A high-efficiency boiler blowdown energy recovery device and method
An energy recovery device and boiler blowdown technology, which is applied to boiler cleaning devices, chemical instruments and methods, and separation methods, can solve problems such as increased equipment investment and land occupation, difficult recovery, and large instantaneous flow rate of fixed discharge, etc., to reduce maintenance The effect of heavy workload, improved operation efficiency and saving installation space
Active Publication Date: 2022-02-22
CHINA NAT OFFSHORE OIL CORP +1
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Problems solved by technology
The expansion vessel of the fixed row is open and has no steam-water separation device. Because the instantaneous flow rate of the fixed row is large, the flash steam generated is more but the time is short, and it is not easy to recover.
[0008] Based on the above reasons, two different types of fixed and continuous row expansion and container expansion are basically installed on the boiler, which will not only increase the investment and land occupation of the equipment, but also bring a lot of workload to the later equipment maintenance.
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[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0029] like figure 1 , figure 2 and image 3 As shown, a high-efficiency boiler blowdown energy recovery device includes an integrated steam blowdown expander. The integrated steam blowdown expander is connected to the boiler through regular blowdown pipes and continuous blowdown pipes, and is discharged from the steam drum of the boiler. The waste water entering the integrated steam blowdown expansion vessel is expanded to separate steam and water. The integrated steam blowdown expansion vessel includes an expansion vessel body 1, a double-ring coil cooler 2, a high-efficiency heat exchanger 3 and Annular water collection tank 4, the top side of the expander body 1 is provided with a steam outlet 5, and the bottom side is provided with a sewage outlet 6, and its inner upper and lower relative positions are respectively provided wi...
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The invention discloses a high-efficiency boiler blowdown energy recovery device and method. The device includes an integrated steam blowdown expander, and the integrated steam blowdown expander is respectively connected to the boiler through regular blowdown pipes and continuous blowdown pipes. The integrated steam sewage expansion vessel, including the expansion vessel body, double-ring coil cooler, high-efficiency heat exchanger and annular water collection tank, the top side of the expansion vessel body is provided with a steam outlet, and the bottom side is provided with a sewage outlet , the upper and lower relative positions of the interior are respectively equipped with high-efficiency heat exchangers and annular water collection tanks, and double-ring coil coolers are arranged in the annular water collection tanks. The present invention not only possesses any function of expanding the fixed and continuous rows of the existing boilers, but also can condense the fixed and continuous rows of high-temperature steam in the boiler, eliminating the energy waste and environmental pollution caused by steam discharge, and solving the problem The device occupies an area and the maintenance workload is large.
Description
technical field [0001] The invention relates to the technical field of recovery of boiler blowdown heat energy, in particular to an efficient boiler blowdown energy recovery device and method. Background technique [0002] When the steam boiler is in operation, in order to ensure that the alkalinity and dissolved solids in the boiler water meet the requirements of the boiler water quality standard, it is generally necessary to drain the surface of the drum, that is, continuously discharge the boiler water containing salt near the water surface in the steam drum. Out of the furnace, it is generally equipped with a continuous blowdown expansion vessel and a regular blowdown expansion vessel. Their function is: when the boiler blowdown water is discharged into the expansion vessel, due to the expansion of the blowdown volume, the pressure decreases, and the saturation temperature also decreases accordingly. In this way, the original pressure After reducing the pressure of the s...
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IPC IPC(8): F22B37/54F22D1/50
CPCF22B37/54F22D1/50
Inventor 李雄崔嵘熊永功劳新力张龙李卫团邓传志宁有智梁建友王涛
Owner CHINA NAT OFFSHORE OIL CORP