CN201993026U - Anti-clogging device for preventing salt from clogging heat exchanger tube pass - Google Patents
Anti-clogging device for preventing salt from clogging heat exchanger tube pass Download PDFInfo
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- CN201993026U CN201993026U CN2010206742464U CN201020674246U CN201993026U CN 201993026 U CN201993026 U CN 201993026U CN 2010206742464 U CN2010206742464 U CN 2010206742464U CN 201020674246 U CN201020674246 U CN 201020674246U CN 201993026 U CN201993026 U CN 201993026U
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Abstract
The utility model relates to an anti-clogging device for preventing salt from clogging a heat exchanger tube pass. A heat exchanger comprises a heat exchanger tube pass and a heat exchanger shell pass, wherein the heat exchanger tube pass is used for causing materials to flow and pass and heating the materials through a heating medium, and the heat exchanger shell pass is used for causing the heating medium to flow and pass and causing the heating medium to heat the materials. The materials contain salt and water and are supplied by upstream equipment, and the materials flow through the heat exchanger tube pass to enter first downstream equipment positioned at the down stream of the heat exchanger tube pass; when the materials are heated in the heat exchanger tube pass and is converted from the subcritical state of water the supercritical state of water, the salt is separated out from the materials. The anti-clogging device is characterized in that the anti-clogging device is arranged between the upstream equipment and the first downstream equipment and is used for changing the flow direction of the materials in the heat exchanger tube pass at regular intervals, therefore changing the separation position of the salt in the heat exchanger tube pass. The anti-clogging device can be operated on line for simplifying the process operation procedures, so the continuous operation of the materials and the continuous running of the heat exchanger and the upstream and downstream equipment thereof are ensured.
Description
Technical field
The utility model relates to a kind of device that prevents the material blocking pipeline, more specifically, relates to a kind of preventing clogging up device that is used to prevent salt obstruction heat exchanger tube side.
Background technology
In the technology that coal is gasified with supercritical water, the material that comprises salt (in the carbonaceous materials such as catalyst and coal water-soluble material) and water that usually needs to be in the subcritical state of water feeds in the reactor to carry out gasification reaction with carbonaceous materials such as coals after being preheated to the supercriticality of water again.This preheating is generally carried out in heat exchanger.Employed heat exchanger can be anyly to make the heat exchanger of cold fluid and hot fluid indirect heat exchange, for example tubular heat exchanger, finned heat exchanger or the like by solid walls.This class heat exchanger can have tube side and shell side, and cold fluid and hot fluid is respectively walked a journey.Described tube side and shell side all can be one way or multipass.This class heat exchanger comprises at least one, preferred much pipelines of root parallel arranged, and the shell that surrounds these pipelines.Wherein one logistics flows through from these pipelines, and the space in the pipeline can be called as tube side, and another burst logistics flows through from the space between these pipelines and the shell (this space is called as shell side), and two bursts of logistics are carried out heat exchange by duct wall.Be preheated in the process of supercriticality of water at the material that uses heat exchanger will comprise coal and salt, because this material flows through in the heat exchanger tube side and heated by the heat medium the heat exchanger shell pass while flowing, so material certain position in tube side can take place from the transformation to the supercriticality of water of the subcritical state of water.Water-soluble salts substances owing to being soluble in subcritical water, salts substances water-soluble in the carbonaceous materials such as catalyst and coal is insoluble in supercritical water, so can be separated out fast from material.Can not cause too big problem in the phenomenon that this class salts out other thicker pipeline in whole technology, but in order to improve the heat exchange efficiency of heat exchanger, the thinner pipeline that the employed pipeline of heat exchanger tube side is normally much parallel, and the salt that a certain position of material in the heat exchanger tube side continues to separate out must stop up the heat exchanger tube side, and this is the huge difficult problem of puzzlement this area.
In order to solve this technical problem, patent JP02806085 discloses and has used by cylinder and the reactor formed with the piston of this cylinder coupling, make piston motion repeatedly in cylinder, realize of the transformation of the subcritical state of fluid by the pressure in the control reactor to supercriticality, and then periodically make material finish reaction, make the salt of separating out can access cleaning timely; Patent CN101698517 discloses a kind of the have super critical water treatment system of obstruction clearing function and the method for cleaning of obstruction thereof, it has utilized the main equipment of original super critical water treatment system, by adding pressure difference transmitter and valve, realize with the water that adds pipeline being washed after the pipeline blockage, and then reach the purpose of clearing up tamper, solved blocking problem.As seen, what prior art provided all is after above-mentioned pipeline blockage, how to clear up the technical scheme of tamper.Yet the scheme of prior art need stop reaction system clearing up tamper, and this forces reaction not carry out continuously.
The content of utility model
In order to solve the problems of the technologies described above, the utility model provides a kind of and has been used to prevent that salt from stopping up the preventing clogging up device of heat exchanger tube side, and described heat exchanger comprises: be used to make Flow of Goods and Materials by and the heat exchanger tube side of heated medium heating and being used to make heat medium flow by and heat the heat exchanger shell pass of described material; Described material is by the upstream equipment supply, flows through the heat exchanger tube side and enters first upstream device that is positioned at hot organ pipe journey downstream; When described material in described heat exchanger tube side, be heated and by the subcritical state of water when the supercriticality of water changes, described salt is separated out from described material; It is characterized in that described preventing clogging up device is arranged between the described upstream equipment and first upstream device, be used for changing at regular intervals the flow direction of material, in described heat exchanger tube side, separate out the position thereby change described salt at described heat exchanger tube side.
Preferably, described preventing clogging up device is at least two sections pipelines that are provided with valve.
Preferably, described first upstream device is a reactor, and is used at least a portion from the reacting rear material of this reactor as described heat medium.
Preferably, flow direction and described material the flow direction in heater tube side of described heat medium in heat exchanger shell pass is adverse current or cross-flow.
Have following advantage according to preventing clogging up device of the present utility model:
Need not as the conventional heat exchanger tube side obstruction method that prevents, heat exchanger is stopped or disengaging upstream and downstream equipment, and then feeding adds the salt (being the off-line cleaning) that washing fluid takes flushing line to accumulate in the heat exchanger somewhere with removing, the utility model is by being provided with the flow direction prevent that device that salt stops up can online periodic variation material between the described upstream equipment and first upstream device, salt out the position but also make the salt of having separated out to have an opportunity to contact and it is dissolved once more and/or washed away thereby change, and to be not to treat to solve blocking problem again after salt has stopped up pipeline by material with subcritical water.The utility model need not to utilize in addition the washing fluid that adds, and has omitted and has cleaned the step of block system, thereby simplified the technological operation program.
According to the position of separating out of the online change salt of preventing clogging up device of the present utility model, when moving, system equipment can prevent that promptly salt from stopping up, this has guaranteed the continuous operation of material and the continuous running of heat exchanger and upstream and downstream equipment thereof.
Description of drawings
The utility model is described below with reference to accompanying drawings by way of example, in the accompanying drawing:
Fig. 1 is the schematic diagram according to an embodiment of preventing clogging up device of the present utility model; And
Fig. 2 is the schematic diagram according to another embodiment of preventing clogging up device of the present utility model.
It should be understood that accompanying drawing only is illustrative, does not plan to limit by any way scope of the present utility model.
The specific embodiment
Material in the utility model comprises Yan Heshui, also can comprise coal dust.Wherein said salt comprises alkali metal salt or alkali salt.Described material enters first upstream device that is positioned at the heat exchanger downstream by the upstream equipment supply of heat exchanger behind the heat exchanger of flowing through.Unless independent statement is arranged in addition, described herein upstream and downstream is that the flow direction with described material is that benchmark is determined.Wherein said upstream equipment can be a pump.Described first upstream device can be a reactor.Heat exchanger in the utility model comprise be used to make Flow of Goods and Materials by and the heat exchanger tube side of heated medium heating and being used to make heat medium flow by and heat the heat exchanger shell pass of described material.Wherein said heat medium can also can come the reacted material of autoreactor from independent heat medium supply equipment.The subcritical state of wherein said water is meant: temperature is more than 100 ℃ and in the critical-temperature of water below 374 ℃, and pressure is in liquid pressure for still making water; The supercriticality of described water is meant: temperature is higher than 374 ℃ of the critical-temperatures of water and the state that pressure is higher than the critical pressure 22.1MPa of water.Wherein said heat exchanger tube side comprises at least one, preferred a lot of root pipelines.
As previously mentioned, material flows through in the heat exchanger tube side and is heated by the heat medium the heat exchanger shell pass while flowing, so material certain position in tube side can take place from the transformation to the supercriticality of water of the subcritical state of water, this transformation causes separating out of salt, and the continuing to separate out of salt must be stopped up the heat exchanger tube side.For the salt that prevents to separate out stops up the heat exchanger tube side, the measure that the utility model is taked is to change described salt at regular intervals to separate out the position in described heat exchanger tube side.Wherein said certain hour is constant or variable.Described certain hour also is less than and preferred salt of significantly separating out when not taking method of the present utility model stops up the time that the heat exchanger tube side is spent fully.In concrete practice, those skilled in the art are easy to record when not taking method of the present utility model the salt of separating out according to known technology in employed concrete heat exchanger and stop up the time that the heat exchanger tube side is spent fully.
For simplicity, as shown in Figure 1, illustrate with the straight tube single-pass exchanger that a heat exchange pipeline is only arranged.The arrangement of preventing clogging up device when Fig. 1 shows and is the straight tube single-pass exchanger according to heat exchanger of the present utility model.Described material is by upstream equipment (such as pump) supply, and the heat exchanger tube side of flowing through is laggard goes into first upstream device (such as reactor).The first pipeline P1 that is provided with the first valve a1 is between the first end M of upstream equipment and heat exchanger tube side, and the second pipeline P2 that is provided with the second valve a2 is between the second end N and first upstream device inlet of heat exchanger tube side.Also comprise the 3rd pipeline P3 that is provided with the 3rd valve b1 and the 4th pipeline P4 that is provided with the 4th valve b2.Wherein, the end A of the 3rd pipeline P3 be communicated with the first pipeline P1 and connection place between the upstream equipment and the first valve a1, the other end C of the 3rd pipeline P3 be communicated with the second pipeline P2 and connection place between the heat exchanger second end N and the second valve a2.Wherein, the end B of the 4th pipeline P4 be communicated with the first pipeline P1 and connection place between the first end M of the first valve a1 and heat exchanger tube side, the other end D of the 4th pipeline P4 be communicated with the second pipeline P2 and connection place between the second valve a2, first upstream device inlet.During use, when opening the first valve a1 and the second valve a2 and closing the 3rd valve b1 and the 4th valve b2, material is flowed to the second end N of heat exchanger tube side by the first end M of heat exchanger tube side; And when opening the 3rd valve b1 and the 4th valve b2 and closing the first valve a1 and the second valve a2, the flow direction of material changes over the first end M that is flowed to the heat exchanger tube side by the second end N of heat exchanger tube side.
By the operation of above duct arrangement and valve, can realize the change of flow direction in the heat exchanger tube side.In specific implementation process, when the amount of separating out of salt is not stopped up tube side as yet, by by-pass valve control in the manner described above at regular intervals, can change the flow direction of described material in the heat exchanger tube side, make the salt of having separated out when not stopping up the heat exchanger tube side as yet, just can have an opportunity to contact and it is dissolved once more and/or washed away, can prevent effectively that salt from a bit continuing to separate out and block the heat exchanger tube side in place at certain by material with subcritical water.
The said change flow direction of this paper is promptly put upside down flow direction.For example the script material flows to second end from first end of heat exchanger tube side, changes over from second end of heat exchanger tube side and flows to first end, and vice versa.The benefit of doing like this is not only to be to make the position of separating out of salt to change, but also make the salt of having separated out can have an opportunity to contact with subcritical water and it is dissolved once more and/or washed away by material, can prevent effectively that salt from a bit continuing to separate out and block the heat exchanger tube side in place at certain.
In a preferred embodiment, described first upstream device is a reactor, and uses at least a portion from the reacting rear material of this reactor as described heat medium, and this can make full use of the waste heat of reacting rear material.Described heat medium in heat exchanger shell pass flow direction and the relation between the flow direction of described material in the heater tube side can be following current, adverse current, baffling or cross-flow, preferred adverse current or cross-flow are to improve heat exchange efficiency.
In a kind of preferred embodiment of the present utility model, with at least a portion of reacting rear material be used as described heat medium and make the flow direction of described material and the flow direction of this heat medium between be counter-current relationship, this embodiment can realize by the configuration of following pipeline and valve, with reference to Fig. 2, be only to have the single-pass exchanger of a straight tube to illustrate the arrangement of preventing clogging up device of the present utility model with heat exchanger still: the first pipeline P1 that is provided with the first valve a1 is between the first end M of upstream equipment and heat exchanger tube side, and the second pipeline P2 that is provided with the second valve a2 is between the second end N and reactor inlet of heat exchanger tube side.Also comprise the 3rd pipeline P3 that is provided with the 3rd valve b1 and the 4th pipeline P4 that is provided with the 4th valve b2.Wherein, the end A of the 3rd pipeline P3 be communicated with the first pipeline P1 and connection place between the upstream equipment and the first valve a1, the other end C of the 3rd pipeline P3 be communicated with the second pipeline P2 and connection place between the heat exchanger second end N and the second valve a2.Wherein, the end B of the 4th pipeline P4 be communicated with the first pipeline P1 and connection place between the first end M of the first valve a1 and heat exchanger tube side, the other end D of the 4th pipeline P4 be communicated with the second pipeline P2 and connection place between the second valve a2 and reactor inlet.Described preventing clogging up device also comprises: be provided with the 5th pipeline P5 of the 5th valve a3, be provided with the 6th pipeline P6 of the 6th valve a4, be provided with the 7th pipeline P7 of the 7th valve b3 and be provided with the 8th pipeline P8 of the 8th valve b4; Wherein, the 5th pipeline P5 is between the first end R of reactor outlet and heat exchanger shell pass, and the 6th pipeline P6 is at the second end S of heat exchanger shell pass and be in for heat exchanger shell pass between second upstream device in downstream; Wherein, the end T of the 7th pipeline P7 be communicated with the 5th pipeline P5 and connection place between reactor outlet and the 5th valve a3, the other end U of the 7th pipeline P7 be communicated with the 6th pipeline P6 and connection place between the second end S of the 6th valve a4 and heat exchanger shell pass; Wherein, the end V of the 8th pipeline P8 be communicated with the 5th pipeline P5 and connection place between the first end R of the 5th valve a3 and heat exchanger shell pass, the other end W of the 8th pipeline P8 be communicated with the 6th pipeline P6 and connection place between the 6th valve a4 and described second upstream device.During use, when opening the first valve a1, the second valve a2, the 5th valve a3 and the 6th valve a4 and closing the 3rd valve b1, the 4th valve b2, the 7th valve b3 and the 8th valve b4, material flows to the second end N of heat exchanger tube side and reacting rear material by the first end M of heat exchanger tube side and flows to the second end S from the first end R of heat exchanger shell pass; And when opening the 3rd valve b1, the 4th valve b2, the 7th valve b3 and the 8th valve b4 and closing the first valve a1, the second valve a2, the 5th valve a3 and the 6th valve a4, the second end N that the flow direction of material changes over by the heat exchanger tube side flows to first end M of heat exchanger tube side and reacting rear material flows to heat exchanger shell pass from the second end S of heat exchanger shell pass the first end R.
The utility model utilization is served as heat medium through the shell side that the reacted material of first upstream device (for example reactor) returns heat exchanger, and by temperature controlling to reacting rear material, can change salt and in described heat exchanger tube side, separate out the position, reached the coupling utilization of system capacity simultaneously, reduced cost.Second upstream device described in the utility model is meant any equipment that is in the downstream with respect to heat exchanger shell pass, for example can be solid and gas/solid-liquid/gas fractionation unit.In addition, those skilled in the art knows the form and the effect of valve, does not repeat them here.Above-described valve can be the valve of any kind.
Though below only illustrate preferred implementation of the present utility model with the straight tube single-pass exchanger that a pipeline is arranged, but it will be appreciated by those skilled in the art that, the technical solution of the utility model obviously also can be applicable to the multipass exchanger with a lot of root heat exchange pipelines, also can adopt the heat exchanger (for example bend pipe heat exchanger) of other form.In addition, under the situation of the protection domain that does not break away from the utility model claims, can make amendment or change the foregoing description.The scope of appended claims should not be confined to the explanation of the preferred embodiment that comprises at this, but has contained the literal meaning that falls into claim or all embodiment in the equivalents.
Claims (6)
1. one kind is used to prevent that salt from stopping up the preventing clogging up device of heat exchanger tube side, and described heat exchanger comprises: be used to make Flow of Goods and Materials by and the heat exchanger tube side of heated medium heating and being used to make heat medium flow by and heat the heat exchanger shell pass of described material;
Described material is by the upstream equipment supply, flows through the heat exchanger tube side and enters first upstream device that is positioned at heat exchanger tube side downstream;
When described material in described heat exchanger tube side, be heated and by the subcritical state of water when the supercriticality of water changes, described salt is separated out from described material;
It is characterized in that described preventing clogging up device is arranged between the described upstream equipment and first upstream device, be used for changing at regular intervals the flow direction of material, in described heat exchanger tube side, separate out the position thereby change described salt at described heat exchanger tube side.
2. preventing clogging up device as claimed in claim 1 is characterized in that, described preventing clogging up device is at least two sections pipelines that are provided with valve.
3. preventing clogging up device as claimed in claim 2 is characterized in that, described preventing clogging up device is provided with in the following manner:
First pipeline (P1) that is provided with first valve (a1) is positioned between first end (M) of upstream equipment and heat exchanger tube side, and second pipeline (P2) that is provided with second valve (a2) is positioned between second end (N) and first upstream device inlet of heat exchanger tube side;
Also comprise the 3rd pipeline (P3) that is provided with the 3rd valve (b1) and the 4th pipeline (P4) that is provided with the 4th valve (b2);
Wherein, one end (A) of the 3rd pipeline is communicated with first pipeline (P1) and connection place is positioned between described upstream equipment and first valve (a1), and the other end of the 3rd pipeline (C) is communicated with second pipeline (P2) and connection place is positioned between second end (N) and second valve (a2) of heat exchanger tube side;
Wherein, one end (B) of the 4th pipeline is communicated with first pipeline (P1) and connection place is positioned between first end (M) of first valve (a1) and heat exchanger tube side, and the other end of the 4th pipeline (D) is communicated with second pipeline (P2) and connection place is positioned between second valve (a2) and first upstream device inlet;
Wherein, when opening first valve (a1) and second valve (a2) and closing the 3rd valve (b1) and the 4th valve (b2), material is flowed to second end (N) of heat exchanger tube side by first end (M) of heat exchanger tube side; And when opening the 3rd valve (b1) and the 4th valve (b2) and closing first valve (a1) and second valve (a2), the flow direction of material changes over first end (M) that is flowed to the heat exchanger tube side by second end (N) of heat exchanger tube side.
4. preventing clogging up device as claimed in claim 1 is characterized in that, described first upstream device is a reactor, and is used at least a portion from the reacting rear material of this reactor as described heat medium.
5. preventing clogging up device as claimed in claim 1 is characterized in that, flow direction and described material the flow direction in heater tube side of described heat medium in heat exchanger shell pass is adverse current or cross-flow.
6. preventing clogging up device as claimed in claim 3 is characterized in that, described preventing clogging up device also comprises:
Be provided with the 5th pipeline (P5) of the 5th valve (a3), be provided with the 6th pipeline (P6) of the 6th valve (a4), be provided with the 7th pipeline (P7) of the 7th valve (b3) and be provided with the 8th pipeline (P8) of the 8th valve (b4);
Wherein, the 5th pipeline (P5) is positioned between first end (R) of reactor outlet and heat exchanger shell pass, and the 6th pipeline (P6) is positioned at second end (S) of heat exchanger shell pass and is in for heat exchanger shell pass between second upstream device in downstream;
Wherein, one end (T) of the 7th pipeline (P7) is communicated with the 5th pipeline (P5) and connection place is positioned between reactor outlet and the 5th valve (a3), and the other end (U) of the 7th pipeline (P7) is communicated with the 6th pipeline (P6) and connection place is positioned between second end (S) of the 6th valve (a4) and heat exchanger shell pass;
Wherein, one end (V) of the 8th pipeline (P8) is communicated with the 5th pipeline (P5) and connection place is positioned between first end (R) of the 5th valve (a3) and heat exchanger shell pass, the other end (W) of the 8th pipeline (P8) is communicated with the 6th pipeline (P6) and connection place is positioned between the 6th valve (a4) and described second upstream device
Wherein, when opening first valve (a1), second valve (a2), the 5th valve (a3) and the 6th valve (a4) and close the 3rd valve (b1), the 4th valve (b2), the 7th valve (b3) and during the 8th valve (b4), material flows to second end (N) of heat exchanger tube side and reacting rear material by first end (M) of heat exchanger tube side and flows to second end (S) from first end (R) of heat exchanger shell pass; And when opening the 3rd valve (b1), the 4th valve (b2), the 7th valve (b3) and the 8th valve (b4) and closing first valve (a1), second valve (a2), the 5th valve (a3) and during the 6th valve (a4), second end (N) that the flow direction of material changes over by the heat exchanger tube side flows to first end (M) of heat exchanger tube side and reacting rear material flows to heat exchanger shell pass from second end (S) of heat exchanger shell pass first end (R).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206742464U CN201993026U (en) | 2010-12-22 | 2010-12-22 | Anti-clogging device for preventing salt from clogging heat exchanger tube pass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206742464U CN201993026U (en) | 2010-12-22 | 2010-12-22 | Anti-clogging device for preventing salt from clogging heat exchanger tube pass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201993026U true CN201993026U (en) | 2011-09-28 |
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ID=44669512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206742464U Expired - Lifetime CN201993026U (en) | 2010-12-22 | 2010-12-22 | Anti-clogging device for preventing salt from clogging heat exchanger tube pass |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201993026U (en) |
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2010
- 2010-12-22 CN CN2010206742464U patent/CN201993026U/en not_active Expired - Lifetime
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180105 Address after: 065001 Hebei city of Langfang province C New Austrian Science Park Economic Development Zone Xinyuan host city Patentee after: Environmental Protection Technology Co., Ltd. Address before: The 065001 Hebei economic and Technological Development Zone of Langfang Huaxiang new Austrian Science and Technology Park in the Southern District of B City Patentee before: ENN SCIENCE & TECHNOLOGY DEVELOPMENT Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110928 |