quality treatment system and a water circulation pump respectively; the outlet of the water circulation pump is connected with the heating hot water inlet of the heat exchanger; the outlet of the water pool is connected with the spraying layer; a smoke inlet is formed in the tower wall above the water pool; the filling chamber comprises a slurry distribution layer, a filling layer, a slurry pool and a slurry supply device; the slurry pool is connected with a slurry treatment pump, a slurry treatment system and a slurry circulation pump; the outlet of the slurry circulation pump is connected with the heating slurry inlet of the heat exchanger and the outlet of the slurry pool is connected with the slurry supply device. The smoke purifying and residual heat deep recycling integrated device is applicable to comprehensive treatment of tail smoke in gas heating, power and cooling triple combination distribution type systems, natural gas boilers, gas-steam combined circulation and fuel power stations.

Description

technical field [0001] The invention relates to a comprehensive treatment and utilization technology of flue gas, in particular to a device integrating deep recovery of waste heat of flue gas, desulfurization, denitrification and dust removal. Background technique [0002] According to statistics from the National Bureau of Statistics, my country's energy consumption structure in 2012 was 3,617.32 million tons of standard coal, of which coal accounted for 66.6%, oil accounted for 19.54%, and natural gas accounted for 5.4%. At present, the result of our country's heavy dependence on coal consumption is very serious environmental pollution and low energy utilization efficiency. Under this double pressure, the country is forced to develop clean energy. But at present, natural gas is the only clean and efficient energy source that can be safely obtained in large quantities and from a wide range of sources. The main component of natural gas is methane (CH 4 ), the current util...

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Problems solved by technology

[0006] In order to overcome the current commonly used flue gas denitration method SCR is easy to cause NH 3 To solve the problem of secondary pollution caused by escape, and to solve the problem of deep recovery of waste heat from flue gas, the present invention provides a kind of direct contact between flue gas and urea solution for heat exchange, and at the same time, the NOx and SOx in the flue gas 2 and dust removal, a device with functions of waste heat recovery and flue gas purification

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