CN2295185Y

CN2295185Y - Improved heat-exchanging apparatus

Info

Publication number: CN2295185Y
Application number: CN 96248149
Authority: CN
Inventors: 沈广兴; 马桂兰; 安明; 王承铭
Original assignee: 沈广兴
Priority date: 1996-10-19
Filing date: 1996-10-19
Publication date: 1998-10-21
Anticipated expiration: 2006-10-19

Abstract

The utility model relates to an improved heat exchanging apparatus, and the utility model mainly improves a heat and cold carrier device part. The part comprises a plurality of U-shaped tubes arranged orderly. The U-shaped tubes are positioned inside a casing, and the open ends of the U-shaped tubes penetrate through the wall of the casing. The U-shaped tubes are communicated orderly by connecting tube heads outside the casing, and a closed path is formed. The beginning and the end of the path are respectively an inlet and an outlet of cold or heat carriers. Because the U-shaped tubes are used, a connecting box is left out. The heat and cold carriers of the heat exchanging apparatus can not mix with materials inside the casing under the condition of having welded cracks. Thereby, the occurrence of accidents can be avoided.

Description

A kind of improved heat transmission equipment

The utility model relates to a kind of heat transmission equipment.

In phthalic anhydride, cis-anhydride production process, the steam state phthalic anhydride temperature that oxidation reaction generates reaches about 400 ℃, need reduce to about 250 ℃ through gas cooler, enters hot-melt condensation box again and is fused into liquid, to reach collection and to be convenient to the purpose of step processing down.Gas cooler mainly comprises casing, material turnover part, cold carrier device part etc., the cold carrier device partly is made up of bobbin carriage, bobbin carriage head, dividing plate etc., the company's of formation case between bobbin carriage head and bobbin carriage wall, the inner route clapboard separated into two parts has cold carrier (water) import and export respectively on the bobbin carriage head.Case, bobbin carriage all are positioned at casing.Owing to have weld seam between bobbin carriage and bobbin carriage and company's case, weld seam is ftractureed by the frequent cold and hot influence of rising of contracting easily.The water that connects in case, the bobbin carriage contacts by the material phthalic anhydride in weld crack and the casing etc., causes and catches fire, the generation massive losses.Because phthalic anhydride and by product are met behind water or the water vapour and iron generation chemical reaction, generate the extremely low ferrous salt of burning-point under higher temperature.And the crack of welding is not easy to find, so accident takes place unavoidably.

Also exist in generation as above-mentioned use defective in some use field for other heat transmission equipment as above-mentioned frame mode.

The purpose of this utility model is to overcome the deficiency that prior art exists, and a kind of improved heat transmission equipment is provided.Change the version of its cold and hot carrier arrangement part, hot and cold carrier can be leaked in the casing of heat transmission equipment, avoid the generation of accident.

The purpose of this utility model realizes in the following way:

This improved heat transmission equipment, mainly comprise casing, material turnover part, cold and hot carrier arrangement part, its technical characterstic is: cold and hot carrier arrangement partly comprises many tactic U-shaped pipes, the U-shaped pipe is positioned at casing, its openend passes box body wall, be communicated with by the tube connector order outside casing, become close access, the beginning shelves two ends of path are respectively the import and export of cold or heat carrier.

The U-shaped pipe that can comprise the many tactic connections that a group or more is above-mentioned in the heat transmission equipment.Have fin on the U-shaped pipe, to increase heat exchange area.

Below in conjunction with description of drawings:

Fig. 1 is a structural representation of the present utility model.

Among the figure: 1U shape pipe, 2 support plates, 3 connect tube head, 4, the import and export of 5 carriers, 6 fins, 7 casings, 8 material inlets, 9 material outlets.

Many U-shaped pipes that are positioned at casing are welded on the box body wall, and it passes box body wall, are communicated with by connecting tube head 3 orders, constitute close access, and the other parts of heat transmission equipment are identical with corresponding prior art.As employed gas cooler in the phthalic anhydride production process, just replaced original bobbin carriage, and removed even case with the U-shaped pipe, other constituent and using method all change.Weld seam between U-shaped pipe and box body wall also is not interposing in the carrier atmosphere, thereby mixed chance of materials such as phthalic anhydride that water just can not enter in the casing and the U-shaped pipe is outer, thereby avoids the generation of accident.

Advantage of the present utility model: adopt the U-shaped pipe, save and connect case, make in the cold and hot carrier and casing of heat transmission equipment Material can not mix because of the crack that welding is arranged chance, thereby avoid the generation of accident.

Claims

1, a kind of improved heat transmission equipment, mainly comprise casing (7), material import and export part, cold and hot carrier arrangement part, it is characterized in that cold and hot carrier arrangement partly comprises many tactic U-shaped pipes (1), the U-shaped pipe is positioned at casing (7), its openend passes box body wall, be communicated with by connecting tube head (3) order outside casing, become close access, the two ends at the whole story of path are respectively import and export (4), (5) of cold and hot carrier.

2, heat transmission equipment according to claim 1 is characterised in that U-shaped pipe (1) has fin (6).