High-temperature vertical waste heat boiler with coil pipes

A technology for waste heat boilers and coils, which is applied to steam boilers, heat exchange equipment, heat exchanger shells, etc., which can solve problems such as difficulty in adapting to larger scale requirements and poor cooling effects, and achieve uniform cooling effects and protect metal Materials, easy-to-implement effects

Active Publication Date: 2014-06-11
SHANGHAI INT ENG CONSULTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One of the technical problems to be solved by the present invention is to provide a high-temperature vertical coil waste heat boiler for the problem that the water circulation cooling structure in the existing waste heat boiler is difficult to adapt to the larger requirements and the cooling effect is not good.

Method used

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  • High-temperature vertical waste heat boiler with coil pipes
  • High-temperature vertical waste heat boiler with coil pipes
  • High-temperature vertical waste heat boiler with coil pipes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] see figure 2 , a high-temperature vertical coil waste heat boiler shown in the figure includes a pot shell part, a pipe box part, a water circulation cooling structure part and a coil part arranged in the heat exchange chamber of the pot shell part.

[0046] The pot shell part includes a pot shell, which is welded by two sections of cylinder body 110, 120 and upper head 130. The upper ends are connected by flanges 140, 150 and fasteners. A steam outlet 160 is welded on the upper head 130 , and a steam-water separation element 170 is installed in the upper head 130 at the inlet end of the steam outlet 160 . A steam-water separation space 180 is provided on the upper part of the whole barrel; steam generated in the steam-water separation space 180 is exported through the steam-water separation element 170 and the steam outlet 160 . The cylinder body of this embodiment is composed of two sections of cylinder body 110, 120, which can facilitate the inspection and mainten...

Embodiment 2

[0061] The structure of the high-temperature vertical coil waste heat boiler of this embodiment is basically the same as that of the high-temperature vertical coil waste heat boiler of Embodiment 1, the difference is that the coil assembly 440 is slightly different in its coiling mode, see Figure 6 and Figure 7 , the coiled tube assembly 440 in this embodiment includes twelve coiled tubes, and the twelve coiled tubes are divided into six groups of coiled tube bundles 440a, 440b, 440c, 440d, 440e, 440f, and each group of coiled tube bundles is composed of two coiled tubes. Coiled. The six groups are installed around the center pipe 430 in a uniform manner in the circumferential direction.

Embodiment 3

[0063] The difference between the high-temperature vertical coil waste heat boiler in this embodiment and the high-temperature vertical coil waste heat boiler in Example 1 is that the water circulation cooling structure is different, see Figure 7 , its water circulation cooling structure includes a thick tube plate 310 , a flexible tube plate 330 , several drain pipes 340 and a cover 380 . The thick tube plate 310 and the cover body 390 are in contact with the boiler water and mainly play a pressure bearing role.

[0064]The bottom end of the cylinder 120 is welded with a lower head 190, the thick tube plate 310 is welded on the bottom of the cylinder 120, the cover 390 is welded on the surface 311 of the thick tube plate 310 adjacent to the side of the pot shell, the inner surface of the cover 390 The space bounded by the surface 311 of the thick tube plate 310 adjacent to the side of the pot shell constitutes a circulating water distribution chamber 350 . A number of coile...

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Abstract

The invention discloses a high-temperature vertical waste heat boiler with coil pipes. The high-temperature vertical waste heat boiler comprises a shell, a channel, a water circulating cooling structure and the coil pipes, wherein the coil pipes are arranged in a heat exchange chamber of the shell; a circulating water distributing chamber is arranged in the water circulating cooling structure; after entering the circulating water distributing chamber, cooling water is pressed in a cooling cavity between a flexible pipe plate and a thick pipe plate through annular gaps between outer pipe walls of process gas inlet ends of the coil pipes and walls of coil pipe penetrating holes, and is pressed in the shell by a water drainage pipe after the cooling water and the process gas inlet ends of the coil pipes exchange heat. The coil pipes are cooled uniformly, cooling of the coil pipes is not limited by the quantity of the coil pipes, cooling water sources and passages of heat exchange pipes are independent, uniform and one-to-one, if a pipe is added, another annular gap is formed, and accordingly the high-temperature vertical waste heat boiler in the cooling scheme can be provided with multiple pipes and can be large-sized.

Description

technical field [0001] The invention relates to the technical field of waste heat boilers, in particular to a high-temperature vertical coil waste heat boiler suitable for heat recovery of high-temperature syngas / reformed gas and by-product medium / high pressure saturated steam. The temperature of the process gas treated by the high-temperature vertical coil waste heat boiler can be as high as 1500°C and the pressure can be as high as 80bar. Background technique [0002] In the chemical industry, various high-temperature reformed gases contain a large amount of CO, CO2, H2, and may contain H 2 S, coal ash and other impurities, the waste heat boiler in this kind of process needs to consider various problems such as corrosion, erosion and scaling of the medium. Since the temperature of the gas after the reaction can be as high as 1500°C, the most demanding part of the design of the waste heat boiler is the process gas inlet part. Such a high temperature requires a special desi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F22B1/18F22B31/08
CPCF28F9/0229
Inventor 刘磊张西原金力强张仲敏
Owner SHANGHAI INT ENG CONSULTING
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