Integrated treatment and utilizing device for recovering and denitrating smoke waste heat and condensate water of natural gas

Abstract

The invention relates to an integrated treatment utilizing device of recovering and denitrating smoke waste heat and condensate water of natural gas. The device is characterized by comprising a direct contact type spray tower, an injection device, an ozone generator, a water quality treatment device, a circular water pump, a heat pump and a spray device. The direct contact spray tower is provided with a smoke outlet and an inlet flue, wherein the injection device is arranged in the inlet flue and is communicated with the ozone generator through an air blower; a water tank is arranged at the bottom of the direct contact type spray tower, and an overflow hole is formed in the outer wall of the water tank; a circular cooling water outlet is formed in the bottom of the water tank, the circular cooling water outlet is communicated with a heat pump cold end inlet through the circular water pump, and the circular water pump inlet is communicated with an alkali liquor tank at the same time; the heat pump cold end outlet is communicated with a spraying device which is arranged in the direct contact type spray tower. The device provided by the invention can be widely applied to comprehensive treatment of smoke of the natural gas in natural gas boiler rooms, gas-steam combined cycle thermal power plants and gas heat, electricity and cold cogeneration systems with centralized heating sources.

Description

Technical field [0001] The invention relates to a comprehensive treatment and utilization technology of flue gas, in particular to a natural gas flue gas waste heat and condensed water recovery and denitration integrated treatment and utilization device. Background technique [0002] As a green and clean energy, natural gas has been widely used in large and medium cities in my country. However, the high price of natural gas relative to coal has also led to a substantial increase in the actual cost of heating. Judging from the domestic and international energy supply situation, the price of natural gas still has a lot of room to rise, so urban heating operation costs and industry costs will become larger and larger. On the other hand, the thermal efficiency of the existing natural gas thermal equipment is already at a relatively high level. The flue gas temperature of the natural gas boiler and gas-steam combined cycle can mostly be reduced to below 100°C, and most of the sensibl...

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Problems solved by technology

But 95% of NO in flue gas x It exists in the form of NO with very low solubility, which is difficult to be absorbed by alkaline water

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