CN201055771Y - Constant temperature heat-exchanger apparatus suitable for strong exothermic reaction - Google Patents
Constant temperature heat-exchanger apparatus suitable for strong exothermic reaction Download PDFInfo
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- CN201055771Y CN201055771Y CNU200720149590XU CN200720149590U CN201055771Y CN 201055771 Y CN201055771 Y CN 201055771Y CN U200720149590X U CNU200720149590X U CN U200720149590XU CN 200720149590 U CN200720149590 U CN 200720149590U CN 201055771 Y CN201055771 Y CN 201055771Y
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- temperature heat
- heat exchanging
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Abstract
The utility model provides a constant-temperature heat exchanger which is used for strong heat generation reaction; the exchanger comprises a heater, a reactor, a sleeve and a water storage tank; the reactor is arranged in the sleeve and the heater is connected with the bottom of the reactor and the sleeve, a flue air duct and a raw material air duct are arranged in the heater; the inlet of the flue air duct is arranged on the upper part of the heater and the outlet is arranged on the lower part of the heater; the inlet and the outlet of the raw material air duct are separately arranged on the heater wall; the outlet of the raw material air duct of the heater is communicated with the inlet of the raw material air duct which is arranged on the bottom of the reactor; the heater wall is also provided with a circulating water inlet and a circulating water outlet and the outlet is connected with the sleeve and communicated with the space between the reactor and the sleeve; one end of the water storage tank is communicated with the circulating water outlet which is arranged on the upper end of the sleeve and the other end is communicated with the circulating water inlet which is arranged on the heater wall. The utility model is characterized by excellent heat conducting effect and small temperature variation; moreover, the utility model can automatically maintain the target temperature and the utility model is safe and reliable.
Description
Technical field
The utility model provides a kind of constant-temperature heat exchanging device, and especially a kind of constant-temperature heat exchanging device that is applicable to strong exothermal reaction particularly is to be applicable to the device of reaction temperature less than 350 ℃ gas-solid (or other is heterogeneous) strong exothermal reaction.It adopts novel constant temperature heat exchange EGR, bottom-up and go by the recirculated water in the sleeve pipe and the reacting gas following current in the reactor, a large amount of heat that reaction is emitted shifts out effectively, energy supplement is carried out in the place of heat of reaction deficiency, reaction is in " constant temperature scope " to be taken place, guarantee effectively carrying out of reaction, improve the efficient of reaction.
Background technology
Gas-solid (or other is heterogeneous) course of reaction, especially gas-solid catalysis process are courses of reaction most widely used, largest in the chemical industry.According to statistics, there are 90% chemical products to produce approximately by the product tonnage meter by the gas-solid phase reaction process.Most course of reaction is all with fuel factor, because the carrier of catalyst often all is the relatively poor material of heat conductivility, and temperature is very sensitive to the influence of reaction result, and therefore heat transfer has become a difficult point with temperature control.
Traditional gas-solid phase reaction gas all is from top to down by reactor, and the circulatory mediator of condensation then is from going up circulated in countercurrent down, and this mode is applicable to the reaction of reaction temperature broad, and then effect is unsatisfactory for reaction that temperature requirement is strict.A large amount of heat that gas-solid reaction is emitted generally all concentrates on the position of reaction beginning, and promptly gas exothermic heat of reaction amount firm and the beds position contacting is very big, and along with the carrying out of reaction, reactant concentration reduces, and its thermal discharge also descends gradually.Traditional circulatory mediator from going up circulated in countercurrent down is lower in the porch temperature, and the exit temperature raises, and is consistent with the exothermic heat of reaction quantitative changeization, therefore can not get sufficient heat exchange, and reaction efficiency is not high, even high temperature hotspot can occur, causes catalyst by scaling loss.And traditional circulatory mediator thermal capacitance is little, and poor mobile performance needs power set.
The utility model content
Defective at the prior art existence, the utility model provides a kind of novel constant-temperature heat exchanging device, especially a kind of constant-temperature heat exchanging device that is applicable to strong exothermal reaction, it adopts the sleeve structure that adds recirculated water, recirculated water flows in sleeve pipe from bottom to top, and reacting gas also is mobile from bottom to top.Recirculated water is lower in reactor inlet section temperature, can the more reaction heat of fast Absorption, and in the reactor outlet section because the temperature of recirculated water has risen to the highest, can carry out energy supplement to the place of heat of reaction deficiency, realized that entire reaction carries out within one " constant temperature scope ", improved reaction efficiency.
The utility model purpose is at strong exothermal reaction, especially reaction temperature is less than 350 ℃ strong exothermal reaction, and requires reaction temperature to change less process, a kind of suitable constant-temperature heat exchanging device of being developed, take place to guarantee that reaction is in " constant temperature scope ", improve the efficient of reaction.
The purpose of this utility model is achieved by the following technical solution.
This constant-temperature heat exchanging device that the utility model provides comprises heater, reactor, sleeve pipe and water tank, and described reactor is positioned at sleeve pipe; Described heater is connected the bottom of this reactor and sleeve pipe, be provided with flue gas duct and unstripped gas pipeline in this heater, the inlet of this flue gas duct is opened in the top of heater, the outlet of flue gas duct is opened in the bottom of heater, the entrance and exit of this unstripped gas pipeline is opened in respectively on the wall of heater, wherein, the outlet of the unstripped gas pipeline of heater is connected with the unstripped gas inlet of reactor bottom setting; Also offer recirculated water inlet and circulating water outlet on the wall of heater, the circulating water outlet on the wall of this heater is connected with described sleeve pipe, and is connected with space between reactor and the sleeve pipe; The circulating water outlet that the upper end of described water tank one end and sleeve pipe is provided with is connected, and the recirculated water on the wall of the other end and heater enters the mouth and is connected.
The preferred cycle water inlet is opened in the bottom of the wall of heater in the said apparatus, and circulating water outlet is opened in the top of the wall of heater, and communicates with described reactor sleeve pipe outward.Be upward through sleeve pipe after the structure of this recirculated water inlet and circulating water outlet makes the recirculated water that moves in this constant-temperature heat exchanging device heat and flow to the water tank that is arranged in the sleeve pipe top in this heater, enter the recirculated water inlet of heater afterwards by described reactor exterior tubing, to realize the circulation of recirculated water.
For heating makes it reach design temperature to recirculated water, the utility model is provided with flue gas duct in described heater structure purpose is to realize that flue gas is heated to predetermined temperature with the recirculated water of heater internal circulation; This flue gas duct is preferably helical form and up pipeline, and the unstripped gas pipeline of establishing in the heater also is preferably spiral pipe, and purpose is to increase heat transfer area, improves heat exchanger effectiveness.Simultaneously, the recirculated water that is adopted in the utility model also can substitute with high-temperature flue gas, and purpose is that the material in the reactor is heated.
Above-mentioned constent temperature heater is applicable to strong exothermal reaction, and especially reaction temperature can guarantee that less than 350 ℃ strong exothermal reaction strong exothermal reaction takes place in application in " constant temperature scope ", improves the efficient of reaction.
Constant-temperature heat exchanging device described in the utility model, the bottom of described reactor preferably also is connected with product gatherer and product groove successively, this product gatherer is to be used for being collected in the product that the boiling point that strong exothermal reaction generated that carries out in this reactor is higher than reaction temperature, and this product groove is to be used for collecting the product that transports out from this product gatherer.The top of described reactor preferably is connected with heat exchanger and three phase separator successively, liquid hydrocarbon product and unconverted synthesis gas are sifted out in the product that reaction the is generated first condensation of flowing through behind this heat exchanger and the three phase separator, and it carries out water, oil phase and gas phase separation in this three phase separator again.
In the above-mentioned constant-temperature heat exchanging device, on described water tank, also be provided with liquid level gauge and turnover valve, utilize this liquid level gauge to indicate the interface of the water vapour on the water of water tank bottom and top, and carry out replenishing and discharging of water by this turnover valve; In order to guarantee the security needs of suitability for industrialized production, more preferably be provided with explosion-proof valve on the described water tank, this explosion-proof valve can the overvoltage releasing pressure automatically, the safety of assurance device.
The pipeloop that is provided with between the water tank of constant-temperature heat exchanging device of the present utility model and the circulating water pipeline inlet is two kinds, the forced circulation pipeline (cycle of higher pressure pipeline) that it is and is connected with the automatic pipeloop (Natural Circulation pipeline) of the dependence recirculated water self gravitation operation of putting and relies on the external force forced circulation is for selecting according to different situations.Also be provided with high-pressure circulation pump on the described forced circulation pipeline, this high-pressure circulation pump is used for making described circulating water flow to water tank, by high-pressure circulation pump and directly enter the bottom inlet of heater under the effect of high-pressure circulation pump; Convenient on using also is provided with the recirculated water control valve in the inlet and/or the exit of high-pressure circulation pump, makes recirculated water to be effectively controlled.
In order to increase work efficiency, constant-temperature heat exchanging device of the present utility model is installed the air delivering pipeline that is arranged with at least 1 transferring raw material gas in reactor, preferred two and plural air delivering pipeline, the unstripped gas of air delivering pipeline in unstripped gas pipeline in the heater and this reactor by the reactor bottom setting enters the mouth and is connected, described reacting gas (forming gas or unstripped gas) is earlier by the unstripped gas pipeline in this heater, unstripped gas inlet through reactor enters in the air delivering pipeline of reactor again, be equiped with catalyst (being also referred to as beds) in this air delivering pipeline, reacting gas is by this beds, then carry out strong exothermal reaction, and and this reactor and sleeve pipe between the space in up recirculated water carry out heat exchange, make reacting gas in the process of reaction, reach reaction temperature and remain in the constant temperature scope.
Constant-temperature heat exchanging device described in the utility model, wherein reactor can be single tube or tubulation fixed bed, also can be various bed types such as fluid bed or slurry attitude bed.
In preferred embodiment of the present utility model, installing is arranged with air delivering pipeline (the common bank of reactor of forming of the air delivering pipeline of these two or more transferring raw material gas of the transferring raw material gas more than 1 in the reactor, also claim tubulation), in this constant-temperature heat exchanging device, also comprise the unstripped gas pipeline that navigates within the heater, it is connected with the unstripped gas inlet of air delivering pipeline by reactor in the above-mentioned reactor, the reacting gas of strong exothermal reaction is earlier by the gas pipeline in the heater, enter in the air delivering pipeline that adding of reactor be equipped with catalyst through the unstripped gas of reactor inlet again, then carry out strong exothermal reaction.
Described heater can heat recirculated water by high-temperature flue gas or electric heater, the two carries out indirect heat exchange in sleeve pipe, simultaneously the recirculated water of heat again with heater in the unstripped gas that in the unstripped gas pipeline, moves carry out heat exchange, make unstripped gas up in the reactor reach suitable preheat temperature.Under the normal reaction situation, after promptly circulating water temperature reached the control temperature, heater had been operated with regard to not needing that this recirculated water is carried out concurrent heating, only before circulating water temperature is lower than the control temperature, just need follows Hua Shui to this and heat.Above-mentioned control temperature is meant: the water tank and the external world carry out the portion of hot exchange or keep a jar internal pressure, and this water tank epimere vapor (steam) temperature is remained unchanged, and this temperature is control temperature (being lower than predetermined reaction temperature slightly).
Constant temperature heat exchange EGR of the present utility model, equidirectional by recirculated water in the sleeve pipe and the reacting gas in the reactor, be bottom-up and go, a large amount of heat that reaction is emitted shifts out effectively, energy supplement is carried out in the place of heat of reaction deficiency, make to be reflected in " constant temperature scope " and take place, guarantee effectively carrying out of reaction, improve the efficient of reaction.
Description of drawings
Fig. 1: the utility model is applicable to the constant-temperature heat exchanging device structure chart of strong exothermal reaction;
Fig. 2: heater structure figure of the present utility model;
The device schematic flow sheet of Fig. 3: embodiment one.
Drawing reference numeral:
1---heater 2---high-pressure circulation pump 3---beds
4---reactor 5---sleeve pipe 6---casing walls
7---water tank 8---liquid level gauge 9---turnover valves
10---explosion-proof valve 11---recirculated water control valve
12---the inlet (the unstripped gas inlet that also claims heater) of the unstripped gas pipeline of heater
13---the outlet (also claiming the unstripped gas outlet of heater) of the unstripped gas pipeline of heater
14---unstripped gas inlet 15 of reactor---tail gas outlet of reactor
16---recirculated water inlet 17---circulating water outlet 18---waste gas inlets
19---flue gas outlet 20---gas distribution grid 21---products exports
22,25---product gatherer 23---heat exchanger 24---three phase separators
26---water gatherer 27---product groove 28---tail gas atmospheric valves
The specific embodiment
Describe the utility model in detail below in conjunction with accompanying drawing, but do not limit practical range of the present utility model.
Embodiment one:
As Fig. 1, Fig. 2 and shown in Figure 3, present embodiment is constant-temperature heat exchanging device and the heater that is used for strong exothermal reaction, and concrete structure is as follows:
This device comprises reactor 4, is provided with and is connected the heater 1 of these reactor 4 bottoms, and the effect of heater 1 is to make unstripped gas and recirculated water reach suitable preheat temperature, more respectively from bottom to up by beds 3 and reactor jacket 5; The lower end of described heater 1 is provided with the inlet 12 of the unstripped gas pipeline of heater, the outlet 13 of the unstripped gas pipeline of heater, the unstripped gas inlet 14 of reactor, the unstripped gas of this reactor inlet 14 is connected with described reactor 4, be provided with the heat medium flue gas duct in this heater 1, the inlet of this flue gas duct (waste gas inlet) 18 is opened in the top of heater, the outlet of flue gas duct (flue gas outlet) 19 is opened in the bottom of heater, to enter the recirculated water and the ducted unstripped gas of unstripped gas that move in the heater by flue gas duct heats, recirculated water inlet 16 and circulating water outlet 17 are opened in the bottom and the top of heating wall respectively in the heater 1, and outside circulating water outlet 17 and the described reactor 4, in the casing wall 6 (promptly, in the sleeve pipe 5) the space communicate, directly enter after recirculated water is heated in the space in the sleeve pipe 5 and carry out heat exchange with beds from bottom to top.
The bottom of reactor 4 is connected with products export 21, product gatherer 22,25 and product groove 27 successively, this product gatherer 22 is to be used for being collected in reacting the product that the boiling point that generates is higher than reaction temperature in this reactor, and this product groove 27 is to be used for collecting the product that transports out from this product gatherer.The top of reactor 4 is connected with the heat exchanger 23 of tool condensation and the three phase separator 24 of tool centrifugation successively, the product that reaction is generated is flowed through behind this heat exchanger 23 and the three phase separator 24, elder generation's condensation, to sift out liquid hydrocarbon product and unconverted synthesis gas, in this three phase separator 24, the lower hydro carbons of above-mentioned boiling point and water and unconverted synthesis gas are carried out water again, oil phase and gas phase separation, oil phase can be sent in the described product groove 27 as the cryogenic condensation product after reducing pressure, gas phase then enters and continues reaction in next bank of reactor, so that the reaction of unstripped gas is more abundant.
The top of the sleeve pipe 5 outside reactor 4 also is connected with water tank 7 by the circulating water outlet of offering (not shown), is used for storing the recirculated water that flows out from this sleeve pipe, and this water tank 7 can be regulated temperature, pressure and the liquid level of described recirculated water timely.Preferably also be provided with liquid level gauge 8, turnover valve 9 on this water tank 7 and more preferably also be provided with explosion-proof valve (or claiming safety valve) 10, eliminate because the excessive too fast potential safety hazard of hydraulic pressure rising that causes of heat absorption with timely in order to the situation of level monitoring.
Described water tank 7 lower ends be provided with heater 1 on the recirculated water inlet 16 pipeloop I that communicate that offer, when recirculated water rises to water tank 7, temperature descended after itself and the external world carried out heat exchange, then, begin circulation from the pipeloop of outside because the effect of gravity or high-pressure circulation pump 2 flows down to reenter sleeve bottom.
Be in the example of unstripped gas with the synthesis gas, beds 3 temperature of whole reactor 4 maintain " constant temperature scope " all the time, guaranteed that successful reaction carries out, improved the conversion ratio of synthesis gas (unstripped gas), the synthesis gas conversion per pass is reached more than 65%, compare existing traditional process conditions and improved about 10-20%.And the water in the circular flow can be taken away reaction heat and effectively low-temperature space be replenished rapidly because the effect of gravity is mobile very fast, and water temperature difference is no more than 4 ℃ up and down, has guaranteed carrying out smoothly of heat exchange, has improved the efficient of whole reactor.Also be equiped with water tank 7, liquid level gauge 8 and safety valve 10 in the device of the present utility model, cause the too fast potential safety hazard of hydraulic pressure rising owing to heat absorption is excessive in order to the situation of level monitoring and elimination in time.
The gas that comes out from reactor 4 tops comprises the light hydrocarbon product of unreacted synthesis gas and generation, its temperature is still very high, and through after the condensation of condenser 23, temperature approaches room temperature, enter in the three phase separator 24 that is connected with condenser 23, wherein lower carbon number hydrocarbons (the CH of minute quantity
4Deng) and the unreacted unstripped gas of sub-fraction through tail gas atmospheric valve 28 emptying of three phase separator 24 or as heating fuel.The liquid phase substance of discharging in the three phase separator 24 comprises water two parts of liquefied hydrocarbon and generation, wherein liquefied hydrocarbon enters product gatherer 25, send into product groove 27 after the decompression and carry out deep processing, water enters water gatherer 26, goes rectifying to reclaim the unit with the oxygen-bearing organic matter in the recycle-water afterwards.The boiling point that generates in the reaction then because the effect of self gravitation enters gatherer is cryogenic condensation thing medial launder 22, send the product groove 27 deep processings than the high heavy hydrocarbons of reaction temperature after decompression.
Utilize this fixed bed device to carry out the effect that strong exothermal reaction can reach to be:
(1) unstripped gas can carry out heat exchange in circulating water heater, has reached the reasonable utilization of energy.
(2) with recirculated water reactor is carried out heat-obtaining and concurrent heating, utilized fully the thermal capacitance of water bigger Characteristics, and can choose self-heating pipeloop I and high-pressure pump according to the difference of reaction condition and force to follow Two kinds of different modes of endless tube line II, the optional thermal cycle pipeline I that takes from just can satisfy anti-for the single tube fixed bed The constant temperature scope that should require, multitube fixed bed or other type bigger for the reacting gas inlet amount are passable Choose high-pressure pump forced circulation pipeline II, and can at any time regulate the flow of pump, can make reaction heat a large amount of Shift out, keep the temperature substantially constant of reaction, so the reaction system scope utmost point that the utility model was suitable for Extensively.
(3) the water tank height of level monitoring at any time, and carry out as required the adjusting of the water yield, and And safety valve has certain pressure limit, and automatically overvoltage emptying has guaranteed the safe operation of device.
(4) conversion per pass of CO reaches 65%, C5 +Selectively be not less than 74%.
Claims (10)
1. constant-temperature heat exchanging device, it is characterized in that: this constant-temperature heat exchanging device comprises heater, reactor, sleeve pipe and water tank, described reactor is positioned at sleeve pipe; Described heater is connected the bottom of this reactor and sleeve pipe, be provided with flue gas duct and unstripped gas pipeline in this heater, the inlet of this flue gas duct is opened in the top of heater, the outlet of flue gas duct is opened in the bottom of heater, the entrance and exit of this unstripped gas pipeline is opened in respectively on the wall of heater, wherein, the outlet of the unstripped gas pipeline of heater is connected with the unstripped gas inlet of reactor bottom setting; Also offer recirculated water inlet and circulating water outlet on the wall of heater, the circulating water outlet on the wall of this heater is connected with described sleeve pipe, and is connected with space between reactor and the sleeve pipe; The circulating water outlet that the upper end of described water tank one end and sleeve pipe is provided with is connected, and the recirculated water on the wall of the other end and heater enters the mouth and is connected.
2. constant-temperature heat exchanging device as claimed in claim 1 is characterized in that: the bottom of described reactor also is connected with product gatherer and product groove successively.
3. constant-temperature heat exchanging device as claimed in claim 2 is characterized in that: the top of described reactor also is connected with condenser and three phase separator successively.
4. constant-temperature heat exchanging device as claimed in claim 1 is characterized in that: described water tank is provided with liquid level gauge and turnover valve.
5. constant-temperature heat exchanging device as claimed in claim 4 is characterized in that: also be provided with explosion-proof valve on the described water tank.
6. constant-temperature heat exchanging device as claimed in claim 1 is characterized in that: described water tank is provided with the pipeloop that communicates with the recirculated water inlet offered on the heater, and this pipeloop be and two kinds of the automatic pipeloop of company and forced circulation pipelines.
7. constant-temperature heat exchanging device as claimed in claim 6 is characterized in that: also be provided with high-pressure circulation pump on the forced circulation pipeline that is provided with between described water tank and the circulating water pipeline inlet.
8. constant-temperature heat exchanging device as claimed in claim 1, it is characterized in that: installing is arranged with the air delivering pipeline of at least 1 transferring raw material gas in the reactor of described constant-temperature heat exchanging device, and the unstripped gas of the air delivering pipeline in the unstripped gas pipeline in the described heater and this reactor by the reactor bottom setting enters the mouth and be connected.
9. constant-temperature heat exchanging device as claimed in claim 1 is characterized in that: the flue gas duct of establishing in the described heater is the up pipeline of helical form, and the unstripped gas pipeline of establishing in this heater is a spiral pipe.
10. as each described constant-temperature heat exchanging device of claim 1-9, wherein, described reactor is single tube or tubulation fixed bed, fluid bed or slurry attitude bed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720149590XU CN201055771Y (en) | 2007-06-13 | 2007-06-13 | Constant temperature heat-exchanger apparatus suitable for strong exothermic reaction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720149590XU CN201055771Y (en) | 2007-06-13 | 2007-06-13 | Constant temperature heat-exchanger apparatus suitable for strong exothermic reaction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201055771Y true CN201055771Y (en) | 2008-05-07 |
Family
ID=39424617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720149590XU Expired - Lifetime CN201055771Y (en) | 2007-06-13 | 2007-06-13 | Constant temperature heat-exchanger apparatus suitable for strong exothermic reaction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201055771Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102974288A (en) * | 2012-12-18 | 2013-03-20 | 中昊晨光化工研究院有限公司 | Reaction device capable of automatically stabilizing temperature |
| CN110181749A (en) * | 2019-06-26 | 2019-08-30 | 长虹美菱股份有限公司 | A kind of refrigerator ice cabinet urethane raw thermostatic control system |
-
2007
- 2007-06-13 CN CNU200720149590XU patent/CN201055771Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102974288A (en) * | 2012-12-18 | 2013-03-20 | 中昊晨光化工研究院有限公司 | Reaction device capable of automatically stabilizing temperature |
| CN102974288B (en) * | 2012-12-18 | 2015-03-11 | 中昊晨光化工研究院有限公司 | Reaction device capable of automatically stabilizing temperature |
| CN110181749A (en) * | 2019-06-26 | 2019-08-30 | 长虹美菱股份有限公司 | A kind of refrigerator ice cabinet urethane raw thermostatic control system |
| CN110181749B (en) * | 2019-06-26 | 2024-01-30 | 长虹美菱股份有限公司 | Polyurethane raw material constant temperature control system for refrigerator and freezer |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080507 |