CN1593740A - Highly effective slurry phase bed reactor - Google Patents

Highly effective slurry phase bed reactor Download PDF

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Publication number
CN1593740A
CN1593740A CN 200410012366 CN200410012366A CN1593740A CN 1593740 A CN1593740 A CN 1593740A CN 200410012366 CN200410012366 CN 200410012366 CN 200410012366 A CN200410012366 A CN 200410012366A CN 1593740 A CN1593740 A CN 1593740A
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Prior art keywords
reactor
gas
catalyst
nozzle
bed
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CN 200410012366
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Chinese (zh)
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CN1283349C (en
Inventor
谢克昌
姜少华
黄伟
田原宇
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Taiyuan University of Technology
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Taiyuan University of Technology
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Priority to CN 200410012366 priority Critical patent/CN1283349C/en
Publication of CN1593740A publication Critical patent/CN1593740A/en
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Publication of CN1283349C publication Critical patent/CN1283349C/en
Expired - Fee Related legal-status Critical Current
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Abstract

The invention relates to a kind of efficient reactor with paddle bed, which belongs to the chemical machinery field. It is composed mainly with the solid and liquid separator, the inner tube that the track is changeable, the reactor cover, the heat exchanger with an internal component, the riser with the spray nozzle, the inner-tube tank that has the heating and gas distribution function, the spray nozzle for protecting from choking, the mounting plate of the spray nozzle, the heat exchanger, the outlet of the heating coil, the quadratic distribution plate, the heating coil and so on. The beneficial effictiveness of the invention can be described as follows: the reactor and the distributor can't block up easily; the gas and the liquid can be mixed evenly; the reactive efficiency is high; the carrying amount of the catalyst and the solvent is so bit that it can not occur the bias current, channeling and dead bed; the size running quickly, and the viscosity of the size in the reactor is identical generally; the reactor can be shifted out in time, and especially in the stage of the catalytic, reducing and intensifying, it can realize to operate the reactor steadily; otherwise, the distribution of the virgin gas in the reactor along the axle is in agreement on the concentration of the catalyst, so that can make the catalyst have the most activity, and then it can be make the full use of the reactor space.

Description

Efficient reactor with paddle bed
One, technical field
The present invention relates to a kind of paste state bed reactor that is suitable for producing chemicals such as dimethyl ether and methyl alcohol, belong to chemical machinery field.
Two, background technology
Paste state bed reactor is a kind of novel chemical reaction device, the power source that it utilizes unstripped gas to mix as reaction, with the atent solvent is carrier, the catalyst dispersion suspension is reacted in solvent, the consersion unit of this kind pattern is not owing to there is mechanical agitation, thereby can not have to leak under HTHP and move.Because adopt the carrier of atent solvent as dispersed catalyst, thermal capacitance is big, help reaction temperature steadily because the strong disturbance effect of gas in bed arranged, thereby reaction heat can in time shift out, and avoids occurring the bed focus, prolongs life of catalyst.Existing paste state bed reactor causes bias current, channel even the dead bed of reaction bed because the restriction of distributor is often stopped up.In addition, because bed structure is unreasonable, bed bottom solvent reduces with the operation of reactor, also easily causes the reactor bottom slurry viscosity excessive, forms bias current, channel and even dead bed.Also have, because project organization is unreasonable, a large amount of catalyst and solvent are carried to the outside of reactor by gas, influence the operation and the production of reactor greatly.
Because slurry attitude bed adopts gas to carry out the stirring and the mixing of material, so the quality of the distribution of gas is directly connected to the success or failure of bed.Before slurry attitude bed goes into operation, need to carry out the filling of catalyst,, often cause the obstruction of bottom distribution device in gas-fluid, influence the operation of bed because viscosity is bigger at low temperatures after catalyst and the solvent; When catalyst reduction owing to can not carry out indirect to bed, adding heat mainly is the heat that is carried by the high-temperature gas that the bed bottom constantly is blown into, make the solvent loss of reactor bottom cause the viscosity of slurry attitude to increase like this, the gas distribution elements of device bottom of also inducing reaction is easily stopped up, and, cause carrying in a large number of catalyst and solvent because the gas volume of turnover reactor changes not quite; When producing, also can make the viscosity of bed slurries change the obstruction that causes gas distribution elements, cause starching the bias current and even the channel of attitude bed bed owing to the bed operation is unstable, even dead bed.In addition, traditional slurry attitude bed can not be realized the interior circulation of an interior slurries, and concentration of slurry and viscosity profile are inhomogeneous in the bed, and gas holdup is low, and gas-liquid-solid contact is insufficient, thereby the efficient and the conversion ratio of reaction are lower.
The attitude bed is closely-related to be on the other hand with starching, because the design of tradition slurry attitude bed does not consider that unstripped gas is in the axial distribution of reactor, cause unstripped gas concentration to reduce gradually vertically, and catalyst concentration axially reduces little along reactor, catalyst does not just make full use of like this, therefore be necessary very much the distribution of concentration in reactor of unstripped gas adjusted, make it and the catalyst concentration coupling, give full play to the effect of catalyst.Because reactor is integrated design, the gas that arrives top routinely must be through the bottom of reactor, yet the gas through reactor bottom is wanted and catalyst reaction certainly, therefore the concentration of fresh feed gas also can reduce, like this can be lower with the unstripped gas concentration of catalyst reaction, therefore the utilization rate of reactor top catalyst is lower, for whole reactor, has reduced the utilization rate of the reaction efficiency and the reactor of reactor.
Three, summary of the invention
The object of the invention is to overcome that existing paste state bed reactor catalyst and solvent carry and be prone to bias current, channel and dead bed in a large number and the improper running that causes reactor.The invention provides a kind of paste state bed reactor, this reactor distributor is difficult for stopping up, the amount of carrying of catalyst and solvent is very little, be not prone to bias current, channel and dead bed, the viscosity basically identical of slurries in the reactor, reaction heat can in time shift out, especially in the quiet run of easy realization response device of catalyst reduction temperature rise period.
Be the utilization rate of raising catalyst in reactor and the space utilization efficient of reactor, the invention provides a kind of scheme that increases reactor middle and upper part unstripped gas concentration, make the concentration of unstripped gas axially relatively more even at reactor, with the comparison match that concerns of catalyst concn, the high efficiency utilization of realization response device and catalyst.
Efficient reactor with paddle bed of the present invention, it is characterized in that it being by solid-liquid separator 2, cover 3 in the reducing, reactor jacket 4, the heat exchanger 5 of band inner member, the riser 6 of band nozzle, inner sleeve 7 with heating and distribution of gas effect, anti-blocking nozzle 8, the nozzle installing plate 9 of head type structure and quadratic distribution plate 13 constitute, the inner member of the interior circulation that realizes slurries is set in this reactor, comprises reducing sleeve 3, inner sleeve 7 with heating and distribution of gas effect, the nozzle installing plate 9 of head type structure, make gas along the axial equally distributed riser 6 of reactor, secondary air distribution grid 13 and the solid-liquid separator 2 of realizing the quadratic distribution of gas constitute.
Above-mentioned efficient reactor with paddle bed is characterized in that described anti-blocking nozzle 8 outlets have a ball body that prevents that slurries from flowing backwards, and its diameter is 1.1~1.3 times of nozzle trunnion.
Above-mentioned efficient reactor with paddle bed is characterized in that the nozzle installing plate 9 of its described head type structure is tangent with reactor wall, forms a smooth slurry reflux passage with the reactor outer wall.
Above-mentioned efficient reactor with paddle bed is characterized in that its described inner member sleeve 7 with heat effect is to be formed by the coil pipe coiling, and the distance between the coil pipe changes to the coil pipe caliber from zero from bottom to top.
Above-mentioned efficient reactor with paddle bed, a tube diameter that it is characterized in that the heat exchanger 5 of cover 3 in its described reducing, band inner member and have an inner member inner sleeve 7 of heat effect changes to 0.8~1 times of reactor diameter from 0.4~0.6 times of reactor diameter from the bottom to top.
Above-mentioned efficient reactor with paddle bed is characterized in that the inside that its described riser 6 is mounted in reactor directly links to each other with unstripped gas inlet 15, and the top has side opening, and its side opening aperture is consistent with the side opening aperture of anti-blocking nozzle 8.
Above-mentioned efficient reactor with paddle bed is characterized in that its described gas quadratic distribution plate 13 is positioned at the middle part of reactor.
The invention has the beneficial effects as follows, the reactor distributor is difficult for stopping up, gas-liquid mixed is even, the gas-solid full contact, the reaction efficiency height, the amount of carrying of catalyst and solvent is very little, be not prone to bias current, channel and dead bed, the slurries flowing velocity is fast, the viscosity basically identical of slurries in the reactor, reaction heat can in time shift out, especially in the quiet run of easy realization response device of catalyst reduction temperature rise period, in addition, unstripped gas vertically distribution and catalyst concn basically identical in reactor, making the maximum reactivity of catalyst performance, is fully used in the space of reactor.
Four, description of drawings
Fig. 1 is the internal structure profile diagram of efficient reactor with paddle bed, 1-product gas outlet, 2-solid-liquid separator, cover in the 3-reducing, 4-reactor jacket, the heat exchanger of 5-band inner member, the riser of 6-band nozzle, 7-has the inner sleeve of heating and distribution of gas effect, the anti-blocking nozzle of 8-, the nozzle installing plate of 9-head type structure, 10-heat exchanger entrance, 11-heat exchanger exit, the outlet of 12-heat(ing) coil, 13-quadratic distribution plate, 14-heat(ing) coil inlet, 15-unstripped gas inlet.
Five, the specific embodiment
Embodiment one:
Efficient reactor with paddle bed of the present invention, by solid-liquid separator 2, cover 3 in the reducing, reactor jacket 4, the heat exchanger 5 of band inner member, the riser 6 of band nozzle, inner sleeve 7 with heating and distribution of gas effect, anti-blocking nozzle 8, the nozzle installing plate 9 of head type structure and quadratic distribution plate 13 constitute, the inner member of the interior circulation that realizes slurries is set in this reactor, comprises reducing sleeve 3, inner sleeve 7 with heating and distribution of gas effect, the nozzle installing plate 9 of head type structure, make gas along the axial equally distributed riser 6 of reactor, secondary air distribution grid 13 and the solid-liquid separator 2 of realizing the quadratic distribution of gas constitute.Anti-blocking nozzle 8 outlets have a ball body that prevents that slurries from flowing backwards, and its diameter is 1.1 times of nozzle trunnion.The nozzle installing plate 9 of head type structure is tangent with reactor wall, forms a smooth slurry reflux passage with the reactor outer wall.Inner member sleeve 7 with heat effect is to be formed by the coil pipe coiling, and the distance between the coil pipe changes to the coil pipe caliber from zero from bottom to top.The heat exchanger 5 of cover 3, band inner member and a tube diameter with inner member inner sleeve 7 of heat effect change to 0.8 times of reactor diameter from 0.4 times of reactor diameter from the bottom to top in the reducing.The inside that riser 6 is mounted in reactor directly links to each other with unstripped gas inlet 15, and top has side opening, and its side opening aperture is consistent with the side opening aperture of anti-blocking nozzle 8.Gas quadratic distribution plate 13 is positioned at the middle part of reactor.
After gas enters bed by anti-blocking nozzle 8, part gas reacts at the bottom and the catalyst of reactor, reacted gas distributes once more through the secondary air distribution grid 13 that is located in the inner sleeve in uphill process, bubble diameter diminishes, reaction contact area increases, become comparatively fierce through the gas post-reactor middle and lower part catalytic reaction that distributes once more, partial raw gas is by reaction consumes, because synthetic reaction is the reaction that a molecular number reduces, so the gas volume that rises reduces, the concentration that arrives the unstripped gas of reactor middle and upper part reduces.Because the induced effect of gas flow rate, slurries in the bed carry out violent mixing, when gas continues to rise, gas flow rate reduces, catalyst with contact the back with reactor jacket tube 4 after solvent is carried to top and flow downward along wall, Di Bu catalyst slurry has just obtained replenishing timely like this, and concentration of slurry and viscosity in the bed are consistent substantially.When gas flow rate is big, part catalyst and solvent are taken to the top of reactor by gas, arrive the reducing inner sleeve 3 on top through heat exchanger 5 backs, same gas flow velocity behind reducing continues to reduce, catalyst and solvent flow downward along reactor wall once more, replenish lower catalytic agent and solvent, circulation in whole reactor inner catalyst and solvent just can be realized like this, concentration of slurry and viscosity just can be consistent substantially.When gas flow rate continues to increase, after still can not get separating behind the reducing inner sleeve 3 on part catalyst and solvent process reactor top, will enter the solid-liquid separator 2 on reactor top, through behind the solid-liquid separator 2, catalyst and solvent can flow back to reactor.Another part gas that is risen by reactor bottom passes through the middle part that riser 6 arrives reactors, because a series of apertures have been opened in the side, top of riser, gas is becoming tiny bubble after small holes, it is big that the gas holdup of the middle part fresh feed gas of feasible reaction becomes, replenished because reducing of bottom reactor feed gas concentration makes catalyst concn and unstripped gas concentration coupling.Because gas transverse and catalyst slurry carry out solid mass-transferring and reaction, the utilization rate of middle part catalyst and the utilization rate of space reactor have so just been improved simultaneously.
Embodiment two:
Efficient reactor with paddle bed of the present invention, anti-blocking nozzle 8 outlets have a ball body that prevents that slurries from flowing backwards, and its diameter is 1.2 times of nozzle trunnion.The nozzle installing plate 9 of head type structure is tangent with reactor wall, forms a smooth slurry reflux passage with the reactor outer wall.Inner member sleeve 7 with heat effect is to be formed by the coil pipe coiling, and the distance between the coil pipe changes to the coil pipe caliber from zero from bottom to top.The heat exchanger 5 of cover 3, band inner member and a tube diameter with inner member inner sleeve 7 of heat effect change to 0.9 times of reactor diameter from 0.5 times of reactor diameter from the bottom to top in the reducing.The inside that riser 6 is mounted in reactor directly links to each other with unstripped gas inlet 15, and top has side opening, and its side opening aperture is consistent with the side opening aperture of anti-blocking nozzle 8.Gas quadratic distribution plate 13 is positioned at the middle part of reactor.
When carrying out the reduction of catalyst, because the gas flow of turnover reactor differs less, the interior gas flow rate of reactor changes less, is easy to form carrying of catalyst and solvent.The bed heating is that the reducing gases that is blown into by the bottom provides in addition, and a large amount of high temperature reduction gas enter reactor bottom the bottom slurries are blown strongly, cause the bottom slurry viscosity excessive, form bias current and dead bed easily.This reactor is owing to have inner sleeve variable-diameter structure and top solid-liquid separator, gas flow rate has a distribution on bed is axial, avoid carrying of catalyst and solvent, make catalyst and solvent form interior circulation, keep the slurry viscosity unanimity in the reactor at inside reactor.Because the nozzle installing plate of reactor bottom adopts the head type structure, can not form the dead band when catalyst slurry flows to reactor bottom downwards in addition, catalyst slurry refluxes smooth, in time the solvent and the catalyst of post-reactor bottom.In addition, because the reactor bottom inner sleeve is to be formed by the coil pipe coiling, therefore also can feed high-temperature gas in the coil pipe bed is carried out indirect, avoid utilizing the raising gas flow to remedy carrying in a large number owing to not enough catalyst that causes of bed heating and solvent.Simultaneously, because the reducing gases that enters from reactor bottom is at first reacted with the catalyst of reactor bottom, make the density of hydrogen in the reducing gases reduce, therefore be necessary the top density of hydrogen is replenished, then can realize by the middle part that riser arrives reactor by another part gas that reactor bottom rises, because the upper side of riser has been opened a series of apertures, gas is becoming tiny bubble after small holes, it is big that the gas holdup of the fresh reducing gases in middle part of feasible reaction becomes, replenished because reducing of bottom reaction density of hydrogen makes catalyst concn and density of hydrogen coupling.Because gas transverse and catalyst slurry carry out solid mass-transferring and reaction, so just improved the utilization rate of middle part catalyst and the utilization rate of space reactor simultaneously, made catalyst reduction more all even fully, for reaction lays a good foundation.
Embodiment three:
Efficient reactor with paddle bed of the present invention, anti-blocking nozzle 8 outlets have a ball body that prevents that slurries from flowing backwards, and its diameter is 1.3 times of nozzle trunnion.The nozzle installing plate 9 of head type structure is tangent with reactor wall, forms a smooth slurry reflux passage with the reactor outer wall.Inner member sleeve 7 with heat effect is to be formed by the coil pipe coiling, and the distance between the coil pipe changes to the coil pipe caliber from zero from bottom to top.The heat exchanger 5 of cover 3, band inner member and a tube diameter with inner member inner sleeve 7 of heat effect change to 1 times of reactor diameter from 0.6 times of reactor diameter from the bottom to top in the reducing.The inside that riser 6 is mounted in reactor directly links to each other with unstripped gas inlet 15, and top has side opening, and its side opening aperture is consistent with the side opening aperture of anti-blocking nozzle 8.Gas quadratic distribution plate 13 is positioned at the middle part of reactor.Other structure is identical with embodiment one.

Claims (7)

1. efficient reactor with paddle bed, it is characterized in that it being by solid-liquid separator (2), cover (3) in the reducing, reactor jacket (4), the heat exchanger (5) of band inner member, the riser (6) of band nozzle, inner sleeve (7) with heating and distribution of gas effect, anti-blocking nozzle (8), the nozzle installing plate (9) of head type structure and quadratic distribution plate (13) constitute, the inner member of the interior circulation that realizes slurries is set in this reactor, comprises reducing sleeve (3), inner sleeve (7) with heating and distribution of gas effect, the nozzle installing plate (9) of head type structure, make gas along the axial equally distributed riser of reactor (6), realize the secondary air distribution grid (13) and the solid-liquid separator (2) of the quadratic distribution of gas.
2. efficient reactor with paddle bed according to claim 1 is characterized in that described anti-blocking nozzle (8) outlet has a ball body that prevents that slurries from flowing backwards, and its diameter is 1.1~1.3 times of nozzle trunnion.
3. efficient reactor with paddle bed according to claim 1 is characterized in that the nozzle installing plate (9) of its described head type structure and reactor wall are tangent, forms a smooth slurry reflux passage with the reactor outer wall.
4. efficient reactor with paddle bed according to claim 1 is characterized in that its described inner member sleeve (7) with heat effect is to be formed by the coil pipe coiling, and the distance between the coil pipe changes to the coil pipe caliber from zero from bottom to top.
5. efficient reactor with paddle bed according to claim 1 is characterized in that the interior tube diameter times reactor diameter variation from 0.4~0.6 times of reactor diameter to 0.8~1 of overlapping the heat exchanger (5) of (3), band inner member and having the inner member inner sleeve (7) of heat effect of its described reducing.
6. efficient reactor with paddle bed according to claim 1, it is characterized in that inside that its described riser (6) is mounted in reactor directly with unstripped gas enter the mouth (15) link to each other, the top has side opening, and its side opening aperture is consistent with the side opening aperture of anti-blocking nozzle (8).
7. efficient reactor with paddle bed according to claim 1 is characterized in that its described gas quadratic distribution plate (13) is positioned at the middle part of reactor.
CN 200410012366 2004-06-25 2004-06-25 Highly effective slurry phase bed reactor Expired - Fee Related CN1283349C (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101979475A (en) * 2010-10-26 2011-02-23 太原理工大学 Process for synthesizing natural gas by performing methanation on coke oven gas
CN101979476A (en) * 2010-10-26 2011-02-23 赛鼎工程有限公司 Process for synthesizing natural gas by methanation of coal synthesis gas
CN102416307A (en) * 2010-09-27 2012-04-18 中国石油化工股份有限公司 Internal recycling slurry bed reactor and application thereof
CN103962067A (en) * 2013-01-31 2014-08-06 中国科学院上海高等研究院 Method for carrying out slurry bed reaction
CN103962069A (en) * 2013-01-31 2014-08-06 中国科学院上海高等研究院 Slurry bed reactor
CN103977746A (en) * 2013-02-08 2014-08-13 上海碧科清洁能源技术有限公司 Slurry bed reactor and method for using thereof
CN104923132A (en) * 2015-05-05 2015-09-23 中国石油大学(华东) Circulation flow reactor for gas-liquid feeding control internal recycle slurry bed
CN107126910A (en) * 2017-03-27 2017-09-05 五邑大学 A kind of novel pulpous bed reactor
CN107175050A (en) * 2017-03-27 2017-09-19 五邑大学 A kind of efficient heterophase reactor
CN107254327A (en) * 2017-06-05 2017-10-17 中石化宁波工程有限公司 Fischer-Tropsch synthesis oil process system
CN109317058A (en) * 2018-10-19 2019-02-12 江门市崖门新财富环保工业有限公司 A kind of nozzle of novel pulpous bed gas reactor distributor

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102416307A (en) * 2010-09-27 2012-04-18 中国石油化工股份有限公司 Internal recycling slurry bed reactor and application thereof
CN101979476A (en) * 2010-10-26 2011-02-23 赛鼎工程有限公司 Process for synthesizing natural gas by methanation of coal synthesis gas
CN101979475B (en) * 2010-10-26 2013-05-29 太原理工大学 Process for synthesizing natural gas by performing methanation on coke oven gas
CN101979476B (en) * 2010-10-26 2013-05-29 赛鼎工程有限公司 Process for synthesizing natural gas by methanation of coal synthesis gas
CN101979475A (en) * 2010-10-26 2011-02-23 太原理工大学 Process for synthesizing natural gas by performing methanation on coke oven gas
CN103962069B (en) * 2013-01-31 2017-03-08 中国科学院上海高等研究院 A kind of paste state bed reactor
CN103962067A (en) * 2013-01-31 2014-08-06 中国科学院上海高等研究院 Method for carrying out slurry bed reaction
CN103962069A (en) * 2013-01-31 2014-08-06 中国科学院上海高等研究院 Slurry bed reactor
CN103962067B (en) * 2013-01-31 2017-02-08 中国科学院上海高等研究院 Method for carrying out slurry bed reaction
CN103977746A (en) * 2013-02-08 2014-08-13 上海碧科清洁能源技术有限公司 Slurry bed reactor and method for using thereof
CN104923132A (en) * 2015-05-05 2015-09-23 中国石油大学(华东) Circulation flow reactor for gas-liquid feeding control internal recycle slurry bed
CN104923132B (en) * 2015-05-05 2017-11-28 中国石油大学(华东) Circulating Slurry Reactor circulation flow reactor in a kind of gas-liquid charging
CN107126910A (en) * 2017-03-27 2017-09-05 五邑大学 A kind of novel pulpous bed reactor
CN107175050A (en) * 2017-03-27 2017-09-19 五邑大学 A kind of efficient heterophase reactor
CN107254327A (en) * 2017-06-05 2017-10-17 中石化宁波工程有限公司 Fischer-Tropsch synthesis oil process system
CN107254327B (en) * 2017-06-05 2021-12-17 中石化宁波工程有限公司 Fischer-Tropsch synthetic oil process
CN109317058A (en) * 2018-10-19 2019-02-12 江门市崖门新财富环保工业有限公司 A kind of nozzle of novel pulpous bed gas reactor distributor

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