Waste heat recovery system of vacuum damping machine

Abstract

A waste heat recovery system of a vacuum damping machine comprises a condenser and a circulation water tank. A steam inlet, a condensate water outlet, a circulation water inlet and a circulation water outlet are formed in the lower portion of the condenser, the condensate water outlet and the circulation water outlet are connected with the circulation water tank through pipelines, the circulation water inlet is connected with the circulation water tank through a circulating pump, heat radiating tubes are arranged in the circulation water tank, and the condensate water outlet is connected with the heat radiating tubes through pipelines. The waste heat recovery system of the vacuum damping machine aims to reduce heat exchanger tube resistance and improve heat exchange efficiency, and meets the fact that the surplus steam of steam inject exhausting of the ejecting type vacuum damping machine has the characteristics of being instant, intermittent and mass-flow. A heat radiator is used as a condenser of the surplus steam to carry out structural design, and the waste heat recovery system of the vacuum damping machine can be used as auxiliary products for the vacuum damping machines of the mentioned type.

Description

technical field [0001] The invention relates to a vacuum dampening machine, in particular to a waste heat recovery device for the vacuum dampening machine. Background technique [0002] Jet-type vacuum dampening machine is currently widely used in the tobacco silk production line. The vacuum dampening machine is the key process equipment of the silk production line. Its function is to suck the tobacco sheets stored in the cylinder into a negative pressure of 9.80kpa (absolute pressure) Vacuum is used to complete the process of expanding and loosening laminar tobacco, removing green and miscellaneous gases, killing insects, and increasing temperature and humidity. The suction vacuum is realized by the steam ejector pump, which consumes 330 kg of steam per batch (pot), and the residual steam formed by these steams is generally introduced into the outdoor as waste steam and directly discharged to the air, which not only wastes heat energy but also harms the environment. have a...

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Problems solved by technology

The suction vacuum is realized by the steam ejector pump, which consumes 330 kg of steam per batch (pot), and the residual steam formed by these steams is generally introduced into the outdoor as waste steam and directly discharged to the air, which not only wastes heat energy but also harms the environment. have a certain impact

At present, there are generally two ways to recover heat energy from residual steam at home and abroad. One is direct absorption, and the other is heat exchange absorption. The hot water is polluted and cannot be used directly, requiring secondary heat exchange, and the heat dissipation is serious. Therefore, although it is used in cigarette factories, its promotion and application are limited; the latter is absorbed by a heat exchanger, and the recovered hot water can be directly used and recovered High efficiency, but there are special design requirements for heat exchanger tube resistance

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