CN207738455U - A kind of sulfuric acid conversion system preheating device - Google Patents
A kind of sulfuric acid conversion system preheating device Download PDFInfo
- Publication number
- CN207738455U CN207738455U CN201721877132.8U CN201721877132U CN207738455U CN 207738455 U CN207738455 U CN 207738455U CN 201721877132 U CN201721877132 U CN 201721877132U CN 207738455 U CN207738455 U CN 207738455U
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- CN
- China
- Prior art keywords
- face plate
- chamber
- shell
- preheating device
- sulfuric acid
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of sulfuric acid conversion system preheating devices, including shell, upper face plate, lower face plate, tube layer, the shell is separated into three parts by upper face plate and lower face plate, top is upper chamber, middle part is hypostracum, lower part is lower chamber, the upper chamber is overhauled equipped with first into hole and hot furnace gas export, the lower chamber is overhauled equipped with second into hole and hot stove gas import, upper chamber is connected to by the vertical equally distributed tube layer across upper face plate with lower face plate with lower chamber, the upper end of the hypostracum is equipped with process gas inlet, lower end is equipped with process gas outlet, the gas guide board for being internally provided with horizontal direction of the hypostracum, the top of the upper face plate is equipped with the retractable guard welded with upper face plate and shell full weld.The utility model can make the intact operation of preheating device in use, and gas leakage is avoided to cause environmental pollution.
Description
Technical field
The utility model is related to gas washing in SA production fields, and in particular to a kind of sulfuric acid conversion system preheating device.
Background technology
In sulphuric acid process, conversion section has to the feelings being catalyzed in catalyst vanadic anhydride by sulfur dioxide
Sulfur trioxide is oxidized under condition, but catalyst vanadic anhydride needs just play activity at about 400 DEG C or more, reaches and urges
The purpose of change, so, gas washing in SA production conversion system has to suck a large amount of heat to system from outside during booting
Pre-heating temperature elevation is carried out, currently used heating mode has electrothermal furnace heat temperature raising and preheating furnace two kinds of heating, wherein electric heating indirectly
Stove heat heating is used primarily in the relatively small sulfate system of scale, and the relatively large sulfate system of scale all uses substantially
The mode that preheating furnace heats up indirectly.Electric furnace heating is heated up to gas using online electric furnace, easy to control, is risen
Warm fast, pollution is small, but of high cost, and increases system resistance.Preheating furnace indirectly mainly fired using combustion furnace fuel by heating
The heat smoke generated is burnt by preheating device by process gas (mainly dry air or sulfur dioxide gas) heating, thus
Take to converter heated up, oxidation reaction, equipment operation is simple, and the thermal efficiency is high, and modulability is strong, securely and reliably.
Heating is all high using Combustion of Hot Air Furnace natural gas or diesel oil generation to conventional preheating furnace indirectly currently on the market
Process gas is heated to 500 DEG C or so after preheated device by warm flue gas (700 DEG C or so), is touched to bring heat into conversion
Catalyst layer temperature is heated to suitable temperature by matchmaker's process, but preheating device there are uneven heating it is even cause the gas leakage of shell cracking,
Situations such as tube layer is collaborated with shell, affects greatly to site environment and environmental protection of enterprise, especially in recent years as environmental protection is supervised
The constantly improve of pipe, the gas leakage of preheating furnace many places have made enterprise face huge environmental fines and be forced the risk stopped using, institute
It is poor to be evaluated during enterprise's use, it is necessary to be improved.
Utility model content
Preheating device frequent gas leakage when in order to solve the problems, such as that sulfuric acid plant uses preheating furnace indirectly heat furnace gas, this practicality are new
Type provides a kind of sulfuric acid conversion system preheating device, can make the intact operation of preheating device in use, gas leakage is avoided to make
At environmental pollution.
To achieve the above object, the technical solution of the utility model is：
A kind of sulfuric acid conversion system preheating device, including shell, upper face plate, lower face plate, tube layer, the shell is by upper face plate
Three parts are separated into lower face plate, top is upper chamber, and middle part is hypostracum, and lower part is lower chamber, and the upper chamber is equipped with
First overhauls into hole and hot furnace gas export, and the lower chamber is overhauled into hole and hot stove gas import equipped with second, is uniformly distributed vertically
The tube layer upper chamber is connected to lower chamber with lower face plate across upper face plate, the upper end of the hypostracum is equipped with process gas
Entrance, lower end are equipped with process gas outlet, the gas guide board for being internally provided with horizontal direction of the hypostracum, the upper face plate
Top be equipped with the retractable guard welded with upper face plate and shell full weld.
Further, the shell is cylinder, and arc-shaped expansion joint is additionally provided in the middle part of the shell, it is ensured that enough
The intensity for bearing top gravitational pressure, be unlikely to deform, at the same can ensure to greatest extent again shell carry out upper and lower to
Stretching, extension and the decrement expanded with heat and contract with cold when moving, compensation performance is good, and arc-shaped expansion joint weld seam is few, and deformation space is big, fits
Ying Xingqiang.
Further, the lower chamber medium position is evenly distributed with the pillar of several cast iron steel pipe manufacturings, the column upper section
Respectively one conical top of installation.
Further, the hot furnace gas export is the round venthole with protection canopy.
Further, the retractable guard is fabricated to by steel plate, is in " 7 " font, can both be ensured the entirety of preheating device
Intensity, stablizes indeformable, and the maximum tube layer of the amount of being thermally deformed inside preheating device can be detached with outer shell, make tube layer
In preheating device heat exchanging process can freely up and down, each orientation in left, right, front and rear stretch, stroke all may be used
Reliably freely to be compensated by retractable guard progress, stress deformation or damage will not be caused to other positions.
Compared with prior art, advantage is the utility model：
1. having ensured that sulfuric acid plant reliable and secure can be run using preheating device when preheating furnace indirectly heat furnace gas, will not leak
Gas pollutes environment.
2. being welded to connect using " 7 " font retractable guard between tube layer and shell, the sealing of gas both may be implemented
Transmission, does not collaborate, and tube layer can be made to carry out swing of expanding with heat and contract with cold in a larger range.
3. all heated parts are all provided with not equal expansion space according to its different heated situation, thermal stress is avoided
Destruction to preheating device links.
4. the safety and reliability of pre-heating device operation is increased substantially, the wind of environmental pollution is not only avoided
Danger, and the service life of process units is substantially increased, while also ensuring the safety of operating personnel, production equipment, it can
Substantially reduce the production run cost of enterprise.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；
The meaning of reference numeral in figure：1, lower chamber, 2, hot stove gas import, 3, lower face plate, 4, gas guide board, 5, expansion
Section, 6, process gas inlet, 7, upper face plate, 8, first overhauls into hole, and 9, hot furnace gas export, 10, upper chamber, 11, retractable guard,
12, tube layer, 13, hypostracum, 14, shell, 15, process gas outlet, 16, pillar, 17, second overhauls into hole.
Specific implementation mode
The content of the utility model is described in further details with reference to the accompanying drawings and detailed description.
Embodiment 1：
A kind of sulfuric acid conversion system preheating device, including shell 14, upper face plate 7, lower face plate 3, tube layer 12, the shell 14
Three parts are separated by upper face plate 7 and lower face plate 3, top is upper chamber 10, and middle part is hypostracum 13, and lower part is lower chamber 1,
The upper chamber 10 is overhauled equipped with first into hole 8 and hot furnace gas export 9, and the lower chamber 1 is overhauled equipped with second into hole 17 and heat
Furnace gas import 2, the vertical equally distributed tube layer 12 pass through upper face plate 7 and lower face plate 3 to connect upper chamber 10 and lower chamber 1
Logical, the upper end of the hypostracum 13 is equipped with process gas inlet 6, and lower end is equipped with process gas outlet 15, the hypostracum 13
It is internally provided with the gas guide board 4 of horizontal direction, the top of the upper face plate 7 is equipped with welds with upper face plate 7 and 14 full weld of shell
Retractable guard 11, all pads all must assure that full weld is air tight.
Wherein, the shell 14 is cylinder, is mounted in concrete foundation, the middle part of the shell 14 is additionally provided with expansion
Section 5.1 medium position of the lower chamber is evenly distributed with the pillar 16 of several cast iron steel pipe manufacturings, the respectively installation one of 16 top of the pillar
The top of a cone plays the role of disperseing stress.The hot furnace gas export 9 is the round venthole with protection canopy.Institute
It states retractable guard 11 to be fabricated to by steel plate, is in " 7 " font.
In use, hot stove gas enters lower chamber 1 by preheating device Base Heat furnace gas import 2, it is blocked at lower face plate 3
Upper chamber 10 is flowed into through 12 inside of tube layer after, completes the heat exchange to process gas, hot stove gas itself during transmission
The purpose of cooling is discharged into air finally by hot furnace gas export 9.And process gas is entered by the process gas on preheating device top
After 6 conduction of mouth enters the hypostracum 13 of preheating device, due to the presence of upper face plate 7 and retractable guard 11, process gas is without normal direction
Upper flowing is thoroughly separated with hot stove gas, but because of the presence of gas guide board 4, makes most of process gas along gas flow guiding
The direction of plate 4 is transmitted in " S " route, to carry out heat exchange to greatest extent, process gas is made to reach best preheating mesh
, finally, the process gas after preheating is delivered to sulfuric acid conversion catalyst workshop section through lower part process gas outlet 15 and carries out down
One step produces.
Above-described embodiment simply to illustrate that the utility model technical concepts and features, the purpose is to be to allow this field
Interior those of ordinary skill can understand the content of the utility model and implement according to this, can not limit the utility model with this
Protection domain.The equivalent changes or modifications that every essence according to the utility model content is made, should all cover in this reality
With in novel protection domain.
Claims (5)
1. a kind of sulfuric acid conversion system preheating device, which is characterized in that including shell (14), upper face plate (7), lower face plate (3), pipe
Layer (12), the shell (14) are separated into three parts by upper face plate (7) and lower face plate (3), and top is upper chamber (10), middle part
For hypostracum (13), lower part is lower chamber (1), and the upper chamber (10) is overhauled equipped with first into hole (8) and hot furnace gas export
(9), the lower chamber (1) is overhauled equipped with second into hole (17) and hot stove gas import (2), the vertical equally distributed tube layer
(12) upper chamber (10) is connected to lower chamber (1) with lower face plate (3) across upper face plate (7), the upper end of the hypostracum (13)
Equipped with process gas inlet (6), lower end is equipped with process gas outlet (15), and the hypostracum (13) is internally provided with horizontal direction
Gas guide board (4), the top of the upper face plate (7) is equipped with the flexible shield with upper face plate (7) and the welding of shell (14) full weld
It covers (11).
2. sulfuric acid conversion system preheating device according to claim 1, which is characterized in that the shell (14) is in cylinder
Shape is additionally provided with arc-shaped expansion joint (5) in the middle part of the shell (14).
3. sulfuric acid conversion system preheating device according to claim 1, which is characterized in that position in the lower chamber (1)
The pillar (16) of uniformly several cast iron steel pipe manufacturings is set, a conical top is respectively installed on pillar (16) top.
4. sulfuric acid conversion system preheating device according to claim 1, which is characterized in that the hot furnace gas export (9) is
Round venthole with protection canopy.
5. sulfuric acid conversion system preheating device according to claim 1, which is characterized in that the retractable guard (11) is by steel
Plate is fabricated to, and is in " 7 " font.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721877132.8U CN207738455U (en) | 2017-12-27 | 2017-12-27 | A kind of sulfuric acid conversion system preheating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721877132.8U CN207738455U (en) | 2017-12-27 | 2017-12-27 | A kind of sulfuric acid conversion system preheating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207738455U true CN207738455U (en) | 2018-08-17 |
Family
ID=63120371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721877132.8U Expired - Fee Related CN207738455U (en) | 2017-12-27 | 2017-12-27 | A kind of sulfuric acid conversion system preheating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207738455U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109704293A (en) * | 2018-12-19 | 2019-05-03 | 云浮联发化工有限公司 | A kind of roasting method relieving haperacidity fluidized bed furnace ignition method |
-
2017
- 2017-12-27 CN CN201721877132.8U patent/CN207738455U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109704293A (en) * | 2018-12-19 | 2019-05-03 | 云浮联发化工有限公司 | A kind of roasting method relieving haperacidity fluidized bed furnace ignition method |
| CN109704293B (en) * | 2018-12-19 | 2022-04-19 | 云浮联发化工有限公司 | Ignition method of fluidized bed furnace for acid preparation by roasting method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180817 Termination date: 20211227 |