Waste gas processing and heat efficient recycling device

Abstract

The invention discloses a waste gas processing and heat efficient recycling device. An upper tube pass of a shell-and-tube heat exchanger is connected with a waste gas inlet pipe, a lower tube pass of the shell-and-tube heat exchanger is connected with a water tank inlet, a water tank outlet is connected with a bottom inlet of a spraying tower, a top outlet of the spraying tower is connected with a waste gas outlet pipe, the spraying tower is of a sealed structure, a padding layer is arranged in the spraying tower, a water distribution pipe and a rotary drum are arranged on the padding layer, holes are formed in the water distribution pipe, and the water distribution pipe sprays water through the holes to drive the rotary drum and the water distribution pipe to revolve. A water tank is communicated with the water distribution pipe through a water pump, a coiled pipe is arranged in the water tank, the inlet of the coiled pipe is connected with a water inlet valve, the outlet of the coiled pipe is connected with a lower shell pass of the shell-and-tube heat exchanger, and an upper shell pass of the shell-and-tube heat exchanger is connected with a water outlet valve. The waste gas processing and heat efficient recycling device is simple and reliable in structure, low in operation cost, and particularly suitable for recycling the waste heat of tail gas containing pollutants, achieves both environmentally friendly processing and energy recycling, and obtains a large amount of hot water through heat exchange, thereby being high in practicability and broad in market prospect.

Description

technical field [0001] The invention relates to a device capable of carrying out environmental protection treatment on exhaust gas and efficiently recovering the heat therein, and obtaining hot water. Background technique [0002] In our country, the heat lost by the exhaust gas of various stoves and boilers can be equivalent to the heat released by the complete combustion of tens of millions of tons of standard coal. However, the negative effects of this exhaust gas emission are not limited to energy loss. A large amount of pollutants such as soot, sulfur dioxide and nitrogen oxides are also seriously affecting the air quality. According to the analysis of relevant authoritative departments, the culprit of the haze weather is the pollutants discharged in the exhaust gas. This obviously does not meet the requirements of energy saving and emission reduction, and most of the existing exhaust gas treatment devices are limited to heat recovery or environmental protection treatm...

AI Technical Summary

Problems solved by technology

At this stage, we vigorously advocate energy saving and emission reduction, environmental protection and economy, but there are still many technical problems that have not been broken through in the environmental protection treatment of waste gas and the design and manufacture of heat recovery devices. The energy in waste gas is not only low in enthalpy, low in temperature, and gas The heat transfer coefficient is small, heat recovery is difficult, and it also contains a large amount of pollutants such as smoke, sulfur dioxide, and nitrogen oxides. It is still not satisfactory to only recover heat without environmental protection treatment.

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