Low grade residual heat continuous recycle system for kiln

Abstract

The invention provides a low grade residual heat continuous recycle system for a kiln, which is used for recycling low grade residual heat of the kiln. The low grade residual heat continuous recycle system comprises a heat pipe exchanger, a draught fan, a first water pump, a second water pump, a third water pump, a heat storage water tank and a drying room; the heat pipe exchanger is internally provided with a smoke section and a hot water section, wherein the kiln is communicated with the smoke section and the draught fan of the heat pipe exchanger through a smoke pipeline in sequence, the hot water section of the heat pipe exchanger, the first water pump, the heat storage water tank and the third water pump are communicated end to end through a first hot water pipeline in sequence, and the drying room, the second water pump and the upper end of the heat storage water tank are communicated end to end through a second hot water pipeline in sequence. The low grade residual heat of the kiln can be continuously stably recycled, comprehensive use efficiency is higher, problems of blockage of a water pipe and scrapping of a whole system caused by water leakage of one part of a traditional shell-and-tube heat exchanger are avoided, and safety and reliability are realized.

Description

technical field [0001] The invention relates to a waste heat recovery and utilization system, in particular to a kiln low-grade waste heat continuous recovery and utilization system. Background technique [0002] There are tens of thousands of ceramic enterprises in my country, with tens of thousands of kilns of various sizes, and the annual energy consumption is about 50 million tons of standard coal. However, my country's reserves of oil, natural gas and other resources are relatively small, which seriously restricts the rapid development of my country's economy. What's more serious is that the waste heat of many kilns is not recycled, and the exhaust gas is directly discharged into the atmosphere, which not only It causes great pollution to the environment, and causes huge waste of energy. [0003] At present, most of the kiln waste heat recovery technologies on the market use the heat of the flue gas to heat water through a traditional shell-and-tube heat exchanger. Howe...

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Problems solved by technology

[0004] Aiming at the problems existing in the above-mentioned prior art, the present invention provides a system for continuous recovery and utilization of low-grade waste heat from kilns, which can continuously and stably recycle low-grade waste heat from kilns, and has high comprehensive utilization efficiency without traditional The water pipe blockage of the shell-and-tube heat exchanger and a water leak lead to the scrapping of the whole system, which is safe and reliable

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