CN216925235U

CN216925235U - Tube still type casing pipe quenching boiler

Info

Publication number: CN216925235U
Application number: CN202220261517.6U
Authority: CN
Inventors: 刘汝刚; 吕宏霞; 崔建波
Original assignee: Doright Co ltd
Current assignee: Doright Co ltd
Priority date: 2022-02-09
Filing date: 2022-02-09
Publication date: 2022-07-08
Anticipated expiration: 2032-02-09

Abstract

The utility model discloses a shell and tube sleeve quenching boiler, comprising: protective case, lower smoke box, lower header, lower tube sheet, outer tube, inner tube, go up the tube sheet, go up the header, go up smoke box, total blow off pipe, its characterized in that: the heat exchange section consists of a plurality of groups of sleeves; the tube plate consists of a plurality of groups of hollow flat tubes; the inner pipe of the sleeve forms a pipe pass; the shell pass consists of a gap between the inner pipe and the outer pipe; the upper smoke box and the lower smoke box are lined with refractory materials, and the tube plates and welding seams between the tube plates and the inner tube are protected from high temperature; the smoke inlet of the inner pipe of the pipe pass is protected from the impact of high-temperature tail gas by a protective sleeve; each flat pipe forming the upper pipe plate and the lower pipe plate is provided with a sewage branch pipe and is directly communicated with a main sewage discharge pipe.

Description

Tube still type casing pipe quenching boiler

Technical Field

The utility model relates to a shell and tube sleeve quenching boiler for carbon black industry.

Background

With the continuous improvement of the production process of the carbon black industry, a tubular sleeve quenching boiler of high-temperature heat exchange equipment is additionally arranged on the original production line, and the high-level energy heat in the tail gas of the carbon black reaction furnace is recovered in a high-temperature steam mode, so that the purposes of energy conservation, consumption reduction and income creation are achieved, and the tubular sleeve quenching boiler is important equipment for recycling waste heat on the current carbon black production line. A shell and tube sleeve pipe quenching boiler for chemical industry is mostly fixed tube sheet formula structure to work under the high temperature operating mode, often take place the tube sheet and warp or the condition such as crackle, welding seam fracture between heat exchange tube and the tube sheet appears, for this reason, through research analysis with and to the improvement of upper and lower tube sheet and header structure, designed the shell and tube sleeve pipe quenching boiler that has unique structure.

Disclosure of Invention

The utility model relates to a shell and tube sleeve quenching boiler.A heat exchange section consists of a plurality of groups of shell and tube sleeves; the inner pipe of each group of the sleeves is a pipe pass, and high-temperature tail gas is in the pipe pass; the gap between the inner pipe and the outer pipe of the sleeve is 'one shell pass', and cold water is in the shell pass; the upper and lower tube plates are formed by assembling and welding flat tubes, and the shell pass is communicated with the upper and lower header tanks; the tail gas enters the tube pass from the upper smoke box through the lower smoke box and flows out of the upper smoke box, the water enters the shell pass through the lower header after entering each flat tube of the lower tube plate and then enters each flat tube of the upper tube plate, the steam-water mixture is changed into the upper header after the heat transfer is realized, and finally the steam-liquid separation is carried out in the steam pocket.

The technical scheme adopted by the utility model is as follows:

shell and tube double-pipe quenching boiler includes: protective case, lower smoke box, lower header, lower tube sheet, outer tube, inner tube, go up the tube sheet, go up the header, go up smoke box, total blow off pipe, its characterized in that: the heat exchange section consists of a plurality of groups of sleeves; the tube plate consists of a plurality of groups of hollow flat tubes; the inner pipe of the sleeve forms a pipe pass; the shell pass consists of a gap between the inner pipe and the outer pipe; the upper smoke box and the lower smoke box are lined with refractory materials to protect the tube plate and a welding seam with the inner tube from being influenced by high temperature; the smoke inlet of the inner pipe of the pipe pass is protected from the impact of high-temperature tail gas by a protective sleeve; each flat pipe forming the upper pipe plate and the lower pipe plate is provided with a sewage branch pipe and is directly communicated with a main sewage discharge pipe.

The design key points of the shell and tube sleeve quenching boiler of the utility model are as follows:

1. the structure is simple, and the high temperature and high pressure resistance is realized;

2. the heat transfer area can be increased or decreased according to the needs, and the application is convenient;

3. the maintenance, the pipe plugging and the pipe replacement are convenient.

Drawings

FIG. 1 is a schematic view of a shell-and-tube type casing quench boiler according to the present invention

FIG. 2 is a right side view of FIG. 1

FIG. 3 is a top view of FIG. 1

FIG. 4 is a left side view of FIG. 1

The labels in the figure are: 1-protective sleeve, 2-lower smoke box, 3-lower collection box, 4-lower tube plate, 5-outer tube, 6-inner tube, 7-upper tube plate, 8-upper collection box, 9-upper smoke box and 10-total blow-off pipe

c_1-4-a drain, m_1-2-ascending pipe, n-descending pipe

Detailed Description

Shell and tube double-pipe quenching boiler includes: the device comprises a protective sleeve 1, a lower smoke box 2, a lower header 3, a lower tube plate 4, an outer tube 5, an inner tube 6, an upper tube plate 7, an upper header 8, an upper smoke box 9 and a main sewage pipe 10. The specific implementation is as follows:

1. manufacturing flat tubes: flattening the middle part by a circular tube according to a figure to form a circular shape with two ends and a flat circular middle part, and marking and drilling according to the hole opening position and the diameter size of the inner tube 6 shown in the figure;

2. assembling and welding tube plates:

1) dividing the flat tubes into two groups, and welding each group together to form an upper tube plate 7 and a lower tube plate 4 of the heat exchange section;

2) reaming holes in the lower shell surface of the flat pipe of the upper tube plate 7 and the upper shell surface of the flat pipe of the lower tube plate 4 to reach the diameter size of the outer tube 5;

3) the inner pipe 6 and the outer pipe 5 are respectively assembled and welded with the upper pipe plate 7 and the lower pipe plate 4;

3. and (3) assembling and welding a smoke box: manufacturing an upper smoke box cylinder section, a lower smoke box cylinder section, a bottom plate and a flange according to a drawing, and assembling and welding the upper smoke box cylinder section, the lower smoke box cylinder section, the bottom plate and the flange together;

4. the bottom plates of the upper smoke box 9 and the lower smoke box 2 are respectively welded with the upper tube plate 7 and the lower tube plate 4;

5. each flat pipe blowdown branch pipe is welded with a main blowdown pipe 10, and the main blowdown pipe 10 corresponds to a blowdown port c_3-4The direction is inclined by about 1 to 1.5 degrees;

6. the upper header 8 is welded with an ascending pipe m_1-2And a sewage discharge outlet c₁A down pipe n and a sewage outlet c are welded on the connecting pipe and the lower header 3₂A sewage outlet c is welded on the connecting pipe and the main sewage pipe 10_3-4Taking over a pipe;

7. and after the inspection and the pressure test are qualified, installing the protective sleeve 1 and forging refractory materials in the upper smoke box 9 and the lower smoke box 2.

Claims

1. Shell and tube double-pipe quenching boiler includes: protective case (1), lower smoke box (2), lower header (3), lower tube sheet (4), outer tube (5), inner tube (6), go up tube sheet (7), go up header (8), go up smoke box (9), total blow off pipe (10), its characterized in that: the heat exchange section consists of a plurality of groups of sleeves; the tube plate consists of a plurality of groups of hollow flat tubes; the inner pipe (6) of the sleeve forms a pipe pass; the shell pass consists of a gap between the inner tube (6) and the outer tube (5); the upper smoke box (9) and the lower smoke box (2) are lined with refractory materials to protect the tube plate and the welding seam with the inner tube (6) from being influenced by high temperature; a flue gas inlet of an inner pipe (6) of the pipe pass is protected from the impact of high-temperature tail gas by a protective sleeve (1); each flat pipe forming the upper pipe plate (7) and the lower pipe plate (4) is provided with a sewage branch pipe and is directly communicated with a main sewage discharge pipe (10).

2. The shell and tube double pipe quench boiler of claim 1, wherein: the heat exchange section consists of a plurality of groups of sleeves, and the sleeves consist of inner pipes (6) and outer pipes (5) with two different sizes to form concentric sleeves.

3. The shell and tube double pipe quench boiler of claim 1, wherein: the tube plate consists of a plurality of groups of hollow flat tubes, and the upper tube plate (7) and the lower tube plate (4) are formed by assembling and welding round steel after being pressed into flat tubes in the middle.

4. The shell and tube double pipe quench boiler of claim 1, wherein: the casing inner tube (6) forms a tube pass, and two ends of the inner tube (6) are respectively welded on the upper tube wall of the flat tube of the upper tube plate (7) and the lower tube wall of the flat tube of the lower tube plate (4).

5. The shell and tube double pipe quench boiler of claim 1, wherein: the shell pass is composed of a gap between an inner tube (6) and an outer tube (5), the outer tube (5) is respectively welded on the lower layer tube wall of the flat tube of the upper tube plate (7) and the upper layer tube wall of the flat tube of the lower tube plate (4), and is communicated with the upper header (8) and the lower header (3) through the flat tubes of the tube plates.