Engine tail gas afterheat exchange method

Abstract

The invention discloses an engine tail gas afterheat exchange method. The engine tail gas afterheat exchange method comprises a smoke inlet, a smoke chamber, a heat exchanger, a silencing chamber and a smoke discharge port connected in sequence, and further comprises an intake pipe and a fan mounted on the intake pipe; an output end of the fan enters the heat exchanger; an opening is formed in the heat exchanger; and a hot air exhaust pipe is mounted on the opening. After the heat exchange is performed for high-temperature tail gas of an engine, well drilling equipment is heated and insulated by high-temperature hot air to replace use of a boiler; and compared with a water heating mode, the engine tail gas afterheat exchange method not only can achieve a heating effect, but also can start the fan for heat exchange and air supply when needed, so that the water heating continuity is prevented, the cost is far lower than that in water heating, and the purposes of emission reduction and energy conservation are achieved.

Description

technical field [0001] The invention relates to a heat exchange device, in particular to a waste heat exchange method for engine exhaust. Background technique [0002] At present, only 40.5% of the domestic 12V190 series diesel engine works is converted into effective mechanical power, and 59.5% of the heat exchanger (3) includes end panels connected with the smoke chamber (2) and the anechoic chamber (8) respectively (9), the two end panels (9) and the side walls form a closed chamber, and a plurality of heat exchange tubes ( 10) Solve the following technical problems: 1. The flue gas recovery device cannot form resistance to the exhaust of the diesel engine. 2. The influence of carbon deposits from diesel engine exhaust on the heat conduction of the exhaust gas recovery device. 3. Selection of recycling medium. In view of the above problems, the development of this technical field is restricted. However, the drilling team uses boilers to prevent freezing and heat prese...

AI Technical Summary

Problems solved by technology

[0002] At present, only 40.5% of the domestic 12V190 series diesel engine works is converted into effective mechanical power, and 59.5% of the heat exchanger (3) includes end panels connected with the smoke chamber (2) and the anechoic chamber (8) respectively (9), the two end panels (9) and the side walls form a closed chamber, and a plurality of heat exchange tubes ( 10) Solve the following technical problems: 1. The flue gas recovery device cannot form resistance to the exhaust of diesel engines

2. The influence of carbon deposits from diesel engine exhaust on the heat conduction of the exhaust gas recovery device

In view of the above problems, the development of this technical field is restricted

However, the drilling team uses boilers to prevent freezing and heat preservation of drilling equipment in winter production. There are two main problems in this heat preservation method: 1. It consumes a lot of energy. According to statistics, a drilling team will burn about 300 tons of coal and consume about 300 tons of coal on average during the winter heating period. 2000 square meters, resulting in a large amount of energy waste and environmental pollution, high operating costs

2. Boiler water vapor is easy to freeze after condensation

At present, the large amount of heat energy in the exhaust gas of diesel engines cannot be well utilized. On the other hand, it needs to consume a large amount of coal and water resources for winter antifreeze and heat preservation of drilling rig equipment. This is a very prominent problem.

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