CN211367185U - Processing system of coal gasifier buck - Google Patents
Processing system of coal gasifier buck Download PDFInfo
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- CN211367185U CN211367185U CN201922017734.1U CN201922017734U CN211367185U CN 211367185 U CN211367185 U CN 211367185U CN 201922017734 U CN201922017734 U CN 201922017734U CN 211367185 U CN211367185 U CN 211367185U
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Abstract
The utility model discloses a processing system of coal gasifier buck, include: the suspended matter filtering device is used for filtering suspended matters in the grey water to enable the grey water to become low suspended matter grey water; the hard ion adsorption device is used for adsorbing hard ions in the low-suspended matter grey water to enable the low-suspended matter grey water to become low-hardness grey water; the regeneration device is used for introducing regeneration liquid into the hard ion adsorption device to enable hard ions adsorbed on the hard ion adsorption device to be separated from the regeneration liquid to form regeneration waste liquid and accommodating the regeneration waste liquid discharged by the hard ion adsorption device; and the hard ion recovery device is used for recovering hard ions in the regeneration waste liquid. The treatment system has low treatment cost, can effectively solve the problem that a water circulation pipeline of the coal gasifier is easy to scale and block, and realizes the recycling of calcium ions, magnesium ions and the like in the grey water.
Description
Technical Field
The utility model relates to a coal gasifier technical field especially relates to a processing system of coal gasifier buck.
Background
The water circulation route of the existing coal gasifier is as follows: chilling water at the bottom of a chilling chamber of the coal gasifier and synthetic gas washing water at the bottom of a washing tower enter a flash evaporation system through a black water pipeline to be subjected to flash evaporation cooling, and then the water is sent to a black water settling tank, ash residues in the black water are flocculated and settled at the bottom of the black water settling tank, ash water is formed at the top of the black water settling tank, and the ash water enters an ash water tank through an overflow port at the top of the black water settling tank and is used as circulating water for recycling.
The water circulation pipeline of the coal gasifier with the structure is easy to be scaled and blocked, so that the running safety of the coal gasifier is reduced and even the coal gasifier can not run normally
In view of the above, how to prevent the scale formation and blockage of the water circulation pipeline of the coal gasifier is a technical problem to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a processing system of coal gasifier buck, include:
the suspended matter filtering device is used for filtering suspended matters in the grey water to enable the grey water to become low suspended matter grey water;
the hard ion adsorption device is used for adsorbing hard ions in the low-suspended matter grey water to enable the low-suspended matter grey water to become low-hardness grey water;
the regeneration device is used for introducing regeneration liquid into the hard ion adsorption device to enable hard ions adsorbed on the hard ion adsorption device to be separated from the regeneration liquid to form regeneration waste liquid and accommodating the regeneration waste liquid discharged by the hard ion adsorption device;
and the hard ion recovery device is used for recovering hard ions in the regeneration waste liquid.
When setting up as above, the buck filters the suspended solid through suspended solid filter equipment earlier, adsorbs through hard ion adsorption equipment again and falls hard ion, and later can regard as coal gasifier's circulating water to use, because when using as the circulating water, suspended solid concentration and hardness are all lower, therefore can effectively solve coal gasifier's the easy problem of scale deposit jam of water circulation pipeline.
And, when setting up as above, the hard ion in the ash is finally retrieved through hard ion recovery unit, like this, can promote economic benefits on the one hand, and on the other hand, can avoid the harmful effects that hard ion is arranged outward and is caused the environment.
And, when setting up as above, the hard ion in the grey water is removed through the adsorption mode, and this kind of mode is more environmental protection and the technology is simpler than adopting chemical precipitation mode to carry out hard ion and remove. Furthermore, the regeneration device can be used for introducing the regeneration liquid into the hard ion adsorption device, so that the adsorption function of the hard ion adsorption device which is saturated by adsorption can be recovered again, and the hard ion adsorption device can be repeatedly used, thereby the treatment cost is low.
Further, the hard ion recovery device includes a calcium ion recovery assembly, the calcium ion recovery assembly including:
the calcium removal reactor is filled with carbonate which is used for reacting with calcium ions in the regeneration waste liquid;
the calcium removal clarification tank is used for clarifying the regeneration waste liquid discharged by the calcium removal reactor;
and the calcium removal filter is used for filtering the regeneration waste liquid discharged from the bottom of the calcium removal clarification tank so as to separate calcium carbonate from the regeneration waste liquid.
Furthermore, the calcium removal filter is communicated with the top of the calcium removal clarification tank, so that the regeneration waste liquid discharged by the calcium removal filter is introduced into the calcium removal clarification tank.
Further, the hard ion recovery device further comprises a magnesium ion recovery assembly, and the magnesium ion recovery assembly comprises:
a magnesium removal reactor, wherein phosphate or phosphoric acid for reacting with magnesium ions in the regeneration waste liquid is filled in the magnesium removal reactor;
the magnesium removal clarification tank is used for clarifying the regeneration waste liquid discharged by the magnesium removal reactor;
and the magnesium removal filter is used for filtering the regeneration waste liquid discharged from the bottom of the magnesium removal clarification tank so as to separate magnesium ammonium phosphate from the regeneration waste liquid.
Furthermore, the magnesium removal filter is communicated with the top of the magnesium removal clarification tank, so that the regenerated waste liquid discharged by the magnesium removal filter is introduced into the magnesium removal clarification tank.
Further, the magnesium removal reactor is communicated with the top of the calcium removal filter, so that the regeneration waste liquid at the top of the calcium removal filter is introduced into the magnesium removal reactor.
Furthermore, the top of the magnesium removal clarification tank is communicated with the regeneration device, so that the regeneration waste liquid at the top of the magnesium removal clarification tank is introduced into the regeneration device.
Further, the suspended matter filtering device is a quartz sand filtering device or a ceramic membrane filtering device.
Furthermore, the suspended matter concentration monitoring device is used for monitoring the suspended matter concentration of the low suspended matter grey water.
Further, the device also comprises a hardness monitoring device for monitoring the hardness of the low-hardness grey water.
Drawings
FIG. 1 is a schematic diagram of an embodiment of a system for treating ash water from a coal gasifier;
fig. 2 is a detailed schematic diagram of the hard ion recovery device in fig. 1.
The reference numerals are explained below:
1 suspended matter filtering device, A first grey water inlet, B first grey water outlet;
2, a hard ion adsorption device, a second grey water inlet, a second grey water outlet, a regeneration liquid inlet and a first regeneration waste liquid outlet;
3, a regeneration device, a G regeneration liquid outlet, an H regeneration waste liquid inlet, an I second regeneration waste liquid outlet, a J regeneration liquid filling port and a K regeneration waste liquid return port;
4 hard ion recovery device, 41 decalcification reactor, 42 decalcification tank, 43 decalcification filter, 44 demagging reactor, 45 demagging tank, 46 demagging filter.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following provides a detailed description of the technical solution of the present invention with reference to the accompanying drawings.
As shown in the figure, the system for treating the grey water of the coal gasifier comprises: suspended matter filtering device 1, hard ion adsorption device 2, regeneration device 3 and hard ion recovery device 4.
The suspended matter filtering device 1 is used for filtering suspended matters in the grey water to enable the grey water to become low suspended matter grey water. Specifically, the suspended matter filtering device 1 is provided with a first grey water inlet A and a first grey water outlet B, and the first grey water inlet A is communicated with an overflow port at the top of a black water settling tank of the coal gasifier, so that grey water flows into the suspended matter filtering device 1 from the black water settling tank. After the grey water flows through the suspended matter filtering device 1, suspended matters are retained in the suspended matter filtering device 1, and the grey water with low suspended matters is discharged from a first grey water outlet B of the suspended matter filtering device 1.
More specifically, the suspended matter filtering device 1 may be a quartz sand filtering device or a ceramic membrane filtering device, and both filtering devices can efficiently filter suspended matters in the gray water.
The hard ion adsorption device 2 is used for adsorbing hard ions (including calcium ions, magnesium ions and the like) in the low-suspended-matter grey water to enable the low-suspended-matter grey water to become low-hardness grey water. Specifically, the hard ion adsorption device 2 is provided with a second grey water inlet C and a second grey water outlet D, and the second grey water inlet C is communicated with the first grey water outlet B, so that the low-suspended solid grey water flows into the hard ion adsorption device 2 from the suspended solid filtering device 1. After the low-suspended-matter grey water flows through the hard ion adsorption device 2, hard ions are retained in the hard ion adsorption device 2, and low-hardness grey water is discharged from the second grey water outlet D and is discharged into a grey water tank of the coal gasification furnace, so that the low-hardness grey water is used as circulating water of the coal gasification furnace again.
More specifically, the hard ion adsorption device 2 is filled with a high-temperature-resistant adsorption resin, and the hard ions in the low-suspended ash water are adsorbed by the adsorption resin.
The regeneration device 3 is used for introducing regeneration liquid into the hard ion adsorption device 2, so that hard ions adsorbed on the hard ion adsorption device 2 are separated from the regeneration liquid, and the regeneration liquid becomes regeneration waste liquid. Specifically, the regeneration liquid can be sodium chloride or potassium chloride or hydrochloric acid, and sodium chloride is preferred. Specifically, the hard ion adsorption device 2 is provided with a regeneration liquid inlet E, the regeneration device 3 is provided with a regeneration liquid outlet G, and the regeneration liquid outlet G is communicated with the regeneration liquid inlet E, so that the regeneration liquid in the regeneration device 3 flows into the hard ion adsorption device 2.
The regeneration device 3 is also used for containing regeneration waste liquid discharged from the hard ion adsorption device 2. Specifically, the hard ion adsorption device 2 is provided with a first regenerated waste liquid outlet F, the regeneration device 3 is provided with a regenerated waste liquid inlet H, and the first regenerated waste liquid outlet F is communicated with the regenerated waste liquid inlet H, so that the regenerated waste liquid in the hard ion adsorption device 2 flows into the regeneration device 3.
The hard ion recovery device 4 is used for recovering hard ions in the regeneration waste liquid. Specifically, the regeneration device 3 is provided with a second regeneration waste liquid outlet I, and the hard ion recovery device 4 is communicated with the second regeneration waste liquid outlet I, so that the regeneration waste liquid in the regeneration device 3 flows into the hard ion recovery device 4.
More specifically, the regeneration device 3 is further provided with a regeneration liquid injection port J, and the regeneration liquid is replenished into the regeneration device 3 through the regeneration liquid injection port J. The regeneration device 3 is also provided with a regeneration waste liquid return opening K so that the regeneration waste liquid flows through the hard ion recovery device 4 and then returns to the regeneration device 3 to be reused as regeneration liquid, thus the liquid supplementing amount of the regeneration liquid can be reduced, and the grey water treatment cost is reduced.
When setting up as above, the buck filters the suspended solid through suspended solid filter equipment 1 earlier, adsorbs through hard ion adsorption equipment 2 again and falls hard ion, and later can regard as coal gasifier's circulating water to use, because when using as the circulating water, suspended solid concentration and hardness are all lower, therefore can effectively solve coal gasifier's the easy scale deposit problem of blockking up of water circulation pipeline.
And, when setting up as above, the hard ion in the ash is finally retrieved through hard ion recovery unit 4, like this, on the one hand can promote economic benefits, and on the other hand, can avoid the harmful effects that hard ion is arranged outward and is caused the environment.
And, when setting up as above, the hard ion in the grey water is removed through the adsorption mode, and this kind of mode is more environmental protection and the technology is simpler than adopting chemical precipitation mode to carry out hard ion and remove. Furthermore, the regeneration device 3 allows the hard ion adsorption device 2, which has been saturated by adsorption, to recover the adsorption function again by introducing the regeneration liquid into the hard ion adsorption device 2, and allows the hard ion adsorption device 2 to be reused, thereby reducing the processing cost.
As shown in fig. 2, the hard ion recovery device 4 specifically includes a calcium ion recovery unit and a magnesium ion recovery unit.
Specifically, the calcium ion recovery module includes a decalcifying reactor 41, a decalcifying clarifier 42, and a decalcifying filter 43.
Carbonate is charged into the calcium removal reactor 41, the regeneration waste liquid discharged from the regeneration apparatus 3 flows into the calcium removal reactor 41, and calcium ions contained in the regeneration waste liquid react with the carbonate to produce calcium carbonate. Specifically, the carbonate may be sodium carbonate, potassium carbonate, or the like. Preferably, the decalcification reactor 41 is provided with a stirring blade and a driving member for driving the stirring blade to rotate, and the reaction speed can be increased and the reaction completion can be promoted by stirring the reactant in the decalcification reactor 41 with the stirring blade. Preferably, the calcium removal reactor 42 is provided with a pH detection means for guiding the amount of carbonate added.
The decalcifying clarifier 42 is used for clarifying the regeneration waste liquid discharged from the decalcifying reactor 41. Specifically, the decalcification tank 42 is communicated with the decalcification reactor 41 through an electric pump, so that the regeneration waste liquid with calcium carbonate flows into the decalcification tank 42, after standing for a period of time, the calcium carbonate is deposited at the bottom of the decalcification tank 42, and the top of the decalcification tank 42 is the clarified regeneration waste liquid.
The calcium removal filter 43 is used for filtering the regeneration waste liquid discharged from the bottom of the calcium removal clarifier 42, a large amount of calcium carbonate is carried in the regeneration waste liquid discharged from the bottom of the calcium removal clarifier 42, and when the regeneration waste liquid flows through the calcium removal filter 43, the carried calcium carbonate is intercepted by the calcium removal filter 43, so that the recovery of calcium ions is realized.
In short, when the calcium ion recovery module is arranged as above, the regeneration waste liquid flows through the calcium removal reactor 41 first, so that calcium ions generate calcium carbonate; then, it flows through the calcium removal clarifier 42 to deposit calcium carbonate; then flows through the calcium removal filter 43, so that calcium carbonate is retained by the calcium removal filter 43, thereby achieving the recovery of calcium ions.
Preferably, as shown in fig. 2, the calcium removal filter 43 is communicated with the top of the calcium removal clarifier 42, and the regeneration waste liquid discharged from the calcium removal filter 43 (i.e., the regeneration waste liquid from which calcium carbonate is removed) is returned to the calcium removal clarifier 42.
Specifically, the magnesium ion recovery assembly includes a magnesium removal reactor 44, a magnesium removal clarifier 45, and a magnesium removal filter 46.
Phosphate or phosphoric acid is filled in the magnesium removal reactor 44, the regenerated waste liquid flows into the magnesium removal reactor 44, and magnesium ions contained in the regenerated waste liquid react with the phosphate or phosphoric acid to generate magnesium ammonium phosphate. Specifically, the phosphate may be sodium phosphate, potassium phosphate, or the like. Preferably, the demagging reactor 44 is provided with a stirring blade and a driving member for driving the stirring blade to rotate, and the stirring blade is used for stirring the reactant in the demagging reactor 44, so that the reaction speed can be increased and the reaction can be promoted to be complete. Preferably, the magnesium removal reactor 44 is provided with a pH detection means for guiding the amount of phosphate or phosphoric acid to be added.
The magnesium removal clarifier 45 is used for clarifying the regeneration waste liquid discharged from the magnesium removal reactor 44. Specifically, the magnesium removal clarifier 45 is communicated with the magnesium removal reactor 44 through an electric pump so that the regeneration waste liquid carrying magnesium ammonium phosphate flows into the magnesium removal clarifier 45, after the magnesium ammonium phosphate is kept still for a period of time, the magnesium ammonium phosphate is deposited at the bottom of the magnesium removal clarifier 45, and the top of the magnesium removal clarifier 45 is the clarified regeneration waste liquid.
The magnesium removal filter 46 is used for filtering the regeneration waste liquid discharged from the bottom of the magnesium removal clarifier 45, a large amount of magnesium ammonium phosphate is carried in the regeneration waste liquid discharged from the bottom of the magnesium removal clarifier 45, and when the regeneration waste liquid flows through the magnesium removal filter 46, the carried magnesium ammonium phosphate is intercepted by the magnesium removal filter 46, so that the recovery of magnesium ions is realized.
In short, when the magnesium ion recovery module is arranged as above, the regenerated waste liquid firstly flows through the magnesium removal reactor 44, so that magnesium ions contained in the regenerated waste liquid generate magnesium ammonium phosphate; then, the magnesium ammonium phosphate is deposited by flowing through a magnesium removal clarifier 45; and then passes through the magnesium removal filter 46 such that the magnesium ammonium carbonate is retained by the magnesium removal filter 46, thereby achieving recovery of magnesium ions.
Preferably, as shown in fig. 2, the magnesium removal filter 46 is connected to the top of the magnesium removal clarifier 45, and the regeneration waste liquid discharged from the magnesium removal filter 46 (i.e., the regeneration waste liquid from which magnesium ammonium phosphate is removed) is returned to the magnesium removal clarifier 46.
Preferably, as shown in fig. 2, the magnesium removal reactor 44 is communicated with the top of the calcium removal filter 43, and the clarified regeneration waste liquid at the top of the calcium removal filter 43 is passed into the magnesium removal reactor 44. Set up like this, the regeneration waste liquid flows through calcium ion recovery subassembly earlier, flows through magnesium ion recovery subassembly again, retrieves the calcium ion in the regeneration waste liquid earlier promptly, retrieves the magnesium ion in the regeneration waste liquid again, like this, does benefit to the rate of recovery that promotes calcium ion and magnesium ion. And, when so arranged, the regenerated waste liquid at the top of the magnesium removal clarifier 45 is substantially free of magnesium ions and calcium ions.
More preferably, as shown in fig. 2, the top of the magnesium removal clarifier 45 is communicated with the regeneration waste liquid return port K of the regeneration device 3, and the regeneration waste liquid at the top of the magnesium removal clarifier 45 is returned to the regeneration device 3, and since this part of the regeneration waste liquid contains substantially no magnesium ions and calcium ions, it can be recycled as the regeneration liquid, which is advantageous for further reducing the treatment cost.
Preferably, the treatment system comprises suspension concentration monitoring means (not shown) for monitoring the suspension concentration in the low-suspension grey water (grey water filtered by the suspension filtration unit 1), in order to facilitate monitoring of the filtration performance of the suspension filtration unit 1. The concentration of suspended matters in the low suspended matter ash water is preferably in the range of 5 mg/L-10 mg/L.
Preferably, the treatment system comprises grey water hardness monitoring means for monitoring the hardness of the low hardness grey water (grey water after adsorption by the hard ion adsorption means 2) so as to facilitate monitoring of the adsorption performance of the hard ion adsorption means 2. The hardness of the low-hardness grey water is preferably in the range of 50mg/L to 100 mg/L.
In conclusion, the treatment system for the ash water of the coal gasifier has the following technical effects:
(1) suspended matters in the ash water are removed in a filtering mode, hard ions in the ash water are removed in an adsorption mode, the ash water with low hardness and low suspended matter concentration is obtained, and the part of the ash water is used as circulating water of the coal gasifier, so that the problem of scaling and blockage of a water circulating pipeline of the coal gasifier is solved.
(2) The recovery of hard ions (including calcium ions and magnesium ions) in the ash water is realized, the economic benefit is improved, and the adverse effect of hard ion discharge on the environment is avoided.
The detailed description is given above on the treatment system of the ash water of the coal gasification furnace provided by the utility model. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (10)
1. A system for treating coal gasifier grey water comprising:
the suspended matter filtering device (1) is used for filtering suspended matters in the grey water to enable the grey water to become low suspended matter grey water;
the hard ion adsorption device (2) is used for adsorbing hard ions in the low-suspended matter grey water to enable the low-suspended matter grey water to become low-hardness grey water;
the regeneration device (3) is used for introducing regeneration liquid into the hard ion adsorption device (2) to enable hard ions adsorbed on the hard ion adsorption device (2) to be separated into the regeneration liquid to form regeneration waste liquid and accommodating the regeneration waste liquid discharged by the hard ion adsorption device (2);
and the hard ion recovery device (4) is used for recovering hard ions in the regeneration waste liquid.
2. The processing system according to claim 1, wherein the hard ion recovery device (4) comprises a calcium ion recovery assembly comprising:
a calcium removal reactor (41) filled with carbonate for reacting with calcium ions in the regeneration waste liquid;
a calcium removal clarifier (42) for clarifying the regeneration waste liquid discharged from the calcium removal reactor (41);
and the calcium removal filter (43) is used for filtering the regeneration waste liquid discharged from the bottom of the calcium removal clarification tank (42) so as to separate calcium carbonate from the regeneration waste liquid.
3. The treatment system according to claim 2, wherein the decalcifying filter (43) communicates with the top of the decalcifying and clarification tank (42) so that the regeneration effluent discharged from the decalcifying filter (43) is passed into the decalcifying and clarification tank (42).
4. The processing system according to claim 2, wherein the hard ion recovery device (4) further comprises a magnesium ion recovery assembly comprising:
a magnesium removal reactor (44) filled with phosphate or phosphoric acid for reacting with magnesium ions in the regeneration waste liquid;
a magnesium removal clarifier (45) for clarifying the regeneration waste liquid discharged from the magnesium removal reactor (44);
and the magnesium removal filter (46) is used for filtering the regeneration waste liquid discharged from the bottom of the magnesium removal clarification tank (45) so as to separate magnesium ammonium phosphate from the regeneration waste liquid.
5. A treatment system according to claim 4, wherein the magnesium removal filter (46) is in communication with the top of the magnesium removal clarifier (45) so that the regeneration effluent from the magnesium removal filter (46) is passed to the magnesium removal clarifier (45).
6. The treatment system according to claim 4, wherein the magnesium removal reactor (44) is in communication with the top of the calcium removal filter (43) such that the regeneration effluent at the top of the calcium removal filter (43) is passed to the magnesium removal reactor (44).
7. The treatment system according to claim 6, wherein the top of the magnesium removal clarifier (45) is in communication with the regeneration device (3) such that the regeneration waste liquid at the top of the magnesium removal clarifier (45) is passed to the regeneration device (3).
8. The treatment system according to any one of claims 1 to 7, wherein the suspension filtration device (1) is a quartz sand filtration device or a ceramic membrane filtration device.
9. A treatment system according to any of claims 1-7, further comprising a suspension concentration monitoring device for monitoring the suspension concentration of the low-suspension grey water.
10. A treatment system according to any of claims 1-7, further comprising hardness monitoring means for monitoring the hardness of the low hardness grey water.
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| CN201922017734.1U CN211367185U (en) | 2019-11-20 | 2019-11-20 | Processing system of coal gasifier buck |
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| CN201922017734.1U CN211367185U (en) | 2019-11-20 | 2019-11-20 | Processing system of coal gasifier buck |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114014465A (en) * | 2021-11-18 | 2022-02-08 | 恒力石化（大连）炼化有限公司 | System and process for reducing suspended matters and hardness of gasified ash water |
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- 2019-11-20 CN CN201922017734.1U patent/CN211367185U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114014465A (en) * | 2021-11-18 | 2022-02-08 | 恒力石化（大连）炼化有限公司 | System and process for reducing suspended matters and hardness of gasified ash water |
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