CN201776145U - Anhydride forming kettle - Google Patents
Anhydride forming kettle Download PDFInfo
- Publication number
- CN201776145U CN201776145U CN2010205161562U CN201020516156U CN201776145U CN 201776145 U CN201776145 U CN 201776145U CN 2010205161562 U CN2010205161562 U CN 2010205161562U CN 201020516156 U CN201020516156 U CN 201020516156U CN 201776145 U CN201776145 U CN 201776145U
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- CN
- China
- Prior art keywords
- heating coil
- spiral heating
- coil pipe
- housing
- vertical shaft
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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 - Lifetime
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Abstract
The utility model discloses an anhydride forming kettle in the field of chemical equipment, comprising a vertical hollow shell. The top of the shell is provided with a driving mechanism which is in transmission connection with a vertical shaft extending into the shell; the periphery of the vertical shaft in the shell is provided with a spiral heating coil; a stirring piece is arranged on the vertical shaft and in a cavity surrounded by the spiral heating coil; the spiral heating coil and a bracket fixed in the shell are connected; the bracket comprises a vertical stay bar; a plurality of anchorages are arranged between the spiral heating coil and the vertical stay bar; each anchorage comprises a flat U-shaped pipe clamp sheathed out of the spiral heating coil, and the opening ends of the pipe clamps are provided with threaded sections which respectively pass through the vertical stay bar; and the end parts of the threaded sections are provided with fixed nuts. In the device, the spiral heating coil is fixed by the U-shaped pipe clamp, the contact area and mutual abrasion are small, the stability of fixation of the spiral heating coil is increased, and the device operation safety is improved and the anhydride forming kettle can be used for the manufacture industry of trimellitic anhydride.
Description
Technical field
The utility model relates to a kind of chemical industry equipment, particularly is used for the reactor of inclined to one side acid anhydride preparation in the Chemical Manufacture.
Background technology
Trimellitic anhydride (trimellitic anhydride) is called for short inclined to one side acid anhydride (TMA), chemical name 1,2, and 4-benzenetricarboxylic acid acid anhydride, molecular formula is C
9H
4O
5, molecular mass is 192.12, outward appearance is white plates solid or little yellow acicular crystals.Trimellitic anhydride is the base stock of organic synthesis chemical industry, and it makes trimellitic acid by pseudocumene earlier through oxidation, more further dehydration and making.Trimellitic anhydride is of many uses, can synthesize the fine chemical product of a lot of high added values.Be mainly used in heat-resisting plasticizer of PVC and industries such as engineering plastics, mylar and powdery paints, high-grade insulating materials and high-temperature curing agent, synthetic dyestuffs, pigment, film, stabilizing agent and surfactant at present.
The preparation flow of trimellitic anhydride following (1) oxidation: raw material pseudocumene, acetic acid and catalyst, drop into material-compound tank successively, be warming up to 80 ℃.After catalyst is molten entirely, compressed air is pressed into oxidation reactor, heat temperature raising, pressurising reaches 2.16MPa in the reactor simultaneously, waits to be warmed up to 170 ℃, and bubbling air carries out oxidation reaction.Reaction end gas enters atmosphere emptying after the water absorption tower absorbs acetic acid.Containing sour water send acetic acid to put forward dense operation.After oxidation reaction finishes, the oxidator internal pressure is reduced to 0.98MPa when following, oxidation product is put into kettle.(2) desolventizing and be dehydrated into acid anhydride: after oxidation product is put into kettle,, collect in the spirit of vinegar jar through cooling because oxidation product step-down and latent heat can make solvent steam.After solvent (acetic acid) no longer evaporates, continue to be warming up to 230-240 ℃, dewater, become acid anhydride, send the acid anhydride rectifying still then.(3) rectifying: after thick acid anhydride enters rectifying still, maintain the temperature at more than 260 ℃, and make all material pipelines all remain on 170-200 ℃ temperature and the vacuum of 1333.2Pa, carry out rectifying and become acid anhydride.
The present a kind of vertical kettle that uses, its structure mainly includes the hollow housing of vertical setting, case top is provided with driving mechanism, driving mechanism is in transmission connection with the vertical shaft that uprightly stretches in the housing, be positioned at the vertical shaft periphery in the described housing and be provided with the spiral heating coil pipe, on the vertical shaft and be positioned at the cavity that the spiral heating coil pipe surrounds and be provided with stirring parts, support fixing in described spiral heating coil pipe and the housing is connected.After material enters kettle, impel acetic acid and water to steam by the heating of spiral heating coil pipe, stirring parts stirring.Its weak point is: existing spiral heating coil pipe needs welding fixing in housing because expand with heat and contract with cold, the disturbance of fluid, its fixed position is worn easily, cause internal leakage; In addition, because the spiral heating coil pipe is welded via some unit pipes end, the easy burn into intensity in its welding position is also relatively poor, ruptures, leaks easily.
The utility model content
The utility model purpose is to provide a kind of kettle, makes its defective that can overcome prior art, makes the spiral heating coil pipe fixing reliable, uses safer.
For solving above technical problem, the kettle that the utility model provides, the hollow housing that comprises vertical setting, case top is provided with driving mechanism, driving mechanism is in transmission connection with the vertical shaft that uprightly stretches in the housing, be positioned at the vertical shaft periphery in the described housing and be provided with the spiral heating coil pipe, on the vertical shaft and be positioned at the cavity that the spiral heating coil pipe surrounds and be provided with stirring parts, described spiral heating coil pipe is connected with the interior fixing support of housing, described support comprises upright strut, be provided with some anchoring pieces between spiral heating coil pipe and the upright strut, described anchoring piece comprises the flat U-shaped pipe clamp that is nested with outside the spiral heating coil pipe, the openend both sides of pipe clamp are respectively equipped with thread segment, and thread segment passes upright strut respectively, and described thread segment end is provided with hold-down nut.
The beneficial effects of the utility model are: this device passes through fixedly spiral heating coil pipe of U-shaped pipe clamp, its way of contact is the face contact, and contact-making surface is big, can reduce the wearing and tearing to the spiral heating coil pipe, increase the fixing stability of spiral heating coil pipe simultaneously, improved the security of device operation.This device can be used in the process industry of trimellitic anhydride.
For raising adds thermal effect, the acetic acid in the material is evenly steamed, described spiral heating coil pipe is provided with two groups with one heart.The dead angle that it can reduce heating promotes into acid anhydride.
For reducing the wearing and tearing between spiral heating coil pipe and the U-shaped pipe clamp, be provided with protective casing between described spiral heating coil pipe and the U-shaped pipe clamp.Its further improvement can be fixed between described protective casing and spiral heating coil pipe in spot welding.Like this, when the spiral heating coil pipe is moving with respect to U-shaped pipe clamp generation string, only between protective casing and U-shaped pipe clamp, rub, protected the spiral heating coil pipe effectively.
As further improvement of the utility model, described spiral heating coil pipe is welded through some unit pipes, and welding point is set with reinforcing sleeve outward, and the reinforcing sleeve two ends circumferentially are welded to connect respectively and between the corresponding units pipe.But the welding point between the setting protected location pipe of reinforcing sleeve makes it be difficult for sealing-off, burn into cracking.
For guaranteeing that the spiral heating coil pipe can be fixed, the triatic stay that is provided with on described upright strut and the inner walls is fixedlyed connected.Described upright strut can be the regular hexagon setting overlooking on the direction of housing, and its structural strength is big, and is convenient for production.For further reducing cost, described upright strut and triatic stay are made and are welded to connect by channel-section steel and be one.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is that the A-A of Fig. 1 is to partial view;
Fig. 3 is upright strut and anchoring piece syndeton schematic diagram;
Fig. 4 is the vertical view of Fig. 3;
Fig. 5 is the stereogram of anchoring piece;
Fig. 6 is a unit pipes Welding Structure schematic diagram.
Wherein, 1 driving mechanism, 2 vertical shafts, 3 housings, 4 steady rests, 5 spiral heating coil pipes; 501 inner ring pipes, 502 outer race tube, 6 stirring parts, 7 upright struts, 8 triatic stays, 9 anchoring pieces; 901U shape pipe clamp, 902 thread segments, 10 protective casings, 11 hold-down nuts, 12 reinforcing sleeves.
The specific embodiment
Shown in Fig. 1-6, be a kind of kettle, it comprises the hollow housing 3 of vertical setting, housing 3 is provided with corresponding material inlet, outlet and gaseous phase outlet, housing 3 tops are provided with driving mechanism 1, driving mechanism 1 is in transmission connection with the vertical shaft 2 that uprightly stretches in the housing 3, be positioned at vertical shaft 2 peripheries in the housing 3 and be provided with spiral heating coil pipe 5, this spiral heating coil pipe 5 is provided with two groups with one heart, be respectively outer race tube 502 and inner ring pipe 501, on the vertical shaft 2 and be positioned at the cavity that inner ring pipe 501 surrounds and be provided with stirring parts 6, this stirring parts 6 is for single group or organize stirrer paddle more, spiral heating coil pipe 5 is connected with housing 3 interior fixing supports, and this support is made of welded connection by upright strut 7 and triatic stay 8, and upright strut 7 is the regular hexagon setting overlooking of housing 3 on the direction; Be provided with some anchoring pieces 9 between spiral heating coil pipe 5 and the upright strut 7, each anchoring piece 9 is formed by the flat U-shaped pipe clamp 901 and the thread segment 902 that are nested with outside spiral heating coil pipe 5, thread segment was located at the openend both sides of U-shaped pipe clamp 901 in 902 minutes, thread segment 902 passes upright strut 7 respectively, and thread segment 902 ends are provided with hold-down nut 11.Be provided with protective casing 10 between spiral heating coil pipe 5 and the U-shaped pipe clamp 901; Spot welding is fixed between protective casing 10 and the spiral heating coil pipe 5.
Above-mentioned spiral heating coil pipe 5 is welded through some unit pipes, and welding point is set with reinforcing sleeve 12 outward, and reinforcing sleeve 12 two ends circumferentially are welded to connect respectively and between the corresponding units pipe.
Stability for guaranteeing that vertical shaft rotates also is provided with steady rest 4 in the housing, steady rest 4 is radial and is welded on the inner walls, is connected rotationally between vertical shaft 2 and the steady rest 4.
The utility model is not limited to the foregoing description; as those skilled in the art; can on the basis of technique scheme, make some distortion and alternative; these distortion and alternative technical scheme also all fall in the protection domain of the present utility model, for example: increase and decrease the quantity of the quantity of upright strut, the width that changes the U-shaped pipe clamp, increase and decrease spiral heating coil pipe etc.
Claims (8)
1. kettle, the hollow housing that comprises vertical setting, case top is provided with driving mechanism, driving mechanism is in transmission connection with the vertical shaft that uprightly stretches in the housing, be positioned at the vertical shaft periphery in the described housing and be provided with the spiral heating coil pipe, on the vertical shaft and be positioned at the cavity that the spiral heating coil pipe surrounds and be provided with stirring parts, described spiral heating coil pipe is connected with the interior fixing support of housing, it is characterized in that: described support comprises upright strut, be provided with some anchoring pieces between spiral heating coil pipe and the upright strut, described anchoring piece comprises the flat U-shaped pipe clamp that is nested with outside the spiral heating coil pipe, the openend both sides of pipe clamp are respectively equipped with thread segment, thread segment passes upright strut respectively, and described thread segment end is provided with hold-down nut.
2. kettle according to claim 1 is characterized in that: described spiral heating coil pipe is provided with two groups with one heart.
3. kettle according to claim 1 and 2 is characterized in that: be provided with protective casing between described spiral heating coil pipe and the U-shaped pipe clamp.
4. kettle according to claim 3 is characterized in that: spot welding is fixed between described protective casing and the spiral heating coil pipe.
5. kettle according to claim 1 and 2 is characterized in that: described spiral heating coil pipe is welded through some unit pipes, and welding point is set with reinforcing sleeve outward, and the reinforcing sleeve two ends circumferentially are welded to connect respectively and between the corresponding units pipe.
6. kettle according to claim 1 and 2 is characterized in that: the triatic stay that is provided with on described upright strut and the inner walls is fixedlyed connected.
7. kettle according to claim 6 is characterized in that: described upright strut is the regular hexagon setting overlooking of housing on the direction.
8. kettle according to claim 6 is characterized in that: described upright strut and triatic stay are made and are welded to connect by channel-section steel and be one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205161562U CN201776145U (en) | 2010-09-03 | 2010-09-03 | Anhydride forming kettle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205161562U CN201776145U (en) | 2010-09-03 | 2010-09-03 | Anhydride forming kettle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201776145U true CN201776145U (en) | 2011-03-30 |
Family
ID=43789378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205161562U Expired - Lifetime CN201776145U (en) | 2010-09-03 | 2010-09-03 | Anhydride forming kettle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201776145U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105964201A (en) * | 2016-07-12 | 2016-09-28 | 浙江金氟隆化工装备有限公司 | Steel-liner F40 reaction kettle based on tetrafluorine rotational molding process |
| CN110237798A (en) * | 2019-07-06 | 2019-09-17 | 郑智 | A kind of coiled chemical reaction tank |
| CN110628580A (en) * | 2019-10-25 | 2019-12-31 | 湖北绿鑫生态科技有限公司 | Mounting structure of annular heating coil |
-
2010
- 2010-09-03 CN CN2010205161562U patent/CN201776145U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105964201A (en) * | 2016-07-12 | 2016-09-28 | 浙江金氟隆化工装备有限公司 | Steel-liner F40 reaction kettle based on tetrafluorine rotational molding process |
| CN105964201B (en) * | 2016-07-12 | 2018-06-29 | 浙江金氟隆化工装备有限公司 | A kind of steel lining F40 reaction kettles based on rotational moulding tetrafluoro technique |
| CN110237798A (en) * | 2019-07-06 | 2019-09-17 | 郑智 | A kind of coiled chemical reaction tank |
| CN110628580A (en) * | 2019-10-25 | 2019-12-31 | 湖北绿鑫生态科技有限公司 | Mounting structure of annular heating coil |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: JIANGSU ZHENGDAN CHEMICAL INDUSTRY CO., LTD. Free format text: FORMER NAME: ZHENJIANG ZHENGDAN CHEMICAL INDUSTRY CO., LTD. Owner name: ZHENJIANG ZHENGDAN CHEMICAL INDUSTRY CO., LTD. Free format text: FORMER NAME: ZHENJIANG ZHENGDAN CHEMICAL INDUSTRY CO., LTD. (FOREIGN SOLE OWNERSHIP) |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 212132 No. 18 pine forest road, New International Chemical Industrial Park, Zhenjiang, Jiangsu Patentee after: JIANGSU ZHENGDAN CHEMICAL INDUSTRY Co.,Ltd. Address before: 212132 No. 18 pine forest road, New International Chemical Industrial Park, Zhenjiang, Jiangsu Patentee before: ZHENJIANG ZHENGDAN CHEMICAL INDUSTRY Co.,Ltd. Address after: 212132 No. 18 pine forest road, New International Chemical Industrial Park, Zhenjiang, Jiangsu Patentee after: ZHENJIANG ZHENGDAN CHEMICAL INDUSTRY Co.,Ltd. Address before: 212132 No. 18 pine forest road, New International Chemical Industrial Park, Zhenjiang, Jiangsu Patentee before: ZHENJIANG ZHENGDAN CHEMICAL INDUSTRY Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110330 |
|
| CX01 | Expiry of patent term |