CN102407087B - Method using multi-tube segmental heat exchange type fluidized bed reactor - Google Patents
Method using multi-tube segmental heat exchange type fluidized bed reactor Download PDFInfo
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- CN102407087B CN102407087B CN 201110326445 CN201110326445A CN102407087B CN 102407087 B CN102407087 B CN 102407087B CN 201110326445 CN201110326445 CN 201110326445 CN 201110326445 A CN201110326445 A CN 201110326445A CN 102407087 B CN102407087 B CN 102407087B
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Abstract
The invention relates to a method using multi-tube segmental heat exchange type fluidized bed reactor. The reactor involved in the method is composed of three parts: a reactor expansion section, a reaction area and an air feeding cone. The reaction area adopts multi-segment and multi-tube heat exchanger, the material reaction is conducted inside the multi-tube, heat media is introduced into the shell pass of the multi-tube, and the reaction temperature of the material in the multi-tube of the reactor can be controlled by controlling the flow condition and the inlet and outlet temperature of the heat media. After the rector is segmented longitudinally, the reaction segments have different temperature distributions. According to the differences of the longitudinal reaction process, the temperature of the reaction area is controlled segmentally to maximize the efficiency of the reaction area and to control the consistence of the temperature distribution in the reaction area.
Description
Technical field
The present invention relates to a kind of method of using multiple row pipe segmentation heat exchange type fluidized-bed reactor.
Background technology
Most of chemical reactions all carry out at non-thermodynamics standard conditions, and are attended by fuel factor, for example: under middle hot conditions, with a large amount of heat releases, the reaction of polysilicon and chloromethanes, its reaction temperature are between 250-350, and process is imitated heat and is-the 2320KJ/kg product.
Fluid bed then is in the chemical reaction, particularly in multiphase gas-solid reaction, and a kind of reactor pattern of often being selected for use targetedly.
The maximization of reactor then is a main trend of modern chemical industry, thereby improves usefulness and the economy of reactor.
Can effectively control this large-scale reactor, then be the prerequisite of reaching this task object.
The general large-scale fluidized bed mode of inserting dactylethrae (heat exchanger tube) in reactor commonly used imports hot media therein, imports or derive reaction heat, to reach the purpose of control reaction zone temperature.The not necessarily best distribution mode but such reaction temperature district distributes is especially under the mode of large-scale reactor.
At the problem of present existence, the invention provides a kind of method of using multiple row pipe segmentation heat exchange type fluidized-bed reactor.
Summary of the invention
The objective of the invention is to, a kind of method of using multiple row pipe segmentation heat exchange type fluidized-bed reactor is provided, reactor related in this method is made up of reactor expanding reach, reaction zone and gas feed cone three parts, in reaction zone, adopt the form of multistage and multiple row heat exchange of heat pipe, reaction mass carries out in the pipe of multiple row pipe, shell side at the multiple row pipe then imports hot media, and the regulation and control of the flow regime by hot media and the out temperature of hot media reach the purpose of the reaction temperature of the material in the control reactor multiple row pipe.Behind the longitudinal divisions, Temperature Distribution is variant between the conversion zone in reactor, and according to the difference of vertical reaction process, segmentation regulation and control reaction zone temperature makes the reaction zone realizes maximal efficiency, regulates and control the reaction zone temperature Uniformity of Distribution equally.
A kind of method of using multiple row pipe segmentation heat exchange type fluidized-bed reactor of the present invention, reactor related in this method is made up of reactor expanding reach, reaction zone and gas feed cone three parts, and concrete operations follow these steps to carry out:
A, reactant solid, powdery material is entered by solid powder import (8), inlet amount by level gauging device (7) control solid, powdery material, gas material enters inside reactor by (5) gas reactant import after distributor (4) disperses, the product that the reaction back generates is gaseous state in reactor, after separating dust by micro mist dirt separator (9) again, locate to discharge through tail gas outlet (6);
B, the material that has neither part nor lot in reaction will be located to assemble to reactor lower part gas feed cone (3), finally by being discharged by tailings outlet (13);
C, in reactor, gas material and solid material mainly react in the vertical tubulation of reactor (14), also respond between each section section crack and carrying out, reaction has fuel factor in carrying out, introduced by the shell side hot media import (10) of reactor (2) by the hot media of setting flow and temperature, after heat exchange, discharge through shell side hot media outlet (11) again;
D, the hot media operating mode that enters the reactor shell side are set via temperature of reactor sensor (12), and setting content is the hot media flow and enters temperature what hot media import (10) was located.
The reactor that relates in the described method is provided with solid powder import (8) on the top of reactor expanding reach (1), and thing location probe (7) is fixedly arranged, and the side in reactor expanding reach (1) fixedly has micro mist dirt separator (9); The two ends of the tubulation (14) in the reaction zone (2) are separately fixed on the tube sheet (15), and the fixedly deflection plate (16) that misplaces up and down at the middle part of tubulation (14); The middle part stationary annular tubular gas feed distributor (4) of gas feed cone (3), the bottom of gas feed cone (3) are tailings outlet (13).
Tubulation (14) in the reaction zone (2) is arranged as equilateral triangle or square profile.
Lower end in reaction zone (2) shell side one side is provided with hot media import (10), and the upper end of opposite side is provided with hot media outlet (11).
Be respectively equipped with temperature sensor (12) in the upper, middle and lower of reaction zone (2).
The method of use multiple row pipe segmentation heat exchange type fluidized-bed reactor of the present invention, reactor related in this method is assembled by the similar multistage heat exchanging segment of structure function, each section has independently temperature control system, controlling whole bed respectively according to reaction characteristics, to be in optimum temperature Guaranteed, eliminated the thermograde of vial heat exchange structure, made the reaction temperature parameter be easy to control; At the top of reactor upper extension section the thing location probe is set, accurately the height of assaying reaction device bed material is in time understood the material balance state of course of reaction, and adds material and the catalyst of loss, makes the reactiveness optimization; A gas distribution endless tube is settled at taper position at reactor lower part, offer annular space formula qi-emitting hole along the bottom in one week of gas distribution endless tube, make the distribution of gaseous phase materials in reactor more even, because itself having, the multiple row area under control forces to distribute and the characteristic of shunting, be difficult for stifled, make the fluidisation attitude of reaction bed stable more and even, reaction system is more stable.
Description of drawings
Fig. 1 is structural representation of the present invention
The specific embodiment
Embodiment
A kind of method of using multiple row pipe segmentation heat exchange type fluidized-bed reactor of the present invention, reactor related in this method is made up of reactor expanding reach, reaction zone and gas feed cone three parts, be provided with solid powder import 8 on the top of reactor expanding reach 1, and thing location probe 7 is fixedly arranged, the side in reactor expanding reach 1 fixedly has micro mist dirt separator 9; The two ends of the tubulation 14 in the reaction zone 2 are separately fixed on the tube sheet 15, tubulation 14 is arranged as equilateral triangle or square profile, and the fixedly deflection plate 16 that misplaces up and down at the middle part of tubulation 14, the lower end of reaction zone 2 shell sides one side is provided with hot media import 10, the upper end of opposite side is provided with hot media outlet 11, and the upper, middle and lower of reaction zone 2 is respectively equipped with temperature sensor 12; The middle part stationary annular tubular gas feed distributor 4 of gas feed cone 3, the bottom of gas feed cone 3 are tailings outlet 13;
At the top of reactor, be designed to an expanding reach, it is many that the space is big, and the thing location probe 7 of setting with observing and controlling reaction bed feed state, is controlled the adding of reaction solid material, can lay molecule simultaneously and filter or separator;
At the reactor middle part, be designed to the multistage tubular reaction district 2 of multistage N=1-69 (N is hop count), tubulation 14 each sections in this reaction zone 2 are isometric formula structure, or according to vertical reaction process characteristic distributions, be designed to unequal length section form, and be N*H5=H4 or ∑ Ni=H1 (N=1-6 here), hop count can be decided intersegmental the getting of 2-10, length can be got fixed in the scope of 1000-2000mm, the inner array length of tube is less than the segment length, it is fixed that the shell side external diameter can be got in the 100-5000mm scope, respective upper expanding reach 1 external diameter is big slightly, internal diameter can be got fixed in the scope of 150-5500mm, tubulation 14 is arranged as equilateral triangle or square profile, by hot media in shell flow and Controllable Temperature to reach in the reaction tube humidity province controlled, especially at the segmental structure of large-scale reactor, the making of giving reactor, transportation and installation bring many convenience;
At reactor lower part, be designed to taper, because itself having, multiple row pipe 14 districts force to distribute and the characteristic of shunting, in this section, only settle an annular tube shaped gas feed distributor 4, this distributor 4 can be according to the size of reactor inside diameter, be designed to ring or a polycycle, continuous annular space form is made in the ring pipe bottom, these distributor 4 bottoms are annular space charging distribution mouth, and the more anti-obstruction of cellular type distributor with traditional also is beneficial to cleaning, this annular space slit-widths is that 0.5-2.0mm is good, and concrete operations follow these steps to carry out:
A, reactant solid, powdery material is entered by solid powder import 8, inlet amount by level gauging device 7 control solid, powdery materials, gas material enters inside reactor by 5 gas reactant imports after distributor 4 disperses, the product that the reaction back generates is gaseous state in reactor, after separating dust by micro mist dirt separator 9 again, export 6 places through tailings and discharge;
B, the material that has neither part nor lot in reaction will be assembled to reactor lower part gas feed centrum 3 places, finally by being discharged by tailings outlet 13;
C, in reactor, gas material and solid material mainly react in the vertical tubulation 14 of reactor, also respond between each section section crack and carrying out, reaction has fuel factor in carrying out, introduced by the shell side hot media import 10 of reactor 2 by the hot media of setting, after heat exchange, export 11 through the shell side hot media again) discharge;
D, the hot media operating mode that enters the reactor shell side are set via temperature of reactor sensor 12, and setting content is hot media flow and in the temperature that enters at hot media import 10 places, and this reactor pressure is controlled by other Special Equipment.
Adopt fluidized-bed reactor of the present invention, can carry out multistage temperature control to fluidized-bed reaction, to promote reactor efficiency, the thing location probe can be controlled the addition of solid material, is easy to realize industrial amplification requirement.
Claims (5)
1. method of using multiple row pipe segmentation heat exchange type fluidized-bed reactor is characterized in that reactor related in this method is made up of reactor expanding reach, reaction zone and gas feed cone three parts, and concrete operations follow these steps to carry out:
A, reactant solid, powdery material is entered by solid powder import (8), inlet amount by level gauging device (7) control solid, powdery material, gas material enters inside reactor by the gas reactant import after distributor (4) disperses, the product that the reaction back generates is gaseous state in reactor, after separating dust by micro mist dirt separator (9) again, locate to discharge through tail gas outlet (6);
B, the material that has neither part nor lot in reaction will be located to assemble to reactor lower part charging cone (3), finally by being discharged by tailings outlet (13);
C, in reactor, gas material and solid material mainly react in the vertical tubulation of reactor (14), also respond between each section section crack and carrying out, reaction has thermal response in carrying out, introduced by the shell side hot media import (10) of reactor by the hot media of setting flow and temperature, after heat exchange, discharge through shell side hot media outlet (11) again;
D, the hot media operating mode that enters the reactor shell side are set via temperature of reactor sensor (12), and setting content is the hot media flow and enters temperature what hot media import (10) was located.
2. according to the reactor that relates in the described method of claim 1, it is characterized in that being provided with solid powder import (8) on the top of reactor expanding reach (1), and thing location probe (7) is fixedly arranged, the side in reactor expanding reach (1) fixedly has micro mist dirt separator (9); The two ends of the tubulation (14) in the reaction zone (2) are separately fixed on the tube sheet (15), and the fixedly deflection plate (16) that misplaces up and down at the middle part of tubulation (14); The middle part stationary annular tubular gas feed distributor (4) of gas feed centrum (3), the bottom of charging centrum (3) are tailings outlet (13).
3. reactor according to claim 2 is characterized in that the tubulation (14) in the reaction zone (2) is arranged as equilateral triangle or square profile.
4. reactor according to claim 3 is characterized in that being provided with hot media import (10) in the lower end of reaction zone (2) shell side one side, and the upper end of opposite side is provided with hot media outlet (11).
5. reactor according to claim 4 is characterized in that being respectively equipped with temperature sensor (12) in the upper, middle and lower of reaction zone (2).
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2287518Y (en) * | 1997-01-03 | 1998-08-12 | 清华大学 | Gas-solid-solid external circulation fluidizing reactor for catalytic reaction system |
| CN101804314A (en) * | 2010-05-12 | 2010-08-18 | 新奥新能(北京)科技有限公司 | Fluidized bed reactor |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2287518Y (en) * | 1997-01-03 | 1998-08-12 | 清华大学 | Gas-solid-solid external circulation fluidizing reactor for catalytic reaction system |
| CN101804314A (en) * | 2010-05-12 | 2010-08-18 | 新奥新能(北京)科技有限公司 | Fluidized bed reactor |
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Denomination of invention: Method using multi-tube segmental heat exchange type fluidized bed reactor Effective date of registration: 20181108 Granted publication date: 20130918 Pledgee: Industrial Bank Co., Ltd. Urumqi Branch Pledgor: Kuytun Xilong Nonwoven Geotextile Product Co.,Ltd. Registration number: 2018650000007 |
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