WO2011130901A1 - 一种动态孔射流式反应器及采用该反应器制备异氰酸酯的方法 - Google Patents
一种动态孔射流式反应器及采用该反应器制备异氰酸酯的方法 Download PDFInfo
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- WO2011130901A1 WO2011130901A1 PCT/CN2010/071883 CN2010071883W WO2011130901A1 WO 2011130901 A1 WO2011130901 A1 WO 2011130901A1 CN 2010071883 W CN2010071883 W CN 2010071883W WO 2011130901 A1 WO2011130901 A1 WO 2011130901A1
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- mixing reaction
- diisocyanate
- tubular mixing
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- tubular
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Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C263/00—Preparation of derivatives of isocyanic acid
- C07C263/10—Preparation of derivatives of isocyanic acid by reaction of amines with carbonyl halides, e.g. with phosgene
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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
- B01J19/18—Stationary reactors having moving elements inside
-
- 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
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
Definitions
- the present invention relates to a dynamic pore jet reactor, and a process for producing an isocyanate by reacting an aliphatic or aromatic amine-based organic substance with phosgene in a liquid phase.
- the preparation of isocyanates by liquid phase phosgenation has the characteristics of mild conditions and stable handling. During this process, the aliphatic or aromatic amine organics are first reacted with phosgene in a solvent to form carbamoyl chloride and HC 1, HC 1 will rapidly react with other amine groups to form the amino hydrochloride. Excess phosgene in the system will continue to react with the amino hydrochloride to form carbamoyl chloride and liberate HC1. This is the cold reaction process in the commonly used two-step phosgenation process.
- Both the carbamoyl chloride and the aminohydrochloride in the course of the reaction are intermediates in the synthesis of isocyanates and are all solid materials.
- the inevitability of the existence of solid intermediates brings many difficulties to the design of the reactor.
- the reactor should provide sufficient mixing strength to ensure efficient mixing reaction, on the other hand, it can effectively prevent solid intermediates from hanging or blocking the mixing.
- the reaction channel and can be easily cleaned when a clogging phenomenon occurs. It has been proven that the mixed reaction part has become one of the main bottlenecks limiting the production capacity and energy consumption of various isocyanate production units. For many years, both academic and business circles have been making unremitting efforts and explorations for this same problem.
- No. 5,931,579, US 4,915, 509 describes a rotor-stator type mixed reactor.
- one fluid enters the mixing chamber through a circular hole in the center of the front plate, and the other fluid enters the mixing chamber through a series of holes arranged concentrically on the front plate.
- a multi-layer sieve plate is arranged in the mixing chamber to be staggered and fixed on the stator and the rotor, and the high-pressure reaction liquid is ground by the rotating stator when passing through the layer, so that a fast mixing and uniform dispersion effect is achieved.
- the reactor structure is complex Miscellaneous, once blocked, cleaning will become very difficult.
- U.S. Patent No. 5,017,048 describes a orifice jet type reaction mixer in which a material passes through a plurality of holes in a lumen to enter another material to enhance mixing. Despite this, the mixing effect of the reaction mixer during industrial scale-up is still very limited, and the frequent clogging of the reactor in the manufacture of isocyanate cannot be solved in time.
- CN200910069917 describes a tubular tube impinging stream reactor for producing toluene diisocyanate, one material is sprayed through a jet orifice jet on the lower tube sheet, and the other fluid is expanded through a vertical tube tube and a tube.
- the tube nozzle is jetted at a certain angle to the incident stream mixing zone to collide with the first material to achieve mixing.
- the reactor has a weak mixing intensity, a long reaction residence time, and often a large solid aggregate, which not only easily blocks the reactor, but also blocks or contaminates subsequent reaction equipment.
- CN200910306519 describes a tubular reactor in which a central injector is arranged, the central injector having a conical baffle and a nozzle, and the tubular reactor wall is provided with a baffle.
- the mixing effect of the reactor is very limited, and the solid product is easy to hang on the wall, and once the reactor is blocked, it needs to be cleaned up.
- the object of the present invention is to provide a dynamic pore jet mixing reactor and a method for preparing an isocyanate by reacting an aliphatic or aromatic amine organic substance with phosgene in a liquid phase, thereby overcoming the above existing reactor Defects.
- the dynamic pore jet mixing reactor provided by the present invention is as follows:
- the reactor includes internal feed a feeding tube, an outer feeding tube, a tubular mixing reaction head, a gear box, a transmission shaft and a transmission connecting wheel; wherein the transmission shaft, the inner feeding tube and the outer feeding tube are coaxially arranged from the inside to the outside,
- the outer feeding tube is connected to the gear box and coaxially arranged from top to bottom.
- the gear box is provided with a gear and a tubular mixing reaction head having a plurality of material inlet passages, and the gear and the tubular mixing reaction nozzle pass
- the material inlet tunnels are fitted to each other and fit to the inner wall of the gear box, and the gear shaft is also provided with a gear shaft track for limiting;
- the inner feeding tube is connected with the tubular mixing reaction nozzle and is top-down
- the shaft mixing reaction nozzle rotates axially under the driving of the transmission shaft and the transmission connecting wheel, thereby driving the rotation of the gear in the gear box; the transmission connecting wheel can reciprocate up and down in the tubular mixing reaction nozzle motion.
- the reaction channel formed between the transmission shaft and the inner feed tube is referred to as an inner reactant passage, and between the inner feed tube and the outer feed tube.
- the resulting reaction channel is referred to as the outer reactant channel.
- the ratio of the cross-sectional area of the outer reactant channel to the inner reactant channel is 0. 5 ⁇ 24: 1, preferably 0. 75 ⁇ 12 : 1, more preferably 1 ⁇ 7 5 : 1.
- the ratio of the cross-sectional area of the channel in the tubular mixing reaction head to the inner reactant channel is 0.5 to 4:1, preferably 0.75 to 3:1.
- the number of the gears in the gearbox is generally from 1 to 8, preferably 2, 4, 6 or 8, more preferably 2 or 4. 5 ⁇
- the diameter of the root diameter of the gear is 0. 25 ⁇ 4 times, preferably 0. 5 ⁇ 2 times.
- the material inlet passage (or simply the material passage) is disposed on the pipe wall of the tubular reaction head to form a hole in which the material enters the reaction head.
- the material inlet channels may be arranged or distributed from top to bottom in a range of 1 to 20 ⁇ , preferably 2 to 12 ⁇ , more preferably 3 to 8 ⁇ ; each ⁇ has 8 to 40 40
- each of the channels has 12 - 24 channels per opening; the opening direction of each of the material inlet channels is perpendicular to the axial direction of the reactor, and is preferably evenly disposed in the radial direction of the tube wall of the tubular reaction head.
- the cross-sectional shape of the material entering the tunnel is a right angle or a rounded rectangle, a right angle or a rounded square, a triangle, a diamond, a trapezoid, an equilateral or non-equal polygon, a circle or an ellipse, and the like.
- the adjacent two material inlet channels may have the same or different cross-sectional shape, channel size and alignment. All things
- the sum of the dimensions of the feed entry channels ie the sum of the cross-sectional areas should ensure that the material pressure in the set outer material passage and the material pressure in the inner material passage are entered from the outer material passage via the gearbox and the bores.
- the ratio of the flow rate of the reaction mass in the tubular mixing reaction head to the flow rate of the reaction material entering the tubular mixing reaction head from the outlet at the bottom of the inner material passage satisfies the two reactions required for the reaction.
- the mass ratio or molar ratio of the substance is required. 5 ⁇ 1.
- the ratio of the ratio of the pure phosgene to the mass of the pure TDA is about 3. 4-4. 2: 1, or about 3. 8: 1.
- the material pressure in the outer material passage is adjusted according to the conventional process calculation.
- the material pressure in the inner material passage can also adjust the mass or molar ratio of the two reactants entering the tubular mixing reaction nozzle. This is readily accomplished by those skilled in the art and can be adjusted to the actual needs of the reaction.
- the tubular mixing reaction head has different wall thicknesses up and down, but preferably the inner diameter is the same as the upper and lower sides; further preferably, the material enters the portion where the tunnel is located
- the wall thickness is 1 to 5 times, preferably 1. 5 to 3 times, of the wall thickness of the lower end of the tubular mixing reaction head. That is to say, the wall of the tubular reaction head provided with a plurality of materials entering the tunnel is of equal thickness or thicker (compared with other portions of the tubular reaction head such as the wall thickness of the end of the reaction head) ).
- the transmission connecting wheel can reciprocate up and down in a manual or automatic manner in the tubular mixing reaction head, preferably by mechanical automatic means.
- the transmission is reciprocated up and down while maintaining rotation, and the reciprocating frequency is 1 time/day to 1 time/minute, preferably 5 to 288 times/day, more preferably 5 to 48 times/ day. Further preferably, the reciprocating frequency of the drive coupling wheel can be adjusted stepwise.
- the rotation speed of the transmission connecting wheel is l ⁇ 120r / min, preferably 6 ⁇ 60r / min o that is, the rotation speed of the transmission connecting wheel to drive the tubular mixing reaction head is l ⁇ 120r / min, preferably 6 ⁇ 60r/min, here refers to the speed of the two together (ie the same speed).
- the dynamic pore jet reactor provided by the present invention is generally made of steel, glass, ceramic, Made of alloy, silicon carbide or enamel steel.
- the method for preparing an aliphatic, alicyclic or aromatic isocyanate represented by the general formula (I) by using a dynamic pore jet mixing reactor provided by the present invention is as follows:
- an organic solution of one or more amines or amines of the general formula (II) enters the rotating tubular mixing reaction head through the inner reactant passage; or enters the gearbox through the outer reactant passage and then passes through the material
- the orifice is injected into the rotating tubular mixing reaction head in a flow direction perpendicular to the inner stream; the material enters the tunnel to enter the rotating tubular mixing reaction head perpendicular to the flow direction of the inner stream; or enters through the inner reactant passage Rotating tubular mixing reaction nozzle;
- R is an aliphatic C2-C50 hydrocarbyl group, an alicyclic C2-C50 hydrocarbyl group or an aromatic C6-C50 hydrocarbyl group, more preferably R is an aliphatic C4-C30 hydrocarbyl group, an alicyclic C4-C30 hydrocarbyl group or an aromatic C6-C30 group.
- Hydrocarbyl group further preferably R is an aliphatic C5-C18 hydrocarbon group, an alicyclic C5-C18 hydrocarbon group or an aromatic C6-C20 hydrocarbon group.
- the isocyanate having the formula (I) is generally 2,4-/2,6-toluene diisocyanate having a ratio of isomers of 100/0 to 80/20 or 65/35, Phenylmethane 4,4,-diisocyanate, dicyclohexylmethane 4,4,-diisocyanate, isophorone diisocyanate, 1,6-hexamethylene diisocyanate, 1, 4-cyclohexane diisocyanate, 1, 8 -diisocyanato-4-(isocyanatomethyl)octane, triisocyanate, 1, 4-butane diisocyanate, naphthalene diisocyanate, p-phenylene diisocyanate, benzodiacyl Diisocyanate, cyclohexane dimethylene Isocyanate, trimethyl-1,6-hexamethylene diisocyanate, tetramethylm-xylylene di
- the amine organic compound having the general formula (II) is generally a mixture of 2, 4-/2, 6-toluenediamine having an isomer ratio of 80/20 or 65/35 or pure.
- steps (a) and (b) comprise diluting the amine and phosgene with an inert solvent generally selected from the group consisting of: benzene, toluene, chlorobenzene, o-dichlorobenzene, p-dichloro One or more of benzene, monochlorobiphenyl, dialkyl terephthalate or diethyl phthalate.
- concentration of the polyamine organic solution is generally from 12.5 wt% to 45 wt%, preferably from 15 to 25 wt%. /.
- said inner axial fluid passage reactant flow line speed is generally 0.8 ⁇ 14.6m / s, preferably 2.0 ⁇ 8.2 m / s; the material of the outer reactant channel through the material into the tunnel vertical injection into the tubular mixing reaction nozzle line speed is 1 ⁇ 9 times the axial flow line velocity of the inner stream, Preferably 1.2 to 5.5 times.
- the material pressure of the inner reactant channel and the outer reactant channel is generally 1-20 bar, preferably 5-15 bar; when the total area of the material entering the channel is larger than the cross-sectional area of the inner reactant channel
- the pressure of the outer reactants is raised separately, the speed is maintained 1 to 9 times;
- the outlet pressure of the tubular mixing reaction nozzle is generally 1 to 15 bar, preferably 5 to 10 bar.
- the first step reaction will inevitably produce an amino group.
- Formyl chloride and aminohydrochloride the inevitability of the presence of this solid intermediate makes it easy to accumulate solids in the jet reactor.
- the accumulation of solid intermediates will destroy the mixing reaction and cause more vicious cycles of solid accumulation, thus reducing
- the traditional practice is to first flush with high-pressure solvent or phosgene, and find that the flushing is invalid and then stop and repair, that is, manually clean the reactor. This practice greatly reduces the efficiency of the device and increases many safety hazards.
- the reactor provided by the invention is provided with a continuously rotating gear, a tubular mixing reaction nozzle and a transmission connecting wheel which can reciprocate up and down, and the flushing function of the reaction material itself can smoothly push the solid intermediate product into the reaction area, thereby ensuring The smoothness of the tunnel in the reaction zone and the long-term high load and stable operation of the entire device.
- the reactor provided by the invention has a tubular mixing reaction head having a plurality of material inlet holes, and the adjacent two materials can be differently sized, shaped and aligned, thereby improving the condition.
- the material mixing efficiency further reduces the ratio of phosgene and solvent to the raw material amine, improves the productivity of the original device, improves the product quality, and reduces the energy consumption.
- Figure 1 is a schematic view showing the structure of a dynamic pore jet reactor in accordance with a preferred embodiment of the present invention.
- Figure 2 is a cross-sectional view of the reactor shown in Figure 1 taken along the A - A direction.
- Figure 3 is a schematic illustration of the construction of a dynamic orifice jet reactor in accordance with another preferred embodiment of the present invention.
- Figure 4 is a cross-sectional view of the reactor shown in Figure 3 taken along the line A' - A'. detailed description
- axial and radial refer to the axial and radial directions of the reactor, respectively, unless otherwise specified.
- reference to “amine” or “polyamine” is referred to in this application.
- “Amine” or “polyamine” or “amine solution” or “polyamine solution” may be used interchangeably when either “amine (organic) solution” or "(organic) polyamine solution”.
- the present invention is vertical, lateral, up and down, etc., but the invention does not exclude other possible mounting arrangements, such as a slightly tilted mounting. Therefore, vertical installation should not be construed as limiting the reactor and method of preparation of the present invention.
- the dynamic pore jet reactor provided by the invention comprises an inner portion having a coaxial sleeve structure
- the gear case 6 connected to the outer reactant passage 3 is provided with a gear 7 and a tubular mixing reaction head 5 having a plurality of material inlet passages 8.
- the material inlet tunnel 8 and the inner wall of the gearbox circumference belong to the gear fitting zone 9, and are fitted with the limit of the gear shaft track 10.
- the motor installed outside the reactor drives the tubular mixing reaction nozzle 5 to rotate axially through the gearbox and the transmission shaft 1 and the transmission connecting wheel 4, and at the same time, the material entering the tunnel 8 and the gear 7 have a matching tooth and slot structure, which can be driven.
- the gear 7 rotates and revolves within the gearbox 6.
- the present invention has no particular requirement for the rotational speed of the gear 7 to rotate within the gearbox 6, and there is no particular requirement for the rotational speed of its revolution along the main shaft of the reactor.
- the speed of the gear depends on the ratio of the diameter of the root circle of the gear to the outer diameter of the mixing reaction head. The speed of the gear does not matter, as long as it is turned.
- the reactor structure shown in Figures 1 and 2 is one of the preferred embodiments of the present invention.
- Two gears are arranged in the gear box, and a tubular mixing reaction nozzle is provided with a material entering the tunnel 8, and the material enters the tunnel.
- the cross-sectional shape is a rectangle. Therefore, the gear that meshes with the material entry tunnel should have a toothed, slotted configuration that conforms to the rectangular bore.
- the gear is driven by a tubular mixing reaction nozzle with a hole (ie, a material hole or a material entering the tunnel), and the transmission connecting wheel disposed between the transmission shaft and the tubular mixing reaction head can be automatically moved up and down in the tubular mixing reaction nozzle. Reciprocating, thereby achieving automatic online cleaning of the reactor of the present invention.
- the reactor structure shown in Fig. 3 and Fig. 4 is another preferred embodiment of the present invention.
- one gear is arranged in the gear box, and the tubular mixing reaction nozzle is provided with 2 ⁇ material entering the tunnel 8, And the cross-sectional shape, size and alignment of the material entering the tunnel The material enters the groove and the matching structure of the hole.
- the gear is driven by the tubular mixing reaction nozzle with holes, and the transmission connecting wheel disposed between the transmission shaft and the tubular mixing reaction nozzle can automatically reciprocate up and down, thereby realizing automatic online cleaning of the mixing reactor.
- Embodiment 1 is a diagrammatic representation of Embodiment 1:
- an organic solution of one or more amines or amines of the general formula (II) is passed through the inner reactant channel 1 into the rotating tubular mixing reaction head 5; , the pure phosgene liquid or phosgene solution enters the gear box 6 through the outer reactant channel 3, and then enters the rotating tubular mixing reaction head 5 through the material inlet channel 8 in a direction perpendicular to the inner stream; the amine side and the light
- the gas-side materials are collected by the two-way reactant channels in the rotating tubular mixing reaction nozzle 5 under the respective raw material conveying pressures for rapid mixing reaction, and the reaction liquid is pushed by the high-pressure raw material and the gear 7 and the transmission connecting wheel 4 With the cooperation, the tubular mixing reaction nozzle 5 is quickly passed through, and then proceeds into the downstream reaction vessel to continue and finally complete the reaction.
- Embodiment 2 is a diagrammatic representation of Embodiment 1:
- An organic solution having one or more amines or amines of the general formula (II) is passed through the outer reactant channel 3 into the gearbox 6 and then through the material inlet port 8 using a reactor as shown in Figures 1 and 1.
- the rotating tubular mixing reaction head 5 is injected perpendicularly to the flow direction of the inner stream; at the same time, the pure phosgene liquid or phosgene solution enters the rotating tubular mixing reaction head 5 through the inner reactant channel 2; the amine side and the phosgene
- the side materials are collected in the rotating tubular mixing reaction head 5 through the two side reactant channels under the respective raw material conveying pressures for rapid mixing reaction, and the reaction liquid is pushed by the high-pressure raw material and the gear 7 and the transmission connecting wheel 4 Rapidly under the tube
- the reaction nozzle 5 is mixed so as to proceed into the downstream reactor and continue to complete and finally complete the reaction.
- Embodiment 3 is a diagrammatic representation of Embodiment 3
- an organic solution of one or more amines or amines of the general formula (II) is passed through the inner reactant channel 1 into the rotating tubular mixing reaction head 5; , the pure phosgene liquid or phosgene solution enters the gear box 6 through the outer reactant channel 3, and then enters the rotating tubular mixing reaction head 5 through the material inlet channel 8 in a direction perpendicular to the inner stream; the amine side and the light
- the gas-side materials are collected by the two-way reactant channels in the rotating tubular mixing reaction nozzle 5 under the respective raw material conveying pressures for rapid mixing reaction, and the reaction liquid is pushed by the high-pressure raw material and the gear 7 and the transmission connecting wheel 4 With the cooperation, the tubular mixing reaction nozzle 5 is quickly passed through, and then proceeds into the downstream reaction vessel to continue and finally complete the reaction.
- Embodiment 4 is a diagrammatic representation of Embodiment 4:
- a rectangular rectangular material is placed in the pipe wall of the tubular mixing reaction nozzle into the tunnel, the number of material entering the tunnel is 12, and the material entering the tunnel is perpendicular to the reactor in the tubular mixing reaction nozzle.
- the axial direction is aligned with each other and equally spaced, and the aspect ratio of the rectangular channel is 2:1; the root diameter of the gear is outside the hole of the tubular mixing reaction head 1.5 times of the diameter, two gears are arranged in the gearbox; the inner diameter of the tubular mixing reaction nozzle is equal to the inner diameter of the inner reactant channel; the tubular mixing reaction nozzle has a rotational speed of 60r/min, and the transmission connecting wheel has a vertical frequency of 1st. /hour.
- the mass ratio of pure phosgene to pure TDA is 3.8: 1, and the pure TDA feed rate is 5kg/h.
- the phosgene solution enters the gearbox through the outer reactant channel, and is further injected into the tubular mixing reaction nozzle through the material inlet channel; the TDA solution enters the tubular mixing reaction nozzle through the inner reactant channel; the delivery pressure of both materials is 7.5 bar.
- the temperature of the phosgene solution is (TC:, the temperature of the TDA solution is 85 ° C.
- the two materials are rapidly contacted and reacted in the tubular mixing reaction head, and the formed reaction liquid is discharged from the tubular mixing reaction head into the subsequent reactor.
- the subsequent stirred reaction temperature was about 125 ° C and the residence time in the subsequent reactor was 45 minutes.
- two rectangular materials are placed in the pipe wall of the tubular mixing reaction nozzle into the tunnel, and the number of each channel is 12, and each of them is aligned with each other and equally spaced, and the aspect ratio of the rectangular channel is as shown in FIG. 2: 1, the upper and lower borings are staggered; the gear diameter of the gear is 1.5 times the outer diameter of the tunnel mixing reaction nozzle, and there are two gears, the inner diameter of the tubular mixing reaction nozzle and the inner diameter of the inner reactant passage. Equivalent; the speed of the tubular mixing reaction nozzle is 60r/min, and the frequency of the upper and lower reciprocating of the transmission splicing wheel is 6 times/hour.
- TDA Toluene diamine
- phosgene (C0C1 2 ) 0DCB solution The mass concentration is 75 ° /.
- the mass ratio of pure phosgene to pure TDA is 4: 1, and the pure TDA feed rate is 5kg/h.
- the phosgene solution enters the gearbox through the outer reactant channel, and is further injected into the tubular mixing reaction nozzle through the material inlet channel; the TDA solution enters the tubular mixing reaction nozzle through the inner reactant channel; the delivery pressure of both materials is 7.5 bar.
- the temperature of the phosgene solution is (TC:, the temperature of the TDA solution is 85 °C, The two materials are rapidly contacted and reacted in the tubular mixing reaction nozzle, and the formed reaction liquid is discharged from the tubular mixing reaction nozzle into the subsequent reactor, and the subsequent stirring reaction temperature is about 125 ° C, and the residence time is 45 minutes and 20 seconds. .
- three rectangular material holes are arranged in the pipe wall of the tubular mixing reaction head, and the number of each hole from the top to the bottom is 24, 18, and 12, respectively. Since the tunnels are aligned and equally spaced on each of the turns, the three tunnels are sequentially increased from top to bottom, and the width of the first tunnel is a, and the widths of the second and third pupils are 4a/3 and 2a. Adjacent two pupils are staggered up and down.
- the aspect ratio of the rectangular channel is 2:1; the diameter of the root circle of the gear is 1.5 times the outer diameter of the opening of the tubular mixing reaction head.
- a total of four gears are arranged in the gearbox; the inner diameter of the tubular mixing reaction nozzle is equal to the inner diameter of the inner reactant passage tube; the tubular mixing reaction nozzle has a rotational speed of 60 r/min, and the transmission coupling wheel has an up-and-down reciprocating frequency of 6 times/hour.
- the solution mass concentration was 75 ° /.
- the ratio of pure phosgene to pure TDA is 3. 5: 1
- pure TDA feed rate is 5kg / h.
- the singularity of the material is 7. 5bar. .
- the temperature of the phosgene solution is (TC:, the temperature of the TDA solution is 85 °C, the two materials are rapidly contacted and reacted in the tubular mixing reaction head, and the formed reaction liquid is discharged from the tubular mixing reaction head into the subsequent reactor.
- the subsequent stirring reaction temperature is about 125 ° C, and the residence time is 40 minutes and 20 seconds.
- three round circular material channels are arranged in the pipe wall of the tubular mixing reaction head, and the number of each hole from the top to the bottom is 24, 18, and 12, and the rectangular holes are sequentially arranged.
- the aspect ratio is 2:1. Since the material entering the tunnel is aligned and equally spaced on each of the rafts, the three boring tunnels are sequentially increased from top to bottom.
- the width of the first boring tunnel is a, and the widths of the second and third boring tunnels are 4a/ 3 and 2 a. Adjacent two pupils are staggered up and down.
- the tooth root circle diameter of the gear is 1.5 times of the outer diameter of the opening portion of the tubular mixing reaction nozzle, and two gears are arranged in the gear box; the inner diameter of the tubular mixing reaction nozzle is equal to the inner diameter of the inner reactant passage tube; The reaction nozzle speed is 90r/min, and the transmission connecting wheel has a frequency of up to and down of 12 times/hour.
- the 0DCB solution has a mass concentration of 75°/.
- the mass ratio of pure phosgene to pure TDA is 3.5: 1
- pure TDA feed rate is 5kg / h.
- the singularity of the material is 7. 5bar. .
- the temperature of the phosgene solution is (TC:, the temperature of the TDA solution is 85 °C, the two materials are rapidly contacted and reacted in the tubular mixing reaction head, and the formed reaction liquid is discharged from the tubular mixing reaction head into the subsequent reactor.
- the subsequent stirring reaction temperature is about 125 ° C, and the residence time is 43 minutes and 40 seconds.
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BR112012025838-9A BR112012025838B1 (pt) | 2010-04-19 | 2010-04-19 | reator de jato com orifício dinâmico e processo para a preparção de isocianatos usando o referido reator. |
PCT/CN2010/071883 WO2011130901A1 (zh) | 2010-04-19 | 2010-04-19 | 一种动态孔射流式反应器及采用该反应器制备异氰酸酯的方法 |
SA111320382A SA111320382B1 (ar) | 2010-04-19 | 2011-04-18 | مفاعل ثقب ديناميكي نفاث وطريقة لتحضير مركبات أيزوسيانات باستخدام المفاعل المذكور |
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PCT/CN2010/071883 WO2011130901A1 (zh) | 2010-04-19 | 2010-04-19 | 一种动态孔射流式反应器及采用该反应器制备异氰酸酯的方法 |
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Cited By (4)
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WO2019058190A1 (en) * | 2017-09-19 | 2019-03-28 | Free Wheeler Ltd. | MIXING MACHINE AND ASSOCIATED METHODS |
CN112476931A (zh) * | 2020-10-30 | 2021-03-12 | 王蕊 | 一种改性聚氨酯材料的制备工艺 |
CN114749116A (zh) * | 2021-01-11 | 2022-07-15 | 万华化学集团股份有限公司 | 一种制备多异氰酸酯的方法及反应装置 |
CN116351361A (zh) * | 2023-03-07 | 2023-06-30 | 宜兴市阳洋塑料助剂有限公司 | 一种apd管道反应方法 |
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2010
- 2010-04-19 WO PCT/CN2010/071883 patent/WO2011130901A1/zh active Application Filing
- 2010-04-19 BR BR112012025838-9A patent/BR112012025838B1/pt active IP Right Grant
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2011
- 2011-04-18 SA SA111320382A patent/SA111320382B1/ar unknown
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CN101153015A (zh) * | 2006-09-28 | 2008-04-02 | 宁波万华聚氨酯有限公司 | 一种孔射流式反应器及利用该反应器制备异氰酸酯的方法 |
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CN101372463A (zh) * | 2007-08-21 | 2009-02-25 | 宁波万华聚氨酯有限公司 | 导流管型射流反应器及利用该反应器制备异氰酸酯的方法 |
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WO2019058190A1 (en) * | 2017-09-19 | 2019-03-28 | Free Wheeler Ltd. | MIXING MACHINE AND ASSOCIATED METHODS |
US11420168B2 (en) | 2017-09-19 | 2022-08-23 | Industrial Machineries Ltd. | Mixing machine and related methods |
CN112476931A (zh) * | 2020-10-30 | 2021-03-12 | 王蕊 | 一种改性聚氨酯材料的制备工艺 |
CN114749116A (zh) * | 2021-01-11 | 2022-07-15 | 万华化学集团股份有限公司 | 一种制备多异氰酸酯的方法及反应装置 |
CN114749116B (zh) * | 2021-01-11 | 2024-04-09 | 万华化学集团股份有限公司 | 一种制备多异氰酸酯的方法及反应装置 |
CN116351361A (zh) * | 2023-03-07 | 2023-06-30 | 宜兴市阳洋塑料助剂有限公司 | 一种apd管道反应方法 |
Also Published As
Publication number | Publication date |
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SA111320382B1 (ar) | 2014-09-15 |
BR112012025838B1 (pt) | 2019-01-29 |
BR112012025838A2 (pt) | 2017-03-28 |
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