CN1247302C - Ultragravity field rotary bed mass transfer and conversion unit - Google Patents
Ultragravity field rotary bed mass transfer and conversion unit Download PDFInfo
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- CN1247302C CN1247302C CN 200310103434 CN200310103434A CN1247302C CN 1247302 C CN1247302 C CN 1247302C CN 200310103434 CN200310103434 CN 200310103434 CN 200310103434 A CN200310103434 A CN 200310103434A CN 1247302 C CN1247302 C CN 1247302C
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- 238000012546 transfer Methods 0.000 title claims abstract description 35
- 238000006243 chemical reaction Methods 0.000 title abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 91
- 238000007789 sealing Methods 0.000 claims abstract description 32
- 239000003595 mist Substances 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims abstract description 6
- 230000002411 adverse Effects 0.000 claims description 40
- 230000004888 barrier function Effects 0.000 claims description 10
- 238000009826 distribution Methods 0.000 claims description 10
- 239000006260 foam Substances 0.000 claims description 9
- 239000000945 filler Substances 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 229910052755 nonmetal Inorganic materials 0.000 claims description 2
- 238000007747 plating Methods 0.000 claims description 2
- 239000011148 porous material Substances 0.000 claims description 2
- 230000001360 synchronised effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 11
- 239000012071 phase Substances 0.000 abstract description 7
- 239000007791 liquid phase Substances 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 239000007787 solid Substances 0.000 abstract description 2
- 238000006276 transfer reaction Methods 0.000 abstract 1
- 238000012856 packing Methods 0.000 description 8
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 230000008676 import Effects 0.000 description 4
- AOSFMYBATFLTAQ-UHFFFAOYSA-N 1-amino-3-(benzimidazol-1-yl)propan-2-ol Chemical compound C1=CC=C2N(CC(O)CN)C=NC2=C1 AOSFMYBATFLTAQ-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 2
- PQUCIEFHOVEZAU-UHFFFAOYSA-N Diammonium sulfite Chemical compound [NH4+].[NH4+].[O-]S([O-])=O PQUCIEFHOVEZAU-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000008258 liquid foam Substances 0.000 description 2
- 210000000952 spleen Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
The present invention discloses a mass transfer and reaction device of a rotary bed with a supergravity field, which comprises a casing, rotors, a rotary mist eliminator and a driving device, wherein the casing comprises a sealing head at an air inlet end, a straight barrel section and a sealing head at an air outlet end, the driving device is composed of a motor, a rotary shaft, a supporting bearing and a sealing system, the number of the rotors is two, each rotor is composed of two metal frames with a shared bottom board, an air phase and a liquid phase are contacted in a parallel-flow mode on one rotor, and are contacted in a counterflow mode on the other rotor, and the rotors are fixed on a shaft by the shared bottom board. The device of the present invention can be widely used for the mass transfer reaction processes of air-liquid, air-liquid-solid and air-liquid-liquid multiphase objects. The device of the present invention in one device can simultaneously complete parallel-flow and counterflow operation processes; thereby, the size of the device, middle pipelines and occupation areas are reduced, and energy consumption and device investment are lowered.
Description
Technical field
The present invention relates to a kind of centrifugal force and form revolving bed mass transfer and the consersion unit that super gravity field is strengthened mass transfer and course of reaction by RPB (following abbreviation revolving bed).
Background technology
Hypergravity field swinging bed mass transfer and consersion unit are a kind of novel devices that early eighties just grows up.Compare with routine techniques, this equipment has following characteristics: its mass transfer intensity height, and equipment size is little, and residence time of material is short, and liquid holdup is little, and the spotting out height is difficult for bubbling, and is difficult for stopping up, and is easy to maintenance, can make equipment operation reach stable in several minutes.
Common hypergravity field swinging bed equipment is made up of casing, rotor, material import and export, turning cylinder and motor.Filling porous medium in the rotor, material carries out mass transfer and reaction on the porous media surface, as Chinese patent literature CN1059105A, CN1062098A, disclosed revolving bed equipment such as CN1428189A.Because an equipment has only a rotor, therefore in a casing, can only realize a kind of mode of operation, as gas-liquid phase cocurrent cooling operation or counter-current operation.
In industrial production, usually can run into such operating process: a certain component in the gas phase need be removed, and this component that is absorbed by liquid phase needs to be concentrated to certain concentration and could send from system as product in liquid phase.This operating process air inclusion purifies and liquid phase concentrates two operations, finishes at two operational towers of industrial employing at present, if with common hypergravity field swinging bed device, need two and just can finish.That is to say that finishing this operating process needs a gas purification tower (or a gas purification hypergravity field swinging bed device) and a concentration tower (or a concentrated hypergravity field swinging bed device).
Summary of the invention
Purpose of the present invention realizes in a hypergravity field swinging bed device and stream and two kinds of modes of operation of adverse current exactly simultaneously, and removes the liquid foam in the gas.That is to say, use hypergravity field swinging bed device of the present invention, only need one just can finish concentrated two operations of above-mentioned gas purification and liquid phase simultaneously.
Hypergravity field swinging bed mass transfer of the present invention and consersion unit comprise casing, rotor, rotation mist eliminator and transmission device, and described casing comprises gas inlet end end socket, direct tube section and gas outlet end end socket; Described transmission device is made up of motor, turning cylinder, spring bearing and sealing system; It is characterized in that:
Described rotor is a birotor, is made up of two metal frames with shared base plate, and gas, liquid two-phase be also stream contact on a rotor, counter current contacting on another rotor; Rotor is fixed on the axle by shared base plate.
When implementing revolving bed mass transfer of the present invention and consersion unit, described gas inlet end end socket is provided with gas feed, and stream section liquid-inlet; Described gas outlet end end socket is provided with gas vent, adverse current section liquid-inlet; In the housing of consersion unit, the position corresponding with liquid-inlet is provided with liquid-inlet and is subjected to liquid bath and liquid distribution trough, and liquid distribution trough is a circular straighttube, and pipe is drilled with two rounds towards the one side of filler.The radical of pipe and the number in hole are determined by the amount of liquid.Computing formula is as follows:
The radical of pipe:
Wherein: the radical of N----pipe;
V
1----liquid volume flow;
U
1Permissible velocity of flow in----pipe is chosen by experience;
R----manages radius, is determined by mechanical strength.
Hole count on the pipe:
Wherein: the n----hole count;
V
1----liquid volume flow;
U
tThe ejection flow velocity in----hole is chosen by experience;
The radius in r----hole is got 2-15mm usually.
When implementing revolving bed mass transfer of the present invention with consersion unit, in the direct tube section bottom of described housing liquid outlet is set and is subjected to liquid bath, separate by dividing plate, be divided into and flow section and export and exported by liquid bath and adverse current section to be subjected to liquid bath; With and stream section and adverse current section liquid outlet be positioned at by the corresponding respectively liquid outlet of liquid bath to export to be subjected to liquid bath below.
When implementing revolving bed mass transfer of the present invention and consersion unit, between the end socket at equipment two ends and direct tube section, be provided with gas barrier; Between gas barrier and rotor, gas-tight sealing is set; The corresponding position of shared base plate of direct tube section and rotor is provided with and the section of stream and adverse current section liquid shading ring, makes two kinds of liquid can not mix in equipment.
When implementing revolving bed mass transfer of the present invention and consersion unit, described gas-tight sealing adopts one of following containment member: labyrinth seal, mechanical seal, pendular ring sealing, filler are contained sealing or float valve sealing.Its effect is to prevent that thereby the gas short circuit from reducing mass transfer and reaction effect.
When implementing revolving bed mass transfer of the present invention and consersion unit, filling porous aggregate in the described rotor; Described rotation mist eliminator is woven wire, foam metal, corrugated plating annular video disc or nonmetal porous material; Rotor, rotation mist eliminator and axle synchronous high-speed rotation under driven by motor.
When implementing revolving bed mass transfer of the present invention and consersion unit, mass transfer of the present invention and consersion unit are that horizontal structure is arranged.Two end sockets can be selected oval or plate shaped according to requirement of withstand voltage about this equipment; Direct tube section is divided into two sections, and one section is mass transfer or conversion zone; One section is the foam removal section; Housing is made up of spring bearing and sealing device with the sealing system of axle, plays and supports and seal two effects, can adopt magnetic force coupling, mechanical seal or packing seal according to used system to the requirement of sealing.
Hypergravity field swinging bed mass transfer of the present invention and consersion unit realize in a casing and stream and two kinds of modes of operation of adverse current simultaneously, can be widely used in the mass transfer and the course of reaction of the heterogeneous system of solution-air, gas-liquid-solid, solution-air-liquid.
Hypergravity field swinging bed mass transfer of the present invention and consersion unit have following beneficial effect:
1. hypergravity field swinging bed mass transfer of the present invention and consersion unit, in a table apparatus, be provided with two rotors, gas, liquid two-phase be also stream contact on rotor 8a, counter current contacting on rotor 8b is finished simultaneously in a rotating bed super gravity device and stream and two kinds of operating process of adverse current, thereby has been reduced equipment size, reduced intermediate line, reduce floor space, reduced energy consumption, reduced equipment investment.
2. the rotor 8a of hypergravity field swinging bed mass transfer of the present invention and consersion unit boosts to gas, gas produces pressure drop on rotor 8b, gas is basic identical at the voltage drop value that value of boosting on the rotor 8a and gas produce on rotor 8b, gas has only local resistance by the pressure drop of revolving bed equipment of the present invention like this, pressure drop obviously reduces, and makes equipment of the present invention more be applicable to the occasion that requires pressure drop little.
3. hypergravity field swinging bed mass transfer of the present invention and consersion unit are provided with gas foam removal section, because gas comes out to enter the foam removal section from the center of rotor 8b, the sectional area sudden enlargement, the gas prompt drop is low, the part droplet settling that gas is carried secretly gets off, raffinate foam that gas is carried secretly through being installed in rotor coaxial on efficient rotation demister, because the principle of efficient rotation demister of the present invention is to utilize centrifugal force to come foam removal, therefore specific efficiency is higher mutually with common static demister, the liquid foam of carrying secretly through the gas of efficient rotation demister of the present invention nearly all is removed, the gas that makes equipment of the present invention draw can directly enter subsequent processing, and does not influence the normal running of subsequent processing.
Description of drawings
Fig. 1 is the schematic diagram of hypergravity field swinging bed equipment of the present invention.
The specific embodiment
With regard to accompanying drawing the present invention is elaborated below.The parts that function is identical among the present invention are with identical Arabic numerals mark, and with a, b distinguishes it and flows section and adverse current section.
As shown in Figure 1: 1 for gas feed, and 2a be and a stream section liquid-inlet, and 2b is an adverse current section liquid-inlet, and 4a be and flow a section liquid distribution trough that 4b is an adverse current section liquid distribution trough; 5a is and stream section outlet liquid is subjected to liquid bath, and 5b is subjected to liquid bath for adverse current section outlet liquid; 6a is and stream section liquid outlet that 6b is an adverse current section liquid outlet; 7 is the rotary type efficient mist eliminator; 8a is and a stream section rotor, and 8b is an adverse current section rotor, and rotor is made up of two metal frames, is filled with porous aggregate 3a and 3b in the rotor; 9 is axle, 10 is the sealing system of housing and axle, and 11 is bearing or axle sleeve bracing frame, and direct tube section and the corresponding position of two rotor base plates are provided with and the section of stream and adverse current section liquid shading ring 13,14 is the gas inlet end end socket, 15 is motor, and 16 is direct tube section, and 17 are the foam removal section, two rotors and gas barrier 18a, movable sealing 12a between b, b can adopt float valve sealing, pendular ring sealing, packing seal, mechanical seal or labyrinth seal; 19a is and a stream section liquid-inlet is subjected to liquid bath, and 19b is that adverse current section liquid-inlet is subjected to liquid bath; 20 is gas vent; 21 is the gas outlet end end socket; 22 is the shared base plate of rotor; 23 is dividing plate.
On the gas inlet end end socket 14 of present device, gas feed 1 is set, and stream section liquid-inlet 2a; Gas vent 20 is set, adverse current section liquid-inlet 2b on gas outlet end end socket 21; In the housing of consersion unit, the position corresponding with liquid-inlet 2 is provided with liquid-inlet and is subjected to liquid bath 19 and liquid distribution trough 4, and liquid distribution trough is a circular straighttube, is drilled with two rounds on the pipe, and the radical of pipe and the number in hole are determined by the amount of liquid.
Be subjected to liquid bath 5a in a setting of direct tube section 16 bottoms of present device housing and a stream section liquid outlet, adverse current section liquid outlet is subjected to liquid bath 5b, is separated by dividing plate 23; And stream section outlet is subjected to be provided with on the liquid bath 5a and a stream section liquid outlet 6a, be subjected to be provided with on the liquid bath 5b adverse current section liquid outlet 6b in the outlet of adverse current section;
Between gas inlet end end socket 14 and direct tube section 16, be provided with and the section of stream gas barrier 18a, between gas outlet end end socket 21 and direct tube section 16, be provided with adverse current section gas barrier 18b; Also flowing section gas barrier 18a and also be provided with and the section of stream gas-tight sealing 12a between the stream section rotor 8a; Be provided with adverse current section gas-tight sealing 12b between adverse current section gas barrier 18b and adverse current section rotor 8b, wherein gas-tight sealing 12 adopts one of following containment member: labyrinth seal, mechanical seal, pendular ring sealing, filler are contained sealing or float valve sealing; Direct tube section 16 is provided with and the section of stream and adverse current section liquid shading ring 13 with shared base plate 22 corresponding positions.
Gas-liquid two-phase can be finished and stream and counter-current operation in high-gravity rotating bed mass transfer of the present invention and reaction unit simultaneously, specific operation process is as described below: gas is entered and the section of stream rotor packing layer 3a by a center of also flowing section rotor 8a by gas feed 1 access to plant, a section liquid-inlet 2a enters liquid and the section of stream liquid-inlet is subjected to liquid bath 19a by also flowing, by and a stream section liquid distribution trough 4a is sprayed at and the section of stream rotor packing layer 3a on, carry out with gas and spread being thrown out of packing layer after matter or the reaction in powerful centrifugal force field, liquid is entered by the constraint of housing and liquid stripper loop 13 and the section of stream liquid outlet is subjected to liquid bath 5a through liquid outlet 6a ejector.Gas enters packing layer 3b by the outer rim of adverse current section rotor 8b under the constraint of housing, liquid enters adverse current section liquid-inlet by adverse current section liquid-inlet 2b and is subjected to liquid bath 19b, be sprayed on the adverse current rotor packing layer 3b by adverse current section liquid distribution trough 4b, carry out being thrown out of packing layer after countercurrent mass transfer or the reaction with gas in powerful centrifugal force field, liquid is subjected to the constraint of housing and liquid stripper loop 13 to enter adverse current section liquid outlet to be subjected to liquid bath 5b through liquid outlet 6b ejector.Gas is drawn by the center of adverse current section rotor 8b and is entered foam removal section 17, passes rotary type efficient mist eliminator 7, by gas vent 20 ejectors.
Embodiment 1
Be applied to utilize ammonium sulfite to absorb sulfur dioxide in sulfuric acid plant's tail gas hypergravity field swinging bed mass transfer of the present invention and consersion unit.Principle is ammonium sulfite and SO
2Reaction back generates ammonium bisulfite, and ammonium bisulfite is a kind of better reductant, leaves system as product after ammonium bisulfite reaches certain concentration.The flow process of prior art is a two-phase method, adopts two operational towers to finish SO in one section tower unstripped gas
2Content higher, absorption liquid is that high concentration contains ammonium liquid, is equivalent to concentration tower, the unstripped gas of two sections towers is working off one's feeling vent one's spleen of one section tower, absorption liquid is that low concentration contains ammonium liquid, is equivalent to purifying column, middle SO works off one's feeling vent one's spleen
2Content requirement is less than 300ppm.SO in the second stage exit gas in the practical operation
2Content overproof surpasses 1000ppm sometimes.
Adopt the SO in the hypergravity whirligig processing tail gas of the present invention
2, replace one section tower (concentration tower) also to flow section, replace two sections towers (purifying column) with the adverse current section.Its operating parameter and result are as shown in table 1.
Table 1
| Tolerance (m 3/h) | Gas liquid ratio (m 3/m 3) | Inlet temperature | The import strength of fluid | Phase concentrations is analyzed | |||||
| And stream section | The adverse current section | Import | Outlet | ||||||
| Gas (℃) | Liquid (℃) | (NH 4) 2SO 3 (g/L) | NH 4HSO 3 (g/L) | (NH 4)2SO 3 (g/L) | NH 4HSO 3 (g/L) | (ppm) | (ppm) | ||
| 4000 | 811∶1 | 43 | 37.7 | 191.3 | 513.2 | 147.99 | 141.07 | 4800 | 27 |
| 1103∶1 | 42.1 | 37 | 180.5 | 518.4 | 155.86 | 134.35 | 5800 | 31 | |
Gas is 160mmH by the pressure drop of device of the present invention
2O.
Hypergravity swinging bed device and conventional tower technique device are handled 4000m
3Table 2 is listed in the technical data contrast of/h sulfuric acid plant tail gas.
From above-mentioned table 1,2 as can be seen, hypergravity field swinging bed device small investment of the present invention, floor space is little, the desulfurization index is good, power consumption is low.
The contrast of table 2 device of the present invention and prior art
| Conventional tower | Equipment of the present invention | |
| Handle tolerance | 4000m 3/h | 4000m 3/h |
| Cost of equipment | 700,000 yuan | 300,000 yuan |
| Take up an area of | 70m 3 | 30m 3 |
| Power | 30kW | 20kW |
| Import SO 2Concentration | 5000ppm | 5000ppm |
| Discharging tail gas concentration | ＜300ppm | ＜100ppm |
Claims (7)
1. hypergravity field swinging bed mass transfer and consersion unit comprise casing, rotor [8], rotation mist eliminator [7] and transmission device, and described casing comprises gas inlet end end socket [14], direct tube section [16] and gas outlet end end socket [21]; Described transmission device is made up of motor [15], axle [9], spring bearing [11] and sealing system [10]; It is characterized in that:
Described rotor [8] is a birotor, form by two metal frames with shared base plate [22], gas, liquid two-phase and a stream section rotor [8a] is gone up and the stream contact, go up counter current contacting at adverse current section rotor [8b]; Rotor [8] is fixed on the axle [9] by shared base plate [22];
Between gas inlet end end socket [14] and direct tube section [16], be provided with and the section of stream gas barrier [18a], between gas outlet end end socket [21] and direct tube section [16], be provided with adverse current section gas barrier [18b]; Between gas barrier [18] and rotor [8], gas-tight sealing [12] is set; Direct tube section [16] is provided with and the section of stream and adverse current section liquid shading ring [13] with the corresponding position of shared base plate [22].
2. revolving bed mass transfer according to claim 1 and consersion unit is characterized in that: described gas inlet end end socket [14] is provided with gas feed [1], and stream section liquid-inlet [2a]; Described gas outlet end end socket [21] is provided with gas vent [20], adverse current section liquid-inlet [2b]; In the casing of consersion unit, the position corresponding with liquid-inlet [2] is provided with liquid-inlet and is subjected to liquid bath [19] and liquid distribution trough [4].
3. revolving bed mass transfer according to claim 1 and consersion unit, it is characterized in that: in the bottom of described casing direct tube section [16] liquid outlet is set and is subjected to liquid bath [5], separate by dividing plate [23], be divided into and flow section outlet and exported by liquid bath [5a] and adverse current section to be subjected to liquid bath [5b]; Be subjected to liquid bath [5a] with liquid outlet, liquid outlet [6a], [6b] that [5b] is corresponding be positioned at outlet be subjected to liquid bath [5] below.
4. revolving bed mass transfer according to claim 1 and consersion unit is characterized in that: described gas-tight sealing [12] adopts one of following containment member: labyrinth seal, mechanical seal, pendular ring sealing, filler are contained sealing or float valve sealing.
5. according to described revolving bed mass transfer of one of claim 1-4 and consersion unit, it is characterized in that: filling porous aggregate [3] in the described rotor [8]; Described rotation mist eliminator [7] is woven wire, foam metal, corrugated plating annular video disc or nonmetal porous material; Rotor [8], rotation mist eliminator [7] and axle [9] synchronous high-speed rotation under motor [15] drives.
6. according to described revolving bed mass transfer of one of claim 1-4 and consersion unit, it is characterized in that: described mass transfer and consersion unit are that horizontal structure is arranged.
7. revolving bed mass transfer according to claim 1 and consersion unit is characterized in that:
Described gas inlet end end socket [14] is provided with gas feed [1], and stream section liquid-inlet [2a]; Described gas outlet end end socket [21] is provided with gas vent [20], adverse current section liquid-inlet [2b]; In the casing of consersion unit, the position corresponding with liquid-inlet [2] is provided with liquid-inlet and is subjected to liquid bath [19] and liquid distribution trough [4];
In direct tube section [16] bottom of described casing liquid outlet is set and is subjected to liquid bath [5], separate, be divided into and flow section outlet and exported by liquid bath [5a] and adverse current section to be subjected to liquid bath [5b] by dividing plate [23]; With liquid outlet be subjected to liquid bath [5a], liquid outlet [6a], [6b] that [5b] is corresponding be positioned at outlet be subjected to liquid bath [5] below;
Described gas-tight sealing [12] adopts one of following containment member: labyrinth seal, mechanical seal, pendular ring sealing, filler are contained sealing and float valve sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310103434 CN1247302C (en) | 2003-10-31 | 2003-10-31 | Ultragravity field rotary bed mass transfer and conversion unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310103434 CN1247302C (en) | 2003-10-31 | 2003-10-31 | Ultragravity field rotary bed mass transfer and conversion unit |
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| CN1611293A CN1611293A (en) | 2005-05-04 |
| CN1247302C true CN1247302C (en) | 2006-03-29 |
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| CN 200310103434 Expired - Lifetime CN1247302C (en) | 2003-10-31 | 2003-10-31 | Ultragravity field rotary bed mass transfer and conversion unit |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101037630B (en) * | 2007-04-24 | 2010-11-17 | 胜利油田胜利工程设计咨询有限责任公司 | Oil gas field natural gas high gravity desulfurization method |
| CN102649761B (en) * | 2011-02-25 | 2014-03-26 | 中国石油化工股份有限公司 | Method for preparing C1-C4 alkyl nitrous acid ester |
| CN102219693B (en) * | 2010-04-15 | 2013-12-04 | 中国石油化工股份有限公司 | Method for preparing alkyl nitrite |
| CN102218291B (en) * | 2010-04-15 | 2014-03-26 | 中国石油化工股份有限公司 | Chemical reaction method |
| CN102463075A (en) * | 2010-11-05 | 2012-05-23 | 北京化工大学 | Novel method for high-gravity reinforced conversion of coal-based chemical raw material |
| CN102649764B (en) * | 2011-02-25 | 2014-07-02 | 中国石油化工股份有限公司 | Method for preparing C1-C4 alkyl nitrous acid ester by catalytic reaction |
| CN102649762B (en) * | 2011-02-25 | 2014-03-26 | 中国石油化工股份有限公司 | Method for preparing C1-C4 alkyl nitrous acid ester through catalytic reaction |
| CN102649763B (en) * | 2011-02-25 | 2014-04-23 | 中国石油化工股份有限公司 | Method for preparing C1-C4 alkyl nitrous acid ester by catalytic reaction |
| CN105749821B (en) * | 2016-03-28 | 2018-04-20 | 太原科技大学 | One kind revolution rotation high gravity rotating packed bed |
| CN110292810B (en) * | 2019-08-09 | 2024-07-02 | 成都市珑熙科技有限公司 | Integrated supergravity separation device |
| CN111744415A (en) * | 2020-06-15 | 2020-10-09 | 成都兴鑫悦环保技术开发有限公司 | Hypergravity centrifuge |
| CN114230762A (en) * | 2021-12-31 | 2022-03-25 | 黄山联固新材料科技有限公司 | Waterborne polyurethane and continuous preparation process thereof |
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2003
- 2003-10-31 CN CN 200310103434 patent/CN1247302C/en not_active Expired - Lifetime
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