CN202509044U - Shell-and-tube-type solid-solid heat exchanger - Google Patents
Shell-and-tube-type solid-solid heat exchanger Download PDFInfo
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- CN202509044U CN202509044U CN 201220076811 CN201220076811U CN202509044U CN 202509044 U CN202509044 U CN 202509044U CN 201220076811 CN201220076811 CN 201220076811 CN 201220076811 U CN201220076811 U CN 201220076811U CN 202509044 U CN202509044 U CN 202509044U
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Abstract
The utility model discloses a shell-and-tube-type solid-solid heat exchanger, which is used for exchanging heat between unmixed cold solid particles and hot solid particles. A tube pass consists of inner space of an upper head (3), inner space of a lower head (4) and inner space of a heat exchange tube (2); a shell pass consists of space which is formed by a shell (1), an upper tube plate (5), a lower tube plate (6) and the heat exchange tube (2); the tube pass and the shell pass are provided with a fluidizer respectively, and the cold solid particles and the hot solid particles are respectively fluidized and flow in the tube pass and the shell pass; and heat exchange between the cold solid particles and the hot solid particles is realized by the heat exchange tube (2). By the heat exchanger, heat exchange between a hot recycling agent and a cold spent catalyst can be realized in a catalytic cracking unit, so that stable operation of high catalyst-to-oil ratio is realized, the heat balance of the whole device is maintained, and the liquid yield of the device is improved; and hot steam stripping of the spent catalyst can be realized, and the efficiency of the catalytic cracking unit is improved at the same time. The shell-and-tube-type solid-solid heat exchanger can be used for all catalytic cracking units and other devices with requirement for heat exchange between the cold solid particles and the hot solid particles.
Description
Affiliated technical field
The present invention relates to admittedly interchanger of a kind of shell-and-tube that heat exchange is carried out in not blending between hot and cold solid particulate; Have tube side, shell side and fluidisation lifting gear; Hot and cold solid particulate is fluidization flow in the stroke of correspondence respectively, between hot and cold solid particulate, realizes heat exchange through heat exchange surface.Through this device, can on CCU, realize the high agent-oil ratio operation, and keep the thermal equilibrium of total system, thereby realize the energy-conservation stable operation of high agent-oil ratio of catalytic cracking process, improve the device liquid yield.
Background technology
, the patent No. proposed in catalytic cracking process, to realize stablize the process method that high agent-oil ratio is operated in being 201020678212.2 patent.The present invention relates to a kind of shell-and-tube that between hot and cold catalyzer, carries out heat exchange and consolidate interchanger, can offer help for realizing above-mentioned high agent-oil ratio technology.
The agent-oil ratio of catalyzed cracking processing process becomes with raw material and fabrication process condition, generally between 4～8.Document all shows with experiment; In the RFCC course of processing, adopt bigger agent-oil ratio (catalyst active center increases), lower primary catalyst temperature; Can effectively suppress dry gas and coke yield, obtain higher liquid yield, make device produce bigger economic benefit.
When adopting big agent-oil ratio operation,, must cool to regenerator, to keep the heat balance in the reactor drum in order in riser reactor, to keep suitable temperature of reaction.Present method is to adopt external warmer; Heat exchange between regenerator and water (water vapor); Agent cools to high temperature regeneration, with the temperature of CONTROL PROCESS reaction process, keeps temperature and heat balance in the reactor drum under the high agent-oil ratio operational condition; The heat that takes out is used to produce superheated vapour, incorporates steam pipe system into.
Though adopt this method rising agent oil ratio to a certain extent; But the problem that adopts this method to exist is to sum up under the condition that the carbon amount is roughly constant, regeneration temperature certain, the heat of revivifier generation is certain, along with the increase of agent-oil ratio at catalyzer; The heat that external warmer is taken away progressively increases; This part heat is used to produce water vapor and incorporates steam pipe system into, no longer returns regeneration system rapidly, and the raising of agent-oil ratio receives certain limitation.
In addition, because the raw material of catalyzed cracking processing process becomes heavy, reclaimable catalyst also has the not heavy constituent of complete reaction of part at catalyst surface except carrying oil gas.Conventional gas stripping process; Can carry out stripping to the oil gas that spent agent carries, but owing to can not realize intensification to the low temperature reclaimable catalyst, can't to the part that has on the spent agent not the heavy constituent of complete reaction carry out stripping; This part raw material will get into revivifier and burnt; Thereby limited the further raising of liquid yield, can not reduce the coking of spent agent, and reduce the hydrogen-carbon ratio in the coking.
The shell-and-tube that the present invention proposes interchanger has admittedly solved this problem, adopts shell-and-tube of the present invention interchanger admittedly, can between hot and cold solid particulate, not blending carry out heat exchange.For the application in CCU, can reduce the temperature of high temperature regeneration agent, in riser reactor, realize the operation of high agent-oil ratio; And can improve the temperature of spent agent, make the heavy constituent of the not complete reaction that spent agent carries continue reaction, spent agent is carried out sufficient hot stripping; Improve liquid yield, can reduce coke yield simultaneously, and reduce the hydrogen-carbon ratio of spent agent coking; Reduce steam partial pressure in the revivifier, the hydrothermal deactivation of slowing down catalyzer.
The interchanger that exists at present is between cold and hot fluid, to carry out heat exchange, and the interchanger that heat exchange is carried out in not blending between hot and cold solid particulate is not seen report as yet.In catalytic cracking process, spent agent is carried out hot stripping and can produce good result, carried out big quantity research at present, but do not find feasible method as yet, the shell-and-tube that the present invention proposes interchanger has admittedly solved this problem.
Summary of the invention
The present invention proposes a kind of shell-and-tube that between hot and cold solid particulate, carries out heat exchange and consolidates interchanger.Through grain fluidized device is set in interchanger, make hot and cold grain fluidizedly, obtain having the fluidized particles of fluid flow characteristics, in interchanger, flow, and be implemented in the heat exchange between the hot and cold solid particulate by flow direction.
The shell-and-tube that the present invention proposes is interchanger admittedly, by shell (1), heat transfer tube (2), upper cover (3), lower cover (4), upper tubesheet (5), lower tubesheet (6), shell side middle part fluidized wind sparger (7), shell side bottom fluidized wind sparger (8); Cold spent agent inlet (9), hot spent agent outlet (10), thermal regenerant inlet (11); Cooling regenerator outlet (12); Hot stripping oil gas vent (13), tube side top catalyst distribution dish (14), tube side top fluidized wind sparger (15); Tube side bottom fluidized wind sparger (16), curved baffle (17) is formed; Shell side is formed in space by between shell (1), heat transfer tube (2), upper tubesheet (5), the lower tubesheet (6), forms tube side by upper cover (3), lower cover (4) and heat transfer tube (2) internal flow space; Interchanger is vertically placed, fluidisation, the mobile and realization heat exchange in shell side, tube side respectively of hot and cold solid particulate, the temperature of reduction thermal regenerant; Improve the temperature of cold spent agent; And heat taken back revivifier, when realizing the high agent-oil ratio operation, guarantee the heat balance of total system.
Described shell-and-tube is admittedly in the interchanger, shell (1) be shaped as right cylinder, diameter is D, length is L, is provided with cold spent agent inlet (9) at an upper portion thereof, is provided with hot spent agent outlet (10) in its underpart, is provided with hot stripping oil gas vent (13) at its top; The scope of its length-to-diameter ratio L/D is 1～20.
Described shell-and-tube is admittedly in the interchanger, heat transfer tube (2) be shaped as right cylinder, diameter is d, length is l, and radical is decided as required.
Described shell-and-tube is consolidated in the interchanger; Upper cover (3) is the elipse head that has straight section; Diameter is D, and straight section length is L1, and its underpart is connected with the top and the upper tubesheet (5) of shell (1); At its top or straight section position, side have thermal regenerant inlet (11), the scope of its length-to-diameter ratio L1/D is 0.1～6; Lower cover (4) is the elipse head that has straight section, and diameter is D, and straight section length is L2; Be inverted and install; Its top is connected with the bottom and the lower tubesheet (6) of shell (1), has cooling regenerator outlet (12) in its bottom or straight section position, side, and the scope of its length-to-diameter ratio L2/D is 0.1～6.
Described shell-and-tube is admittedly in the interchanger, upper tubesheet (5) and lower tubesheet (6) be shaped as disc, its cylindrical position and shell (1) and upper cover (5) or lower cover (6) are located by connecting, and have some circular holes on it, fixedly heat transfer tube (2).
Described shell-and-tube is consolidated in the interchanger; Shell side middle part fluidized wind sparger (7) is positioned at the shell side spatial middle part between shell (1) and the heat transfer tube (2); Several layers can be arranged, and under the fluidized wind effect of its ejection, cold spent agent particle is fluidisation in the shell side space; Uniform distribution forms dense phase fluidized bed in this space; Shell side bottom fluidized wind sparger (8) is positioned at the shell side spatial bottom between shell (1) and the heat transfer tube (2); Under the fluidized wind effect of its ejection; Cold spent agent particle is fluidisation in the shell side space; In this space, form dense phase fluidized bed, hot spent agent outlet (10) the outflow heat exchanger shell side through the shell side bottom gets into revivifier.
Described shell-and-tube is consolidated in the interchanger, and hot stripping oil gas vent (13) is arranged on the close phase material level of shell side, the shell side top of space; After spent agent heated up in interchanger, hot stripping oil gas flowed out from hot stripping oil gas vent (13), got into settling vessel or gas pipeline; Hot stripping oil gas vent (13) bottom is provided with curved baffle (17), prevents that the oil gas entrained catalyst from leaving admittedly interchanger.
Described shell-and-tube is consolidated in the interchanger; Tube side top catalyst distribution dish (14) is positioned at the tube side thermal regenerant upper entrance spatial top that is made up of upper cover (3) and upper tubesheet (5); Be shaped as taper shape, have some distributed holes on the conical surface, by the thermal regenerant of thermal regenerant inlet (11) inflow; Under the effect of its shape, uniform distribution on whole cross section.
Described shell-and-tube is consolidated in the interchanger; Tube side top fluidized wind sparger (15) is positioned at the tube side thermal regenerant upper entrance spatial bottom that is made up of upper cover (3) and upper tubesheet (5); Under the fluidized wind effect of its ejection; The hot catalyst particles fluidisation, the uniform distribution on upper tubesheet (5) top, and evenly flow into every heat transfer tube (2); Tube side bottom fluidized wind sparger (16) is positioned at the tube side cooling regenerator lower part outlet spatial bottom that is made up of lower cover (4) and lower tubesheet (6); Under the fluidized wind effect of its ejection; Grain fluidized, the mixed heat transfer of the effusive cooling regenerator of each heat transfer tube (2); Through cooling regenerator outlet (12) outflow heat exchanger tube side, get into riser reactor then.
Described shell-and-tube is consolidated in the interchanger; The ratio of the thermal regenerant of coming in the amount that gets into the thermal regenerant of interchanger admittedly and the revivifier is 0-100%, and getting into the amount of the cold spent agent of consolidating interchanger and the ratio of the cold spent agent that settling vessel is come is 0-100%.
Shell-and-tube through the present invention proposes is consolidated interchanger; Can be under not blending condition; Regenerator (hot particle) is cooled off and draw heat, and this part heat is delivered to spent agent (cold particle), make its intensification; And realize getting into regeneration system rapidly regeneration through the spent agent behind intensification and the hot stripping by the hot stripping to spent agent.Thermal regenerant is suitably lowered the temperature, thereby can realize the high agent-oil ratio operation at riser reactor; Cold spent agent obtains heating up, and realizes hot stripping, and bring heat into regeneration system rapidly, thereby guarantee under the high agent-oil ratio condition, can keep revivifier thermal equilibrium that regenerative process and entire operation process can normally be carried out, thereby improves the device liquid yield.
Shell-and-tube through the present invention proposes is consolidated interchanger; Can increase substantially agent-oil ratio; Select to provide big latitude for the agent-oil ratio of CCU operation, the upper limit that can realize agent-oil ratio depends on the degree of raw oil heaviness, can reach the mxm. (can reach 8～25) of theoretical upper limit; The agent-oil ratio that raw oil heavy more (carbon residue is high more) can be realized is big more, thus the abundant potentiality of excavating gear.
The shell-and-tube that proposes through the present invention is interchanger admittedly, not only can the heat that obtain through the cooling regenerator be returned regeneration system rapidly, guarantees that regenerative process and entire operation process are normally carried out under the high agent-oil ratio condition; Thereby improve the device liquid yield, and, control through main air because the heat that reclaims gets into regeneration system rapidly; Regenerative process under the assurance high agent-oil ratio operational condition is regulated through main air after normally carrying out, and can obtain more high-temperature flue gas; Get into the high-temperature flue gas energy-recuperation system; Change high-grade electric energy into, can install personal or output, produce higher added benefit; Rather than, produce low-grade steam with external warmer as in the past.Therefore the shell-and-tube of the present invention's proposition is consolidated the overall benefit that interchanger can significantly improve CCU.
Owing to consolidate interchanger through shell-and-tube of the present invention; The temperature of high agent-oil ratio operation reduction the initial live catalyst (regenerator); Reduce in the catalytic cracking spraying charging overcracking that contacts oil droplet and oil gas with thermocatalyst at first, can reduce the productive rate of dry gas and coke.Owing to increased agent-oil ratio, increase relatively at the activity of such catalysts center, under well-defined reaction temp, has improved the selectivity and the transformation efficiency of reaction process simultaneously, makes liquid yield increase.
In addition, consolidate interchanger, spent agent is heated up through the shell-and-tube that the present invention proposes; Can produce hot steam stripped effect to spent agent; The oil gas that carries in the catalyzer is proposed, and the component that makes complete reaction not once more cracking reaction obtain more heavy wool gas, thereby obtain sufficient Stripping effect; Cold particle (spent agent) stroke top at interchanger has hot stripping oil gas vent, hot stripping oil gas is returned settling vessel or gas pipeline, thereby obtain higher light-end products yield, and reduce coke yield, improves the device benefit.Through in interchanger, behind the hot stripping, reducing the coking on the spent agent and reduce the hydrogen-carbon ratio in the coking, reduce steam partial pressure in the revivifier, the hydrothermal deactivation of slowing down catalyzer, thus for improving the carbon-burning capacity of revivifier, improve device output and lay the foundation.Spent agent is carried out hot stripping can produce good result, carried out big quantity research at present, but do not find feasible method as yet, the shell-and-tube that the present invention proposes interchanger has admittedly solved this problem.
Description of drawings
Fig. 1 is that the shell-and-tube that the present invention proposes is consolidated interchanger main body figure.
Among Fig. 1,1. shell, 2. heat transfer tube, 3. upper cover, 4. lower cover; 5. upper tubesheet, 6. lower tubesheet, 7. shell side middle part fluidized wind sparger, 8. shell side bottom fluidized wind sparger, 9. cold spent agent inlet; 10. hot spent agent outlet, 11. thermal regenerants inlet, 12. cooling regenerator outlets, 13. hot stripping oil gas vents; 14. tube side top catalyst distribution dish, 15. tube side top fluidized wind spargers, 16. tube side bottom fluidized wind spargers, 17. curved baffles.
Embodiment
Fig. 1 illustrates a kind of shell-and-tube interchanger admittedly, by shell (1), heat transfer tube (2), upper cover (3), lower cover (4), upper tubesheet (5), lower tubesheet (6), shell side middle part fluidized wind sparger (7), shell side bottom fluidized wind sparger (8); Cold spent agent inlet (9), hot spent agent outlet (10), thermal regenerant inlet (11); Cooling regenerator outlet (12); Hot stripping oil gas vent (13), tube side top catalyst distribution dish (14), tube side top fluidized wind sparger (15); Tube side bottom fluidized wind sparger (16), curved baffle (17) is formed; Shell side is formed in space by between shell (1), heat transfer tube (2), upper tubesheet (5), the lower tubesheet (6), forms tube side by upper cover (3), lower cover (4) and heat transfer tube (2) internal flow space; Interchanger is vertically placed, fluidisation, the mobile and realization heat exchange in shell side, tube side respectively of hot and cold solid particulate, the temperature of reduction thermal regenerant; Improve the temperature of cold spent agent; And heat taken back revivifier, when realizing the high agent-oil ratio operation, guarantee the heat balance of total system.
With reference to figure 1, shell (1) be shaped as right cylinder, diameter is D, length is L, is provided with cold spent agent inlet (9) at an upper portion thereof, is provided with hot spent agent outlet (10) in its underpart, is provided with hot stripping oil gas vent (13) at its top; The scope of its length-to-diameter ratio L/D is 1～20.
With reference to figure 1, heat transfer tube (2) be shaped as right cylinder, diameter is d, length is l, radical is decided as required.
With reference to figure 1, upper cover (3) is the elipse head that has straight section, and diameter is D; Straight section length is L1; Its underpart is connected with the top and the upper tubesheet (5) of shell (1), at its top or straight section position, side have thermal regenerant inlet (11), the scope of its length-to-diameter ratio L1/D is 0.1～6; Lower cover (4) is the elipse head that has straight section, and diameter is D, and straight section length is L2; Be inverted and install; Its top is connected with the bottom and the lower tubesheet (6) of shell (1), has cooling regenerator outlet (12) in its bottom or straight section position, side, and the scope of its length-to-diameter ratio L2/D is 0.1～6.
With reference to figure 1, upper tubesheet (5) and lower tubesheet (6) be shaped as disc, its cylindrical position and shell (1) and upper cover (5) or lower cover (6) are located by connecting, and have some circular holes on it, fixedly heat transfer tube (2).
With reference to figure 1, shell side middle part fluidized wind sparger (7) is positioned at the shell side spatial middle part between shell (1) and the heat transfer tube (2), and several layers can be arranged; Under the fluidized wind effect of its ejection; Cold spent agent particle is fluidisation in the shell side space, and uniform distribution forms dense phase fluidized bed in this space; Shell side bottom fluidized wind sparger (8) is positioned at the shell side spatial bottom between shell (1) and the heat transfer tube (2); Under the fluidized wind effect of its ejection; Cold spent agent particle is fluidisation in the shell side space; In this space, form dense phase fluidized bed, hot spent agent outlet (10) the outflow heat exchanger shell side through the shell side bottom gets into revivifier.
With reference to figure 1, hot stripping oil gas vent (13) is arranged on the close phase material level of shell side, the shell side top of space; After spent agent heated up in interchanger, hot stripping oil gas flowed out from hot stripping oil gas vent (13), got into settling vessel or gas pipeline; Hot stripping oil gas vent (13) bottom is provided with curved baffle (17), prevents that the oil gas entrained catalyst from leaving admittedly interchanger.
With reference to figure 1; Tube side top catalyst distribution dish (14) is positioned at the tube side thermal regenerant upper entrance spatial top that is made up of upper cover (3) and upper tubesheet (5); Be shaped as taper shape, have some distributed holes on the conical surface, by the thermal regenerant of thermal regenerant inlet (11) inflow; Under the effect of its shape, uniform distribution on whole cross section.
With reference to figure 1; Tube side top fluidized wind sparger (15) is positioned at the tube side thermal regenerant upper entrance spatial bottom that is made up of upper cover (3) and upper tubesheet (5); Under the fluidized wind effect of its ejection; The hot catalyst particles fluidisation, the uniform distribution on upper tubesheet (5) top, and evenly flow into every heat transfer tube (2); Tube side bottom fluidized wind sparger (16) is positioned at the tube side cooling regenerator lower part outlet spatial bottom that is made up of lower cover (4) and lower tubesheet (6); Under the fluidized wind effect of its ejection; Grain fluidized, the mixed heat transfer of the effusive cooling regenerator of each heat transfer tube (2); Through cooling regenerator outlet (12) outflow heat exchanger tube side, get into riser reactor then.
With reference to figure 1, the ratio of the thermal regenerant of coming in the amount that gets into the thermal regenerant of interchanger admittedly and the revivifier is 0-100%, and getting into the amount of the cold spent agent of consolidating interchanger and the ratio of the cold spent agent that settling vessel is come is 0-100%.
The shell-and-tube that the present invention proposes is the use of interchanger admittedly; For example can be that thermal regenerant gets into interchanger, fluidisation under the fluidizing agent effect of tube side top catalyst distribution dish (14) and tube side top fluidized wind sparger (15) through thermal regenerant inlet (11); On upper tubesheet (5) top uniform distribution, evenly flow into each heat transfer tube (2); After heat transfer tube (2) heat exchange cooling, get into the tube side bottom, fluidisation under the fluidizing agent effect of tube side bottom fluidized wind sparger (16); Through cooling regenerator outlet (12) outflow heat exchanger, get into riser reactor then; Cold spent agent gets into heat exchanger shell pass through cold spent agent inlet (9); Fluidisation under the effect of shell side middle part fluidized wind sparger (7) and shell side bottom fluidized wind sparger (8) fluidizing agent; In shell side, flow downward, and form material level in the position, middle and upper part of shell side, it is moving that dense-phase flow is formed at the material level bottom; Material level top is that dilute phase flows; Through thermal regenerant heat exchange in heat transfer tube (2) and the tube side and intensification, the spent agent of intensification exports (10) outflow heat exchanger from hot spent agent in flow process, gets into revivifier regeneration then.Because the stripping effect of fluidizing agent, the oil gas in the shell side between the spent agent particle is replaced stripping, upwards flows with fluidizing agent; And because the spent agent temperature raises; The heavy component of the not complete reaction of adhering on the spent agent in the shell side further is cracked into oil gas; Be fluidized the gas stripping and upwards flow, these oil gas are along with stripping gas is overflowed the entering dilute phase region from material level, at last from hot stripping oil gas vent (13) outflow heat exchanger at last; Get into settling vessel or gas pipeline, get into fractionating system then.Near the inlet of hot stripping oil gas vent (13), be provided with curved baffle (17), to reduce the granules of catalyst that oil gas carries.Further cracking after owing to heat up is compared with traditional gas stripping process and can be produced more oil gas, obtains more clean cargo, and reduces the hydrogen-carbon ratio of adhering to coke on the spent agent greatly, reduces the productive rate of coke.Owing to the reduction of coke yield, can also improve the load of revivifier, improve the treatment capacity of device.Because the hydrogen-carbon ratio of coking on spent agent behind the overheated stripping reduces greatly, in the regenerative process to spent agent, the dividing potential drop of water vapour reduces greatly, the hydrothermal deactivation phenomenon of catalyzer in the formation thereby effective inhibition was regenerated.
The shell-and-tube that gets into the present invention's proposition is consolidated the thermal regenerant and the cold spent agent of interchanger, can be all, also can be a part.Having only portion of hot regenerator and cold spent agent to get under the situation of interchanger heat exchange; Flow out cooling regenerator outlet (12) afterwards at the cooling regenerator, also need install mixed heat exchanger additional, make portion of hot regenerator and cooling regenerator mixed heat transfer; Reach temperature evenly after, get into riser reactor.
Shell-and-tube through the present invention proposes is consolidated interchanger; Not only can the heat that produce through the cooling regenerator be returned regeneration system rapidly; Guarantee that regenerative process and entire operation process are normally carried out under the high agent-oil ratio condition, thereby improve the device liquid yield, improve the device benefit; And because the heat that reclaims gets into regeneration system rapidly; Regenerative process under the assurance high agent-oil ratio operational condition will get into the high-temperature flue gas energy-recuperation system after normally carrying out, and change high-grade electric energy into; Can install personal or output, produce higher added benefit.In addition,, reduced in the catalytic cracking spraying charging overcracking that contacts oil droplet with thermocatalyst at first, can reduce the productive rate of dry gas and coke because high agent-oil ratio operation has reduced the temperature of initial live catalyst.In addition,, further improve liquid yield, reduce the catalyzer coking, and reduce the hydrogen-carbon ratio in the coking because the raising of spent agent temperature in interchanger can realize hot stripping.
Laboratory study and industrial implementation example show that in the high agent-oil ratio operation, when the live catalyst temperature reduced by 10 ℃～40 ℃, liquid yield can improve more than 2.5%, remarkable benefit.
The shell-and-tube that the present invention proposes is interchanger admittedly, can be used for the device that all CCUs and other need heat exchange between cold and hot solid particulate.
Claims (10)
1. shell-and-tube interchanger admittedly, it is characterized in that: it is made up of shell (1), heat transfer tube (2), upper cover (3), lower cover (4), upper tubesheet (5), lower tubesheet (6), shell side middle part fluidized wind sparger (7), shell side bottom fluidized wind sparger (8), cold spent agent inlet (9), hot spent agent outlet (10), thermal regenerant inlet (11), the outlet of cooling regenerator (12), hot stripping oil gas vent (13), tube side top catalyst distribution dish (14), tube side top fluidized wind sparger (15), tube side bottom fluidized wind sparger (16), curved baffle (17); Shell side is formed in space by between shell (1), heat transfer tube (2), upper tubesheet (5), the lower tubesheet (6), forms tube side by upper cover (3), lower cover (4) and heat transfer tube (2) internal flow space; Interchanger is vertically placed, fluidisation, the mobile and realization heat exchange in shell side, tube side respectively of hot and cold solid particulate, the temperature of reduction thermal regenerant; Improve the temperature of cold spent agent; And heat taken back revivifier, when realizing the high agent-oil ratio operation, guarantee the heat balance of total system.
2. consolidate interchanger by the described shell-and-tube of claim 1; It is characterized in that: shell (1) be shaped as right cylinder; Diameter is D, and length is L, is provided with cold spent agent inlet (9) at an upper portion thereof, is provided with hot spent agent outlet (10) in its underpart, is provided with hot stripping oil gas vent (13) at its top; The scope of its length-to-diameter ratio L/D is 1～20.
3. by the described shell-and-tube of claim 1 interchanger admittedly, it is characterized in that: heat transfer tube (2) be shaped as right cylinder, diameter is d, length is l, and radical is decided as required.
4. consolidate interchanger by the described shell-and-tube of claim 1; It is characterized in that: upper cover (3) is the elipse head that has straight section; Diameter is D, and straight section length is L1, and its underpart is connected with the top and the upper tubesheet (5) of shell (1); At its top or straight section position, side have thermal regenerant inlet (11), the scope of its length-to-diameter ratio L1/D is 0.1～6; Lower cover (4) is the elipse head that has straight section, and diameter is D, and straight section length is L2; Be inverted and install; Its top is connected with the bottom and the lower tubesheet (6) of shell (1), has cooling regenerator outlet (12) in its bottom or straight section position, side, and the scope of its length-to-diameter ratio L2/D is 0.1～6.
5. consolidate interchanger by the described shell-and-tube of claim 1; It is characterized in that: upper tubesheet (5) and lower tubesheet (6) be shaped as disc; Its cylindrical position and shell (1) and upper cover (5) or lower cover (6) are located by connecting, and have some circular holes on it, fixedly heat transfer tube (2).
6. consolidate interchanger by the described shell-and-tube of claim 1; It is characterized in that: shell side middle part fluidized wind sparger (7) is positioned at the shell side spatial middle part between shell (1) and the heat transfer tube (2); Several layers can be arranged, and under the fluidized wind effect of its ejection, cold spent agent particle is fluidisation in the shell side space; Uniform distribution forms dense phase fluidized bed in this space; Shell side bottom fluidized wind sparger (8) is positioned at the shell side spatial bottom between shell (1) and the heat transfer tube (2); Under the fluidized wind effect of its ejection; Cold spent agent particle is fluidisation in the shell side space; In this space, form dense phase fluidized bed, hot spent agent outlet (10) the outflow heat exchanger shell side through the shell side bottom gets into revivifier.
7. consolidate interchanger by the described shell-and-tube of claim 1, it is characterized in that: hot stripping oil gas vent (13) is arranged on the close phase material level of shell side, the shell side top of space; After spent agent heated up in interchanger, hot stripping oil gas flowed out from hot stripping oil gas vent (13), got into settling vessel or gas pipeline; Hot stripping oil gas vent (13) bottom is provided with curved baffle (17), prevents that the oil gas entrained catalyst from leaving admittedly interchanger.
8. consolidate interchanger by the described shell-and-tube of claim 1; It is characterized in that: tube side top catalyst distribution dish (14) is positioned at the tube side thermal regenerant upper entrance spatial top that is made up of upper cover (3) and upper tubesheet (5); Be shaped as taper shape, have some distributed holes on the conical surface, by the thermal regenerant of thermal regenerant inlet (11) inflow; Under the effect of its shape, uniform distribution on whole cross section.
9. consolidate interchanger by the described shell-and-tube of claim 1; It is characterized in that: tube side top fluidized wind sparger (15) is positioned at the tube side thermal regenerant upper entrance spatial bottom that is made up of upper cover (3) and upper tubesheet (5); Under the fluidized wind effect of its ejection; The hot catalyst particles fluidisation, the uniform distribution on upper tubesheet (5) top, and evenly flow into every heat transfer tube (2); Tube side bottom fluidized wind sparger (16) is positioned at the tube side cooling regenerator lower part outlet spatial bottom that is made up of lower cover (4) and lower tubesheet (6); Under the fluidized wind effect of its ejection; Grain fluidized, the mixed heat transfer of the effusive cooling regenerator of each heat transfer tube (2); Through cooling regenerator outlet (12) outflow heat exchanger tube side, get into riser reactor then
10. consolidate interchanger by the described shell-and-tube of claim 1; It is characterized in that: the ratio of the thermal regenerant of coming in the amount that gets into the thermal regenerant of interchanger admittedly and the revivifier is 0-100%, and getting into the amount of the cold spent agent of consolidating interchanger and the ratio of the cold spent agent that settling vessel is come is 0-100%.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220076811 CN202509044U (en) | 2012-03-02 | 2012-03-02 | Shell-and-tube-type solid-solid heat exchanger |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220076811 CN202509044U (en) | 2012-03-02 | 2012-03-02 | Shell-and-tube-type solid-solid heat exchanger |
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| CN202509044U true CN202509044U (en) | 2012-10-31 |
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| CN 201220076811 Expired - Fee Related CN202509044U (en) | 2012-03-02 | 2012-03-02 | Shell-and-tube-type solid-solid heat exchanger |
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| CN (1) | CN202509044U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103289726A (en) * | 2012-03-02 | 2013-09-11 | 中国石油大学(北京) | Tube-shell type solid-solid heat exchanger |
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2012
- 2012-03-02 CN CN 201220076811 patent/CN202509044U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103289726A (en) * | 2012-03-02 | 2013-09-11 | 中国石油大学(北京) | Tube-shell type solid-solid heat exchanger |
| CN103289726B (en) * | 2012-03-02 | 2015-07-15 | 中国石油大学(北京) | Tube-shell type solid-solid heat exchanger |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121031 Termination date: 20160302 |