CN105642219A - Blast-resistant reaction tower - Google Patents
Blast-resistant reaction tower Download PDFInfo
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- CN105642219A CN105642219A CN201511000699.2A CN201511000699A CN105642219A CN 105642219 A CN105642219 A CN 105642219A CN 201511000699 A CN201511000699 A CN 201511000699A CN 105642219 A CN105642219 A CN 105642219A
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- gas port
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/26—Nozzle-type reactors, i.e. the distribution of the initial reactants within the reactor is effected by their introduction or injection through nozzles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0006—Controlling or regulating processes
- B01J19/002—Avoiding undesirable reactions or side-effects, e.g. avoiding explosions, or improving the yield by suppressing side-reactions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
- B01J19/0066—Stirrers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00162—Controlling or regulating processes controlling the pressure
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- Chemical & Material Sciences (AREA)
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- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention relates to a blast-resistant reaction tower. A stirring device and a steam introduction mechanism are integrated to one body, a high temperature steam circulation channel is formed on the rotating shaft and the blades of the stirring device, high temperature steam is ejected from gas jet nozzles on the blades, and the blades and the gas jet nozzles are respectively positioned in the body of the tower, so the steam is dispersed, and liquefaction of the steam in the tower body is promoted, thereby heat carried by the steam is fully released into the tower body, the liquefied steam forms soft water used as a high-molecular polymer production raw material; and the blades and the gas jet nozzles can rotate with the rotating shaft, so the steam uniformly reaches all positions in the tower body, and the stirring effect of the high temperature steam on the high-molecular polymer raw material in the tower body is improved, thereby the reaction of a high-molecular polymer is full and uniform, the content of unreacted polymerization monomers is low, and the molecular weight of the high-molecular polymer is uniform.
Description
Technical field
The present invention relates to the reaction tower of a kind of blast protection, belong to technical field of chemical.
Background technology
Macromolecular polymerization reaction joins in reaction vessel by each reactant feed, makes reaction monomers occur polymerization to form high molecular polymer by control reaction conditions. In order to enable reaction evenly carry out, it is necessary to the reactant in reaction vessel is stirred. At present, reactant is stirred by the churned mechanically mode of normal employing.
Chinese patent literature CN202778444U discloses the reaction vessel of a kind of steam heated and stirred, comprises tower body, is inserted into the pipeline of tower body inside, and described pipeline has steam-in. When specifically using, it is inner that high pressure steam enters into tower body by pipeline and the steam-in that is arranged on pipeline, with the liquid form mixt stirred in tower body. But, owing to high pressure steam is directly led to into tower body inner by pipeline, thus the vapour stream of big stock is easily formed, and big stock vapour stream easily flocks together in liquid form mixt and forms big bubble, big bubble once be formed and will float and overflow from the liquid level of liquid form mixt, thus causes the mixing effect to reactant undesirable in liquid form mixt. In addition, the bubble formed due to vapour stream is excessive, and the heat energy of steam has little time fully to exchange with liquid form mixt, steam cannot liquefy formation soft water completely, thus the quantity of steam in tower body can increase into the increase of time along with leading to, and can cause pressure increase in tower body, makes tower body have the danger of blast; And in order to keep the stable of pressure in tower body, prevent pressure excessive, and just the steam in tower body must be discharged, exhaust vapour will reduce the utilization ratio of steam, wastes the heat energy in steam and steam.
Summary of the invention
Therefore, technical problem to be solved by this invention is the problem that reaction vessel mixing effect is poor, steam utilization is low of prior art, thus provides the reaction tower that a kind of mixing effect is good, steam utilization is high.
For solving the problems of the technologies described above, the present invention provides the reaction tower of a kind of blast protection, comprises,
Tower body, for cylinder has accommodation space;
Whipping appts, comprises the rotating shaft can rotated under power set drives vertically being arranged on described tower body central position, and along some blades that the axially spaced-apart of the vertical direction of described rotating shaft is arranged in described rotating shaft;
Described rotary shaft hollow forms air flue, described blade form along the axial arranged main passage of described blade, and form the wing passage of certain angle setting with described main passage, described main passage is connected with described air flue, and extending to form main jet gas port toward the axial direction due of described blade, the radial direction of described wing passage and described main channel connection and past described blade extends to form side spray gas port;
The width of described air flue: the width of described main passage: the width of described wing passage=: 2-3:1:0.5-0.8; Vertical gap between described main jet gas port and the inwall of tower body is 80-100mm, and the distance of the described blade in the vertical direction of adjacent two is 400-600mm;
One end of described air flue is connected with steam steam line, so that extraneous steam enters described air flue, sprays in described tower body finally by described main jet gas port and described side spray gas port;
Arranging some pressure release valves on the sidewall of described reaction tower, described pressure release valve, by return line and accumulator unit, arranges the 2nd check valve on the communication path of accumulator unit and described return line, and described 2nd check valve can only be opened to described accumulator unit.
The angle formed between described main passage and horizontal plane is 3-4 ��, and described main passage is horizontal-extending, and described wing passage is inclined on the sidewall of described main passage, and the angle that the axis of described wing passage and the axis of described main passage are formed is 8-15 ��.
The diameter of described main jet gas port is 20-40mm, and the diameter of described side spray gas port is 10-20mm.
The diameter of described main passage becomes big from one end of main jet gas port gradually towards the one end being connected with described air flue, and the diameter of one end that described main passage is connected with described air flue is 1.30-1.40 times of described main jet gas port diameter.
Distance along adjacent two the described blade in the vertical directions of described rotating shaft vertical axis is 400-600mm, the described main jet gas port being positioned on the described blade of lower in two adjacent described blades and the diameter of described side spray gas port be the described main jet gas port being positioned on the described blade of eminence and described side spray gas port diameter 1.1-1.2 doubly.
Shape near the blade bottom described tower body is arch, has the vertical spout parallel with described shaft axis; The diameter of described vertical spout is 50-80mm.
At same height location place, described rotating shaft connecting two the described blades in left and right, the described wing passage on blade described in side tilts to extend downwards, and the described wing passage on blade described in another side is inclined upwardly extension.
The other end of described air flue is provided with pressure limiting valve.
The technique scheme of the present invention has the following advantages compared to existing technology:
(1) reaction tower with pneumatic whipping appts of the present invention, whipping appts and steam are led to into synthesis of mechanism integral, the rotating shaft and blade of whipping appts form high-temperature steam circulation passage, high-temperature steam sprays from the tuyere blade, owing to multiple blade and multiple tuyere are all positioned at tower body inside, the effect of dispersion steam can be played on the one hand, promote that steam is at tower body fluid, make steam with heat be fully discharged in tower body, the soft water as high molecular polymer raw materials for production is defined after steam liquefied, blade and tuyere also can follow axis of rotation on the other hand, make each position that steam more evenly arrives in tower body, improve high-temperature steam to the mixing effect of still body inner macromolecule polymer raw material, make the reaction of high molecular polymer more abundant, evenly, unreacted polymerization single polymerization monomer content is low, and the molecular weight of high molecular polymer is comparatively even, and, the width of described air flue: the width of described main passage: the width of described wing passage=: 2-3:1:0.5-0.8, vertical gap between described main jet gas port and the inwall of tower body is 80-100mm, the distance of described blade 22 in the vertical direction of adjacent two is 400-600mm, now, steam utilization is up to the highest, and ensures that air pressure inside can not be too high and cause danger,By arranging side spray gas port and main jet gas port, high-temperature steam is made to have multiple jet direction, further increase the mixing effect of high-temperature steam, and enable high-temperature steam be more prone to liquefaction in high molecular polymerization raw material and form soft water, prevent pressure mistake in still body; Automatically open during the hypertonia of pressure release valve in reaction tower, release portion gas, hypertonia in reaction tower can be prevented and cause explosion hazard, and, the sidewall of described reaction tower arranges some pressure release valves, in reaction tower during hypertonia, can carrying out pressure release by pressure release valve, in pressure leak process, portion gas enters the return line being positioned at reaction tower outside, when in return line, gaseous tension is bigger, 2nd one-way valve opens, so that the gas in return line enters in accumulator unit, and collects, can utilizing further, energy-saving effect is better.
(2) reaction tower with pneumatic whipping appts of the present invention, by arranging side spray gas port and main jet gas port, high-temperature steam is made to have multiple jet direction, further increase the mixing effect of high-temperature steam, and enable high-temperature steam be more prone to liquefaction in high molecular polymerization raw material and form soft water, prevent hypertonia in still body.
(3) reaction tower with pneumatic whipping appts of the present invention, described main passage is horizontal-extending, described wing passage is inclined on the sidewall of described main passage, the angle that the axis of described wing passage and the axis of described main passage are formed is 8-15 ��, thus make high-temperature steam have two motion components of upwards injection and horizontal-jet, make occurred level and the vertical stirring simultaneously of high molecular polymerization raw material, further increase stirring effect, and make high-temperature steam to upper impact high molecular polymer raw material, drive the gentle vertical movement of high molecular polymer raw water, tower body 1 inner macromolecule polymer raw material is more even.
(4) reaction tower with pneumatic whipping appts of the present invention, owing to wing passage has shunted part steam from main passage, in order to prevent vapo(u)r blasting decrease in velocity, the diameter of main jet gas port is set to little 1.30-1.40 times than main channel inlets place, ensures the vapo(u)r blasting speed from main jet gas port.
(5) reaction tower with pneumatic whipping appts of the present invention, distance along adjacent two the described blade in the vertical directions of described rotating shaft vertical axis is 400-600mm, simultaneously the diameter of the described main jet gas port on different blade and described side spray gas port reduces gradually along with the increase of height, make jet amount also along with highly increasing and reduce, due to highly more high blade from liquid level more close to, the time of the stop of the high-temperature steam of the tuyere ejection on highly more high blade in the high molecular polymer raw materials for production of liquid is more short, thus in order to ensure that all high-temperature steams can liquefy completely, thus by the diameter of described main jet gas port and described side spray gas port on different blade along with the increase of height reduces gradually, to make full use of steam.
(6) reaction tower with pneumatic whipping appts of the present invention, shape near the blade bottom described tower body is arch, shape bottom blade laminating tower body is arranged, and vertical spout is set on blade, it is to increase to the stirring effect of the high molecular polymer bottom tower body.
(7) reaction tower with pneumatic whipping appts of the present invention, at same height location place, connecting two the described blades in left and right in described rotating shaft, the described wing passage on blade described in side tilts to extend downwards, and the described wing passage on blade described in another side is inclined upwardly extension. So that upwards the amount of the gas of injection, Jet with downward flow direction is roughly the same, thus ensure the consistent of reaction vessel interior pressure.
(8) reaction tower with pneumatic whipping appts of the present invention, the other end of described main passage is provided with pressure limiting valve.Pressure limiting valve is opened automatically when the hypertonia of main passage, releases portion gas, main channel inner pressure can be prevented too high and damage whipping appts.
Accompanying drawing explanation
In order to make the content of the present invention be more likely to be clearly understood, below according to a particular embodiment of the invention and by reference to the accompanying drawings, the present invention is further detailed explanation, wherein
Fig. 1 is the structural representation of the high molecular polymer reaction vessel of an embodiment of the present invention.
In figure, Reference numeral represents and is: 1-tower body; 21-rotating shaft; 22-blade; 23-arch blade; 31-air flue; The main passage of 32-; 33-wing passage; The vertical spout of 34-.
Embodiment
Below in conjunction with accompanying drawing, the technical scheme of the present invention is described in detail.
Embodiment 1
The present embodiment provides a kind of reaction tower with pneumatic whipping appts, as shown in Figure 1, comprises,
Tower body 1, for cylinder has accommodation space;
Whipping appts, comprises the rotating shaft 21 can rotated under power set drives vertically being arranged on described tower body 1 central position, and along some blades 22 that the axially spaced-apart of the vertical direction of described rotating shaft 21 is arranged in described rotating shaft 21;
Described rotating shaft 21 hollow forms air flue 31, described blade 22 form along the axial arranged main passage 32 of described blade 22, and form the wing passage 33 of certain angle setting with described main passage 32, described main passage 32 is connected with described air flue 31, and extending to form main jet gas port toward the axial direction due of described blade 22, described wing passage 33 is connected with described main passage 32 and the radial direction of past described blade 22 extends to form side spray gas port;
The width of described air flue 31: the width of described main passage 32: the width of described wing passage 33=: 2-3:1:0.5-0.8; Vertical gap between described main jet gas port and the inwall of tower body 1 is 80-100mm, and the distance of described blade 22 in the vertical direction of adjacent two is 400-600mm;
One end of described air flue 31 is connected with steam steam line, so that extraneous steam enters described air flue 31, sprays in described tower body 1 finally by described main jet gas port and described side spray gas port;
Arranging some pressure release valves 4 on the sidewall of described reaction tower, described pressure release valve 4, by return line 5 and accumulator unit 6, arranges the 2nd check valve on the communication path of accumulator unit and described return line 5, and described 2nd check valve can only be opened to described accumulator unit. The sidewall of described reaction tower arranges some pressure release valves, in reaction tower during hypertonia, can carrying out pressure release by pressure release valve, in pressure leak process, portion gas enters the return line being positioned at reaction tower outside, when in return line, gaseous tension is bigger, 2nd one-way valve opens, so that the gas in return line enters in accumulator unit, and collects, can utilizing further, energy-saving effect is better.
In the above-mentioned reaction tower with pneumatic whipping appts, whipping appts and steam are led to into synthesis of mechanism integral, the rotating shaft 21 and blade 22 of whipping appts form high-temperature steam circulation passage, high-temperature steam sprays from the tuyere blade 4, owing to multiple blade 22 and multiple tuyere are all positioned at tower body 1 inside, the effect of dispersion steam can be played on the one hand, promote that steam liquefies at tower body 1, make steam with heat be fully discharged in tower body 1, the soft water as high molecular polymer raw materials for production is defined after steam liquefied, blade and tuyere also can follow axis of rotation on the other hand, make each position that steam more evenly arrives in tower body, improve high-temperature steam to the mixing effect of still body inner macromolecule polymer raw material, make the reaction of high molecular polymer more abundant, evenly, unreacted polymerization single polymerization monomer content is low, and the molecular weight of high molecular polymer is comparatively even,And, the width of described air flue: the width of described main passage: the width of described wing passage=: 2-3:1:0.5-0.8, vertical gap between described main jet gas port and the inwall of tower body 1 is 80-100mm, the distance of described blade 22 in the vertical direction of adjacent two is 400-600mm, now, steam utilization is up to the highest, and ensures that air pressure inside can not be too high and cause danger; By arranging side spray gas port and main jet gas port, high-temperature steam is made to have multiple jet direction, further increase the mixing effect of high-temperature steam, and enable high-temperature steam be more prone to liquefaction in high molecular polymerization raw material and form soft water, prevent hypertonia in still body 1.
Further, the angle formed between described main passage 32 and horizontal plane is 3-4 ��, described main passage 32 is horizontal-extending, described wing passage 33 is inclined on the sidewall of described main passage 32, the angle that the axis of the axis of described wing passage 33 and described main passage 32 is formed is 8-15 ��, such as 8 ��, 10 ��, 12 ��, 15 �� etc. This kind of setting makes high-temperature steam have two motion components of upwards injection and horizontal-jet, make occurred level and the vertical stirring simultaneously of high molecular polymerization raw material, further increase stirring effect, and make high-temperature steam to upper impact high molecular polymer raw material, driving the gentle vertical movement of high molecular polymer raw water, tower body 1 inner macromolecule polymer raw material is more even; Further, main passage 32 tilts certain angle a little with horizontal plane, it is ensured that gas enters wing passage from primary passageway stream with having certain rotation direction, has higher transition effect.
Further, the diameter of described main jet gas port is 20-40mm, and the diameter of described side spray gas port is 10-20mm. The diameter of described main passage 32 becomes big gradually from one end of main jet gas port towards the one end being connected with described air flue 31, the diameter of one end that described main passage 32 is connected with described air flue 31 is 1.30 times of described main jet gas port diameter, can also be the arbitrary value in 1.30-1.40 times, such as 1.40 times.
Owing to wing passage 33 has shunted part steam from main passage 32, in order to prevent vapo(u)r blasting decrease in velocity, the diameter of main jet gas port is set to little 1.30-1.40 times than main passage 32 ingress, ensures the vapo(u)r blasting speed from main jet gas port.
Further, distance along adjacent two the described blade in the vertical directions of described rotating shaft vertical axis is 400-600mm, such as 400mm, 500mm, 600mm etc., the described main jet gas port on the described blade 22 being positioned at lower on the described blade 22 of adjacent two and the diameter of described side spray gas port are 1.1 times of the diameter of described main jet gas port and the described side spray gas port being positioned on the described blade 22 of eminence, can also be the arbitrary value in 1.1-1.2 times, such as 1.2 times.
The distance of described blade 22 in the vertical direction of adjacent two is 400-600mm, simultaneously the diameter of the described main jet gas port on different blade 22 and described side spray gas port reduces gradually along with the increase of height, the jet amount made also reduces along with highly increasing, due to highly more high blade 22 from liquid level more close to, the time of the stop of the high-temperature steam of the tuyere ejection on highly more high blade 22 in the high molecular polymer raw materials for production of liquid is more short, thus in order to ensure that all high-temperature steams can liquefy completely, thus by the diameter of described main jet gas port and described side spray gas port on different blade 22 along with the increase of height reduces gradually, to make full use of steam.
Further, the shape near the blade 22 bottom described tower body 1 is arch, has and the vertical spout of described rotating shaft 21 axis being parallel. Preferably, the diameter of described vertical spout is 75mm, and as distortion, described vertical spout can also be the arbitrary value in 50-80mm, such as 50mm, 60mm, 70mm, 80mm etc.
Shape near the blade 22 bottom described tower body 1 is arch (being arch blade 23 in Fig. 1), blade 22 shape bottom tower body 1 of fitting is arranged, and vertical spout 34 is set on blade 22, it is to increase to the stirring effect of the high molecular polymer bottom tower body 1.
Entering one not, at same height location place, described rotating shaft 21 connects two the described blades 22 in left and right, the described wing passage 33 on blade 22 described in side tilts to extend downwards, and the described wing passage 33 on blade 22 described in another side is inclined upwardly extension. So that upwards the amount of the gas of injection, Jet with downward flow direction is roughly the same, thus ensure the consistent of reaction vessel interior pressure.
Further, the other end of described main passage 31 is provided with pressure limiting valve.
The other end of described main passage 31 is provided with pressure limiting valve. Pressure limiting valve is opened automatically when the hypertonia of main passage 31, releases portion gas, can prevent hypertonia in main passage 31 and damage whipping appts.
Reaction tower described in above-described embodiment, is illustrated in figure 1 round shape, it is possible to think other shape.
In order to keep temperature in still body 1, the coil pipe arranged around tower body 1 also can be set at tower body 1 outer wall, make still body 1 temperature remained constant by leading in coil pipe into hot water.
What deserves to be explained is, for making high molecular weight reactive raw material enter in tower body 1, tower body 1 has opening for feed 12 for leading in tower body 1 for various raw material or other gas (such as nitrogen) near top.
Obviously, above-described embodiment is only for example is clearly described, and not to the restriction of the mode of enforcement. For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description. Here without the need to also cannot all enforcement modes be given exhaustive. And the apparent change thus extended out or variation are still among the protection domain of the invention.
Claims (8)
1. the reaction tower of a blast protection, it is characterised in that, comprise,
Tower body (1), for cylinder has accommodation space;
Whipping appts, comprise the rotating shaft (21) can rotated under power set drives vertically being arranged on described tower body (1) central position, and along some blades (22) that the axially spaced-apart of the vertical direction of described rotating shaft (21) is arranged in described rotating shaft (21);
It is characterized in that, described rotating shaft (21) hollow forms air flue (31), described blade (22) form along the axial arranged main passage (32) of described blade (22), and form the wing passage (33) of certain angle setting with described main passage (32), described main passage (32) is connected with described air flue (31), and extend to form main jet gas port toward the axial direction due of described blade (22), described wing passage (33) is connected with described main passage (32) and the radial direction of past described blade (22) extends to form side spray gas port,
The width of described air flue (31): the width of described main passage (32): the width of described wing passage (33)=: 2-3: 1: 0.5-0.8; Vertical gap between the inwall of described main jet gas port and tower body (1) is 80-100mm, and the distance of two adjacent described blade (22) in the vertical directions is 400-600mm;
One end of described air flue (31) is connected with steam steam line, so that extraneous steam enters described air flue (31), sprays in described tower body (1) finally by described main jet gas port and described side spray gas port;
The sidewall of described reaction tower arranges some pressure release valves (4), described pressure release valve (4) is by return line (5) and accumulator unit, arranging the 2nd check valve on the communication path of accumulator unit and described return line (5), described 2nd check valve can only be opened to described accumulator unit.
2. the reaction tower of blast protection according to claim 1, it is characterized in that, the angle formed between described main passage (32) and horizontal plane is 3-4 ��, described main passage (32) is horizontal-extending, described wing passage (33) is inclined on the sidewall of described main passage (32), and the angle that the axis of described wing passage (33) and the axis of described main passage (32) are formed is 8-15 ��.
3. the reaction tower of blast protection according to claim 1 and 2, it is characterised in that, the diameter of described main jet gas port is 20-40mm, and the diameter of described side spray gas port is 10-20mm.
4. the reaction tower of blast protection according to claim 3, it is characterized in that, the diameter of described main passage (32) becomes big gradually from one end of main jet gas port towards the one end being connected with described air flue (31), and the diameter of one end that described main passage (32) is connected with described air flue (31) is 1.30-1.40 times of described main jet gas port diameter.
5. the reaction tower of blast protection according to claim 4, it is characterized in that, in two described blades (22) adjacent on described rotating shaft (21) vertical axis, the described main jet gas port being positioned on the described blade (22) of lower and the diameter of described side spray gas port are 1.1-1.2 times of the described main jet gas port being positioned on the described blade (22) of eminence and described side spray gas port diameter.
6. the reaction tower of blast protection according to claim 5, it is characterised in that, it is arch near the shape of the blade (22) of described tower body (1) bottom, has and the vertical spout of described rotating shaft (21) axis being parallel; The diameter of described vertical spout is 50-80mm.
7. the reaction tower of blast protection according to any one of claim 1-6, it is characterized in that, at same height location place, described rotating shaft (21) is upper connects two the described blades (22) in left and right, described wing passage (33) on blade described in side (22) tilts to extend downwards, and the described wing passage (33) on blade (22) described in another side is inclined upwardly extension.
8. the reaction tower of blast protection according to any one of claim 1-7, it is characterised in that, the other end of described air flue (31) is provided with pressure limiting valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511000699.2A CN105642219A (en) | 2015-12-28 | 2015-12-28 | Blast-resistant reaction tower |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511000699.2A CN105642219A (en) | 2015-12-28 | 2015-12-28 | Blast-resistant reaction tower |
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| CN105642219A true CN105642219A (en) | 2016-06-08 |
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| US20050077659A1 (en) * | 2002-02-25 | 2005-04-14 | Young-Nam Kim | Nano-powder extraction apparatus using a hollow impeller |
| CN202105611U (en) * | 2011-04-20 | 2012-01-11 | 江苏赛欧信越消泡剂有限公司 | Heating and mixing paddle of polymerization reactor |
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Application publication date: 20160608 |