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Water supply jet flow circulating device in waste-heat boiler

A technology of jet flow device and waste heat boiler, which is applied in the field of waste heat boiler, can solve the problems of short service life of heat receiving tubes, poor cooling effect and high power consumption, and achieves the effects of investment and cost reduction, service life extension and wide coverage.

Inactive Publication Date: 2005-12-07
SHOUGANG CORPORATION
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] In order to overcome the disadvantages of the natural circulation waste heat boiler in the background technology, such as low circulation flow rate, poor cooling effect, short service life of the heating pipe, and the forced circulation waste heat boiler needs to be equipped with an electric circulation pump, which consumes a lot of electric energy, the present invention provides a natural circulation and forced The water jet circulation technology with circulation advantages enables the waste heat boiler to realize the forced circulation without electric circulation pump, which not only makes the heating tube of the waste heat boiler well cooled, prolongs the service life, but also saves electric energy

Method used

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  • Water supply jet flow circulating device in waste-heat boiler
  • Water supply jet flow circulating device in waste-heat boiler
  • Water supply jet flow circulating device in waste-heat boiler

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Embodiment Construction

[0021] exist figure 1 Among them, the waste heat boiler system of this technology is composed of three parts: the first part consists of soft water inlet pipe 1, soft water tank 2, gate valve 3, feed water pump 4, check valve 5, gate valve 6, water supply pipe 7, jet device 8 and bypass valve 9 to form a water supply pipeline; the second part is composed of a steam drum 10, a steam outlet valve 11, a descending pipe 12, a heating pipe 13, and an ascending pipe 14; the third part is composed of a remote water level gauge 15, a return pipe 16, and a water level regulating valve Group 17 and bypass valve 18 form the return water pipeline. From figure 1 It can be seen that the downcomer 12 and the ascending pipe 14 of the steam drum 10 are connected with the heat receiving pipe 13 to form a U-shaped connection. Higher than H, the water surface of the steam drum 10 is ΔH from the highest point of the riser 14, which is ≈0.3m in this technical example. After the jet device 8 is co...

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Abstract

A feed water jet circulation device for exhaust-heat boiler includes water supply pipe, a drum, a jet pump, circulation pipe, reflux line, characterizing in connecting in series the jet device on the drum down-stream tube and pressurizing the circulation water with high pressure water of the feed water pump, to increase the circulation rate of the exhaust boiler by the way of backflowing extra feed water from the drum to reach the aim of increasing life time of heated pipes of the after heat boiler.

Description

Technical field [0001] The invention relates to a device for improving feedwater circulation of waste heat boilers, especially suitable for waste heat boilers requiring continuous operation. Background technique [0002] In industrial production, the process equipment that recovers waste heat and undergoes high-temperature flue gas radiation baking is vaporized and cooled, and the devices that recover steam during the vaporized cooling process are collectively referred to as waste heat boilers. With the wide application of waste heat boiler in industry, it has become an important link in the production process. At present, there are two main circulation methods for waste heat boilers: one is natural circulation, and the other is forced circulation. In our country, the natural circulation method is generally given priority at present. Its advantage is that the water circulation does not rely on external forces, and there is no electric circulation pump, which saves electric ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F22D7/04
Inventor 史文锦商红梅
Owner SHOUGANG CORPORATION
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