Boiler sewage waste heat recovery system

Abstract

The invention provides a boiler sewage waste heat recovery system. A boiler, a sewage storage tank, a sewage heat pump, a sewage vaporization tank, a high-pressure Roots blower, a heat exchanger and asteam separator are sequentially arranged in a high-temperature sewage and atomizing gas flow direction. The top of the vaporization tank is provided with a gas outlet, the inner upper portion of thevaporization tank is in rotational connection with a centrifugal atomizing sieve barrel in vertical arrangement, and a centrifugal turbine positioned above the centrifugal atomizing sieve barrel is fixed to the same. The vaporization tank is provided with one or more sewage ejectors on the periphery of the centrifugal atomizing sieve barrel, each sewage ejector is provided with a sewage inlet anda jet orifice, sewage pumped from the sewage heat pump flows into each sewage inlet, jetted to the centrifugal atomizing sieve barrel from each jet orifice and atomized finally, the centrifugal atomizing sieve barrel and the centrifugal turbine are pushed to rotate, and atomized gas flows from the gas outlet to the high-pressure Roots blower and the heat exchanger to heat softened water. The boiler sewage waste heat recovery system has advantages that sewage heat energy is recycled completely, and long-term operation of equipment is realized.

Description

technical field [0001] The invention belongs to the technical field of boiler sewage treatment, in particular to a waste heat recovery system for boiler sewage. Background technique [0002] Since my country's per capita exploitable energy resources are less than the world's average level, the resources are relatively tight, and coal is still the mainstay. When generating heat, coal is used in large quantities, causing serious air pollution and frequent smog, which poses serious health risks to the general public. Negative impact. On the one hand, our country spends a huge amount of foreign exchange every year to purchase a large amount of oil and natural gas energy, and on the other hand, in the process of using energy, it has not realized full gradient utilization. [0003] Since heat exchangers are placed in hot sewage, they are easily corroded and scaled, and are difficult to maintain. Therefore, many enterprises do not have recovery systems for waste heat sewage in thei...

AI Technical Summary

Problems solved by technology

[0003] Since heat exchangers are placed in hot sewage, they are easily corroded and scaled, and are difficult to maintain. Therefore, many enterprises do not have recovery systems for waste heat sewage in their boiler sewage systems, and do not utilize the heat energy of sewage, which not only causes a lot of energy waste , also pollute the environment

[0004] To sum up, a stable and efficient sewage heat energy recovery system is needed to solve the waste problem of waste water containing waste heat from existing boilers

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