CN203018051U - Large ammoniation high-pressure spherical stirring reaction kettle - Google Patents
Large ammoniation high-pressure spherical stirring reaction kettle Download PDFInfo
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- CN203018051U CN203018051U CN 201220741402 CN201220741402U CN203018051U CN 203018051 U CN203018051 U CN 203018051U CN 201220741402 CN201220741402 CN 201220741402 CN 201220741402 U CN201220741402 U CN 201220741402U CN 203018051 U CN203018051 U CN 203018051U
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- kettle
- kettle body
- shaft
- stirring
- heat
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- 238000006243 chemical reaction Methods 0.000 title abstract description 20
- 238000003756 stirring Methods 0.000 title abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 30
- 239000010935 stainless steel Substances 0.000 claims abstract description 10
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 10
- 238000007599 discharging Methods 0.000 claims abstract description 7
- 238000003466 welding Methods 0.000 claims abstract description 7
- 229910000975 Carbon steel Inorganic materials 0.000 claims abstract description 5
- 239000010962 carbon steel Substances 0.000 claims abstract description 5
- 238000004176 ammonification Methods 0.000 claims description 15
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 7
- 229910052719 titanium Inorganic materials 0.000 claims description 7
- 239000010936 titanium Substances 0.000 claims description 7
- 210000004907 gland Anatomy 0.000 claims description 6
- 239000000945 filler Substances 0.000 claims description 4
- 238000012856 packing Methods 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 3
- 238000005253 cladding Methods 0.000 claims description 2
- 238000012546 transfer Methods 0.000 abstract description 11
- 239000002131 composite material Substances 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 abstract description 2
- 239000003638 chemical reducing agent Substances 0.000 abstract 1
- 239000002360 explosive Substances 0.000 abstract 1
- 239000011257 shell material Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- VBEGHXKAFSLLGE-UHFFFAOYSA-N n-phenylnitramide Chemical compound [O-][N+](=O)NC1=CC=CC=C1 VBEGHXKAFSLLGE-UHFFFAOYSA-N 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- BFCFYVKQTRLZHA-UHFFFAOYSA-N 1-chloro-2-nitrobenzene Chemical compound [O-][N+](=O)C1=CC=CC=C1Cl BFCFYVKQTRLZHA-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 230000002421 anti-septic effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000002180 anti-stress Effects 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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Abstract
The utility model relates to a large ammoniation high-pressure spherical stirring reaction kettle. A kettle body is formed by welding two hemispherical parts; the upper part of the kettle body is provided with a feeding opening, a discharging opening, a safe relief device and an instrument control device; the lower part of the kettle body is provided with a skirt support; a stirring device is arranged at the upper end of the kettle body, and the stirring device and the kettle body are matched in a sealing manner; a motor and a speed reducer are connected with the stirring device in sequence; a stirring shaft penetrates into the kettle body; a stirrer is fixed on the stirring shaft; a discharging pipe is extended to the centre of the lower part of the kettle body along the inner wall of the kettle body; a heat exchanging device is arranged in the kettle body; the kettle body is made of an explosive two-layer composite plate material; the inner layer is made of stainless steel, and the outer layer is made of carbon steel; the stirring shaft and the stirrer in the kettle are made of stainless steel; and the heat exchanging device is made of titaniumtim. The adopted large ammoniation high-pressure spherical stirring reaction kettle disclosed by the utility model has the advantage of ensuring energy-saving and consumption-reducing properties, heat-transfer capability, homogenizing capability, anticorrosion property and product quality of the ammoniation high-pressure spherical stirring reaction kettle along the increase of the volume of the reaction kettle.
Description
Technical field
The utility model relates to a kind of chemical reaction container, particularly relates to a kind of being applicable under high temperature, condition of high voltage, has the large-scale ammonification high-pressure ball type stirred autoclave with stirring reaction of good high mass transfer, high capacity of heat transfer.
Background technology
Important organic chemical industry's intermediate to (neighbour) nitroaniline, be mainly used in the fields such as agricultural chemicals, dyestuff, auxiliary agent and photosensitive material, (neighbour) nitroaniline is adopted (neighbour) nitro chlorobenzene is added the ammonia react preparation, carrying out the nucleus equipment of aminating reaction in the method---ammonification high-pressure stirring reactor is the key equipment of producing (neighbour) nitroaniline, aminating reaction is high temperature, reaction under high pressure, the temperature in the kettle reaction is 170 ℃～210 ℃, and pressure is between 5.0～6.8MPa.
Be 3 m to (neighbour) nitro chlorobenzene ammonification autoclave volume at present
3～10m
3, adopt more whole tubular chuck be set on the external wall of vertical retort, be a chamber (or adding snakelike heat exchange tube in vertical kettle) between the outer wall of chuck and kettle, the material multiselect is with Q345R or stainless steel material.Stirring is arranged on the upper end of kettle and both are sealed and matched, shaft top is connected with motor successively with decelerator, under penetrate in kettle, be fixed with 1～3 layer of agitator on shaft, agitator type is disc type turbine stirrer or arm stirrer.The upper cover of kettle is provided with material inlet, and discharge nozzle is located at reactor low head place or penetrates in kettle through the kettle upper cover, and the lower end of described discharge nozzle extends to the low head place in kettle, and the discharge nozzle diagonal cut joint is 45 ° or 60 °.Snakelike heat exchange tube is imported and exported to take over kettle and is directly welded.According to traditional high pressure ammoniation kettle design, because aminating reaction is high temperature, reaction under high pressure, the reactor cylindrical shell wall thickness that calculates is thicker.
There is following defective in this ammonification autoclave: along with ammonification autoclave equipment enlarging, it is more that the increase of diameter causes cylindrical shell and end socket wall thickness to increase, and increased manufacturing cost and difficulty of processing, reduced heat transfer efficiency; Be only a chamber between the outer wall of chuck and kettle, during use, in whole tubular chuck, the steam flow channel area is large, and flow velocity is low, and kettle heats up, cooling is slower, and heat transfer effect is relatively poor; Heat up slow, when affecting the reactor workbench, cooling is slow, and reactor pressure is wayward, and security incident easily occurs, and simultaneously aminating reaction is had a negative impact; Inner coiled pipe goes wrong and keeps in repair inconvenience; Coiled pipe is imported and exported to take over cylindrical shell and is directly welded, and causes the weld seam of snakelike heat exchange tube and barrel soldering easily to be torn owing to expanding with heat and contract with cold; Material is comparatively serious to Q345R or stainless corrosion.
Along with to the production-scale continuous expansion of (neighbour) nitroaniline, in order to save production cost, reduce labour intensity, energy-saving and cost-reducing, adopt large capacity ammonification autoclave process units to become following development trend.Along with the increase of reactor volume, how energy-saving and cost-reducing, heat-transfer capability, homogeneous ability, antiseptic property and product quality guarantee to become problem needing to overcome.
The utility model content
The purpose of this utility model is exactly at present along with ammonification autoclave equipment enlarging, manufacturing cost raising, maintenance inconvenience have been caused, heat transfer effect is relatively poor, reduced heat transfer efficiency, reactor pressure is wayward, security incident easily occurs, to problems such as aminating reaction have a negative impact, provide a kind of large-scale ammonification high-pressure ball type stirred autoclave simultaneously.
To achieve these goals, the utility model has adopted following technical scheme:
A kind of large-scale ammonification high-pressure ball type stirred autoclave comprises kettle, and kettle top is provided with charge door, discharging opening, safety relief device and instrument control device, and the kettle bottom arranges skirt and supports whole kettle; Agitating device is located at the upper end of kettle and both are sealed and matched, and motor, reductor are connected successively with agitating device, penetrate in kettle under shaft, are fixed with 2～3 layers of agitator on shaft; Discharge nozzle extends to kettle lower central place along inner wall of kettle always; Be provided with heat-exchanger rig in kettle.
Described kettle is to be welded with two whole hemispherical heads, and the spherical kettle body bulk is 20～35m
3, nominal diameter is 3.4～4.0m.
Described heat-exchanger rig is comprised of upper and lower endless tube, middle straight comb, inlet tube and outlet, adopt flange that vertical pipe is connected with upper and lower endless tube, upper endless tube is provided with inlet tube and protrudes upward in kettle top, and lower endless tube is provided with outlet and stretches out in autoclave body bottom downwards; Inlet tube, outlet pass respectively stuffing box, and stuffing box and kettle welding with the gap of packing seal inlet tube, outlet and stuffing box, then compress filler with gland, and stuffing box is connected with bolt, nut with gland.
Described discharge nozzle is in tail end bottom perforate, and opening diameter is less than bolt, nut diameter, and the perforate total sectional area is greater than the discharge nozzle sectional area.
The agitator of installing on described shaft, its diameter of propeller blade is 0.38～0.50 with the ratio of cylinder internal diameter, the punching bolt that blade is connected with shaft adopts closely-pitched titanium bolt, and uses double nut fastening.
Described cylindrical shell material selection blast two-layer compound plate material, internal layer is selected stainless steel, and skin is selected carbon steel, inner layer material thickness 3～4mm, cladding material thickness 48～58mm; In still, shaft and agitator material are stainless steel, and the heat-exchanger rig material is the titanium material.
For can concise description for the purpose of problem, below to large-scale ammonification high-pressure ball type stirred autoclave described in the utility model all referred to as this reactor.
Adopt the advantage of this reactor to be:
1, kettle is to be welded with two hemispherical heads, and whole kettle only has a butt weld, and the welding job amount is few, and is easy to process; When medium reacts in spherical kettle, obtain field of flow more uniformly in total volume under the effect of stirring, more easily realize without dead angle and homogeneous, agitator shaft speed and shaft power can relative reduces simultaneously; Due to spherical shell in the space 360 ° of distribution of forces best, the most even, thereby making spherical kettle bear external and internal pressure can realize maximizing, improved the bearing capacity of reactor, under same material, equal pressure and temperature condition, spherical shell can approximately reduce half than the cylindrical shell wall thickness of same diameter, otherwise, under same material, equal pressure and temperature condition, spherical shell will exceed one times than the pressure that the cylindrical shell of same thickness bears, various stress distribution are more even, use safer.
In a word, with respect to various types of cylindrical vessels, spherical reactor all has unique superiority at aspects such as bearing capacity, heat and mass transport, consumptive materials (still wall thickness attenuate).
2, the inner heat-exchanger rig of reactor, building form is that inlet tube, outlet are connected with the up and down endless tube respectively, is connected with flange between up and down endless tube and vertical pipe, endless tube, vertical pipe mounting or dismounting are convenient, can pass in and out from manhole, process, installation, maintenance conveniently; The direct discharging type titanium heat exchanger tube adopts double-decker, can guarantee the demand of larger heat exchange area and don't increase the set of heat exchange tubes number, reduces the use amount of precious materials; In built-in efficient still heat exchanger tube to aminating reaction be rapidly heated, the effect of fast cooling is better, and the control of reaction rate is more easily realized, prevents the generation of security incident, improved simultaneously quality and the speed of aminating reaction; Inlet/outlet pipe substitutes directly welding with adopting the packing seal form being connected of kettle, can produce relative displacement between adapter and kettle in the difference variation process, avoided direct welding violent because of difference variation, cylindrical shell with take over swell increment different and the stress of generation and the problem of easily tearing weld seam.
3, discharge nozzle bottom opening, opening diameter are less than bolt, nut diameter, and the perforate total sectional area can prevent like this that greater than the discharge nozzle sectional area discharge nozzle from occurring along with feed liquid reduces and leaks gas, and material is beaten remaining phenomenon not to the utmost; In addition, when preventing that bolt, nut from occurring coming off because of accident, enter the entrance of pump along discharge nozzle, damage dnockout pump phenomenon.
4,2～3 layers of agitator are installed on shaft, agitator type is disc type turbine stirrer or arm stirrer, diameter of propeller blade is 0.38～0.50 with the ratio of cylinder internal diameter, the punching bolt that blade is connected with shaft adopts closely-pitched titanium bolt, good self-locking action is arranged, and use double nut fastening.
5, kettle adopts blast double layer composite board spherical structure, and the internal layer of composite plate is stainless steel, and skin is carbon steel material, and shaft and agitator are stainless steel, and in still, the heat exchanger tube material is the titanium material, and better corrosion resistance and anti-stress corrosion cracking ability are arranged.Like this, withstand voltage, the decay resistance of ball still improve greatly, can work well under elevated pressures, compare with traditional reactor, total volume is increased, and greatly improves output and the efficient of separate unit ammonification high-pressure stirring reactor, guarantee simultaneously product quality, prevent the generation of security incident.
In sum, adopt the structure of this reactor, realized the increase along with the reactor volume, energy-saving and cost-reducing, heat-transfer capability, homogeneous ability, antiseptic property and product quality all can be guaranteed.Be applicable under high temperature, condition of high voltage, as a kind of large-scale ammonification high-pressure ball type stirred autoclave with stirring reaction with good high mass transfer, high capacity of heat transfer.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is heat-exchanger rig structural representation of the present utility model;
The top view of Fig. 3 Fig. 2 (omitting angle bar and import and export pipe);
Fig. 4 is vertical pipe structural representation in Fig. 2;
Fig. 5 is the left view of Fig. 4;
Fig. 6 is heat-exchanger rig import and export pipe of the present utility model and kettle connecting portion schematic diagram;
Fig. 7 is discharge nozzle schematic diagram of the present utility model;
Fig. 8 is that the A of Fig. 7 is to view.
The specific embodiment
By reference to the accompanying drawings the utility model is described in further detail below by specific embodiment:
Referring to Fig. 1, this high-pressure ball type stirred autoclave is comprised of kettle 5, skirt 6, agitating device 3, heat-exchanger rig and discharge nozzle 7.
As shown in Figure 1, kettle 5 is welded for the two halves dome head, and the centre only has a butt weld, and the top of kettle 5 is provided with dog-house (not shown dog-house in accompanying drawing), discharging mouth of pipe 7a and manhole 4, kettle 5 bottoms skirt 6 supports.
Agitating device 3 is arranged on the upper end of kettle 5 and both are sealed and matched, and agitating device 3 upper ends are connected with motor 1 successively with decelerator 2, the shaft of agitating device 3 penetrates for 8 times in kettle 5; Three layers of agitator (being respectively 9,10,11) are set on shaft 8, and agitator can be hinge paddle type stirrer or disc type turbine stirrer.
As shown in Figure 1, discharge nozzle 7 stretches out through kettle 5 top discharging mouth of pipe 7a, and the interior discharge nozzle 7 of kettle 5 is snakelike and extends downward downside place in kettle 5 along kettle 5 inner chambers; Have several apertures as Fig. 7, discharge nozzle shown in Figure 8 bottom, the perforate total sectional area is greater than the discharge nozzle sectional area, and opening diameter is less than bolt, nut diameter, to prevent entering discharge nozzle after bolt, nut from coming off.
As shown in Figure 2 and Figure 3, heat-exchanger rig in kettle is comprised of steam inlet pipe 12, upper endless tube 13, lower endless tube 16, vertical pipe 15 and outlet 17, inlet tube 12 protrudes upward in kettle 5 tops, inlet tube 12 is connected logical downwards with upper endless tube 13, upper endless tube 13 connects array vertical pipe 15 downwards, vertical pipe 15 bottoms connect lower endless tubes 16, and lower endless tube 16 stretches out in kettle 5 bottoms to having outlet 17; Be connected with flange 18 between half endless tube of upper and lower endless tube;
As Fig. 4, shown in Figure 5, every group of vertical pipe 15 is comprised of two row straight tubes 24 and 25, and the quantity of every row can be determined according to heat exchange area and people's hole size, straight tube 24(25) be connected with bobbin carriage 23 respectively, then be connected with upper endless tube 13, lower endless tube 16 respectively with flange 18;
As shown in Figure 1 and Figure 2, upper and lower endless tube and vertical pipe 15 are fixed in kettle 5 inboards with angle steel 14 respectively, can be from manhole 4 turnover when upper endless tube 13, lower endless tube 16 and vertical pipe 15 dismounting;
As shown in Figure 6, heat-exchanger rig inlet tube 12, outlet 17 adopt the packing seal form with being connected of kettle 5, stuffing box 19 and kettle 5 welding, with the gap of filler 20 sealing adapters with stuffing box 19, compress filler 20 with gland 21 again, stuffing box 19 is connected with gland 21 use bolt and nut groups 22.
Kettle 5 adopts the two-layer compound plate structure, and the internal layer of composite plate is that stainless steel (as 316L), skin are carbon steel material (as Q345R), and shaft 8 and agitator 9,10,11 are the 316L material, and the heat-exchanger rig material is TA2.
Above-described is only a kind of embodiment of the present utility model.Should be pointed out that for the person of ordinary skill of the art, under the prerequisite that does not break away from the utility model principle, can also make apparent some conversion or substitute and remodeling, these also should be considered as belonging to protection domain of the present utility model.
Claims (2)
1. one kind large-scale ammonification high-pressure ball type stirred autoclave, comprise kettle, and kettle top is provided with charge door, discharging opening, safety relief device and instrument control device, and the kettle bottom arranges skirt and supports whole kettle; Agitating device is located at the upper end of kettle and both are sealed and matched, and motor, reductor are connected successively with agitating device, penetrate in kettle under shaft, are fixed with 2～3 layers of agitator on shaft; Discharge nozzle extends to kettle lower central place along inner wall of kettle always; Be provided with heat-exchanger rig in kettle; It is characterized in that:
Described kettle is to be welded with two whole hemispherical heads, and the spherical kettle body bulk is 20～35m
3, nominal diameter is 3.4～4.0m;
Described heat-exchanger rig is comprised of upper and lower endless tube, middle straight comb, inlet tube and outlet, adopt flange that vertical pipe is connected with upper and lower endless tube, upper endless tube is provided with inlet tube and protrudes upward in kettle top, and lower endless tube is provided with outlet and stretches out in autoclave body bottom downwards; Inlet tube, outlet pass respectively stuffing box and extend out to the kettle outside, and stuffing box and kettle welding with the gap of packing seal inlet tube, outlet and stuffing box, then compress filler with gland, and stuffing box is connected with bolt, nut with gland;
Described discharge nozzle is in tail end bottom perforate, and opening diameter is less than bolt, nut diameter, and the perforate total sectional area is greater than the discharge nozzle sectional area;
The agitator of installing on described shaft, its diameter of propeller blade is 0.38～0.50 with the ratio of cylinder internal diameter, the punching bolt that blade is connected with shaft adopts closely-pitched titanium bolt, and uses double nut fastening.
2. large-scale ammonification high-pressure ball type stirred autoclave according to claim 1, it is characterized in that: described body material is selected blast two-layer compound plate material, and internal layer is selected stainless steel, and skin is selected carbon steel, inner layer material thickness 3～4mm, cladding material thickness 48～58mm; In still, shaft and agitator material are stainless steel, and the heat-exchanger rig material is the titanium material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220741402 CN203018051U (en) | 2012-12-30 | 2012-12-30 | Large ammoniation high-pressure spherical stirring reaction kettle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220741402 CN203018051U (en) | 2012-12-30 | 2012-12-30 | Large ammoniation high-pressure spherical stirring reaction kettle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203018051U true CN203018051U (en) | 2013-06-26 |
Family
ID=48642069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220741402 Withdrawn - After Issue CN203018051U (en) | 2012-12-30 | 2012-12-30 | Large ammoniation high-pressure spherical stirring reaction kettle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203018051U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102989372A (en) * | 2012-12-30 | 2013-03-27 | 安徽八一化工股份有限公司 | Large ammonification high pressure spherical stirring reaction kettle |
| CN110975786A (en) * | 2019-12-05 | 2020-04-10 | 深圳市同德新材料科技有限公司 | Electromagnetic heating reaction kettle |
-
2012
- 2012-12-30 CN CN 201220741402 patent/CN203018051U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102989372A (en) * | 2012-12-30 | 2013-03-27 | 安徽八一化工股份有限公司 | Large ammonification high pressure spherical stirring reaction kettle |
| CN102989372B (en) * | 2012-12-30 | 2015-02-04 | 安徽八一化工股份有限公司 | Large ammonification high pressure spherical stirring reaction kettle |
| CN110975786A (en) * | 2019-12-05 | 2020-04-10 | 深圳市同德新材料科技有限公司 | Electromagnetic heating reaction kettle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130626 Effective date of abandoning: 20150204 |
|
| RGAV | Abandon patent right to avoid regrant |