CN216837435U - Coal-based Fischer-Tropsch synthesis water pretreatment system - Google Patents
Coal-based Fischer-Tropsch synthesis water pretreatment system Download PDFInfo
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- CN216837435U CN216837435U CN202123360742.XU CN202123360742U CN216837435U CN 216837435 U CN216837435 U CN 216837435U CN 202123360742 U CN202123360742 U CN 202123360742U CN 216837435 U CN216837435 U CN 216837435U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 61
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 37
- 238000003786 synthesis reaction Methods 0.000 title claims abstract description 37
- 239000003245 coal Substances 0.000 title claims abstract description 29
- 238000001914 filtration Methods 0.000 claims abstract description 28
- 238000004581 coalescence Methods 0.000 claims abstract description 10
- 239000011148 porous material Substances 0.000 claims description 10
- 238000006386 neutralization reaction Methods 0.000 claims description 9
- 238000011045 prefiltration Methods 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 239000003921 oil Substances 0.000 abstract description 33
- 239000002245 particle Substances 0.000 abstract description 13
- 239000007787 solid Substances 0.000 abstract description 13
- 239000003054 catalyst Substances 0.000 abstract description 6
- 230000000903 blocking effect Effects 0.000 abstract description 4
- 238000011084 recovery Methods 0.000 abstract description 4
- 239000000295 fuel oil Substances 0.000 abstract description 3
- 238000004065 wastewater treatment Methods 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 description 8
- 238000003860 storage Methods 0.000 description 7
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 150000002894 organic compounds Chemical class 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
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Abstract
The utility model relates to a ft synthesis waste water treatment technical field discloses a coal-based ft synthesis pretreatment of water system. The utility model provides a coal-based ft synthesis pretreatment of water system, the system is including preheating device, first filter equipment, second filter equipment and the coalescence device that communicates in proper order, wherein, first filter equipment is mechanical filter equipment, first filter equipment with the second filter equipment is the same or different. The system can prevent solid particles such as catalyst, wax and the like in Fischer-Tropsch synthesis water from blocking the pre-filtering device, reduce the pressure difference of the system, reduce the operation load of equipment and ensure that the equipment stably operates for a long time; and the fluidity of heavy oil in Fischer-Tropsch synthesis water can be improved, so that the recovery rate of wax (oil) in Fischer-Tropsch synthesis water is improved.
Description
Technical Field
The utility model relates to a ft synthesis waste water treatment technical field specifically relates to a coal-based ft synthesis pretreatment of water system.
Background
The Fischer-Tropsch synthesis technology is to synthesize gas (CO + H)2) The production of various hydrocarbons and oxygen-containing organic compounds for the raw materials is a key technical link for the indirect oil preparation between coals, but the production of 1t hydrocarbon products can generate 1-1.3t of synthetic wastewater. In the prior art, a coalescer is usually adopted to realize oil-water separation, but since Fischer-Tropsch synthesis water (wastewater) contains hydrocarbons, oxygen-containing organic compounds, Fischer-Tropsch synthesis catalysts, wax and other solid particles, the existence of the Fischer-Tropsch synthesis catalysts, the wax and other solid particles can easily cause the blockage of equipment, and the blockage can not be recovered through cleaning, only new elements can be replaced, and normal production can not be ensured.
Disclosure of Invention
The utility model aims at overcoming the defect that the oil-water separation system of current ft synthetic water very easily blockked up, providing a coal-based ft synthetic water pretreatment systems, the circumstances of blockking up can be avoided equipment to this system, improves the rate of recovery of ft synthetic aquatic wax (oil) simultaneously.
In order to realize the above object, the utility model provides a coal-based ft synthesis pretreatment of water system, the system is including preheating device, first filter equipment, second filter equipment and the coalescence device that communicates in proper order, wherein, first filter equipment is mechanical filter equipment, first filter equipment with the second filter equipment is the same or different.
Preferably, a heating element is arranged in the preheating device.
Preferably, a flushable filter screen is arranged in the mechanical filter device.
Preferably, the pore size of the flushable filter mesh is 10-30 microns.
Preferably, the filter mesh of the first filter device has a pore size 5-10 microns larger than the pore size of the filter mesh of the second filter device.
Preferably, the material of the filter screen capable of being washed is stainless steel.
Preferably, a filter screen is arranged in the second filter device, and the pore size of the filter screen is 10-30 micrometers.
Preferably, the material of the filter screen in the second filter device is stainless steel.
Preferably, the system further comprises a sump tank, and the upper part of the coalescing device is provided with a sump oil discharge port connected with the sump tank.
Preferably, the system further comprises a neutralization tank, and the lower part of the coalescence device is provided with a deoiled synthetic water outlet which is connected with the neutralization tank.
Preferably, said first filtering means comprise at least two mechanical filters 2.
Preferably, said second filtering means comprise at least two pre-filters 3.
Preferably, said first filtering means comprise two mechanical filters 2 used alternately.
Preferably, said second filtering means comprise two pre-filters 3, which are used alternately.
Preferably, said coalescing means comprise two alternately used coalescers 4.
Preferably, the system further comprises a light sump oil tank, said light sump oil tank being connected to the sump oil tank.
In the coal-based Fischer-Tropsch synthesis water pretreatment system provided by the utility model, by additionally arranging the preheating device and the mechanical filtering device, on one hand, solid particles such as catalyst, wax and the like in Fischer-Tropsch synthesis water can be prevented from blocking the pre-filtering device, the system pressure difference is reduced, the operation load of the equipment is reduced, the second filtering device is prevented from blocking, and the equipment can stably operate for a long time; on the other hand, the fluidity of the heavy oil in the Fischer-Tropsch synthesis water can be improved, so that the recovery rate of the wax (oil) in the Fischer-Tropsch synthesis water is improved.
Other features and advantages of the present invention will be described in detail in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention.
Figure 1 is an embodiment of the coal-based ft synthesis water pretreatment system of the present invention in series.
Fig. 2 is a parallel embodiment of the coal-based fischer-tropsch synthesis water pretreatment system of the present invention.
Description of the reference numerals
1 preheating device 2 mechanical filter
3 prefilter 4 coalescer
5 sump oil tank 6 neutralizing tank
7 light dirty oil tank 8 water storage tank
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.
The utility model discloses a coal-based ft synthesis pretreatment of water system is including preheating device 1, first filter equipment, second filter equipment and the coalescence device that communicates in proper order, wherein, first filter equipment is mechanical filter equipment, first filter equipment with the second filter equipment is the same or different.
In the present invention, a heating element is provided in the preheating device 1. The heating element is used for heating the coal-based Fischer-Tropsch synthesis water to a preset temperature (55-65 ℃) so as to facilitate subsequent filtration and separation. After the coal-based Fischer-Tropsch synthesis water is heated by the preheating device 1, the wax-like solid particles in the coal-based Fischer-Tropsch synthesis water are in a molten state and can pass through the first filtering device and the second filtering device, so that the blocking condition of the filtering devices is reduced. Meanwhile, the recovery rate of oil substances in the coal-based Fischer-Tropsch synthetic water can be improved.
The utility model discloses in, preferably, be provided with the filter screen that can wash among the mechanical filter equipment. When the pretreatment of the coal-based Fischer-Tropsch synthesis water is carried out, the coal-based Fischer-Tropsch synthesis water heated by the preheating device 1 passes through the mechanical filter device, catalyst particles and unmelted waxy solid particles are intercepted under the action of the flushable filter screen, after the operation is carried out for a certain time, when the pressure difference between the inlet and the outlet of the mechanical filter device is more than 150kPa, the mechanical filter device is closed, the filter screen is backflushed, and the operation can be restarted after the solid particles intercepted by the filter screen are removed.
In the utility model, the aperture of the filter screen is 10-30 microns; more preferably, the filter mesh of the first filter device has a pore size 5-10 μm larger than the pore size of the filter mesh of the second filter device. Therefore, catalyst particles and unmelted waxy solid particles can be better intercepted, so that the second filtering device is prevented from being blocked, and the service life of the second filtering device is prolonged.
In the utility model discloses in, under the preferred condition, the material of flushable filter screen is the stainless steel.
In the utility model discloses in, preferably, be provided with the filter screen in the second filter equipment, the aperture of filter screen is 10-30 microns. The filter mesh in the second filter device is typically a non-flushable filter mesh. After being filtered by the first filtering device, most solid particles in the coal-based Fischer-Tropsch synthesis water are removed, and a small amount of solid small particles which are not removed can be further retained by the second filtering device.
In the present invention, preferably, the filter net of the second filter device is made of stainless steel.
In the present invention, preferably, the system further comprises a sump tank 5, and the upper portion of the coalescing means is provided with a sump oil discharge port connected to the sump tank 5. The heated and filtered coal-based Fischer-Tropsch synthesis water is subjected to oil-water separation in the coalescence device, and oil substances are gathered at the upper part of the coalescence device and then flow into the sump oil tank 5 through a sump oil discharge port.
The utility model discloses in, because still contain a small amount of water in the sump oil that gets into in the sump oil jar 5, the sump oil after stewing in sump oil jar 5, a small amount of water can gather in sump oil jar 5 bottom, therefore under the preferred condition, sump oil jar 5's bottom is equipped with water storage tank 8, water storage tank 8 is used for the storage water, and when water oil boundary position of water storage tank 8 reached the top of water storage tank 8, the water discharge in the water storage tank 8 was handled to sewage treatment plant.
In the present invention, preferably, the coalescing device comprises a filter element, and the pore diameter of the filter element is 3-8 microns.
In the present invention, preferably, the system further comprises a neutralization tank 6, and the lower part of the coalescing device is provided with a deoiled synthetic water outlet connected to the neutralization tank 6. The heated and filtered coal-based Fischer-Tropsch synthesis water is subjected to oil-water separation in the coalescence device, the water is gathered at the lower part of the coalescence device, then flows into the neutralization tank 6 through the deoiled synthesis water outlet, and can be discharged or recycled after being treated after the pH value of the water is adjusted in the neutralization tank.
The utility model discloses in, preheating device 1 can be 1, also can be a plurality of, generally adopts a preheating device.
In the present invention, the first filtering means preferably comprises at least two mechanical filters 2 (as shown in fig. 1). The first filtering device is internally provided with a plurality of mechanical filters 2, so that the system can stably operate when one mechanical filter 2 is used for removing solid particles or overhauling equipment.
In the present invention, the first filtering means preferably comprise two mechanical filters 2 used alternately. I.e. two mechanical filters 2 connected in parallel and then connected to said second filtering means (as shown in figure 2).
In the present invention, the second filtering device preferably comprises at least two pre-filters 3 (as shown in fig. 1). The arrangement mode can ensure that the system can also stably run when a filter screen of one of the prefilters 3 is replaced or equipment is overhauled.
In the present invention, the second filtering device preferably comprises two pre-filters 3 used alternately. I.e. two pre-filters 3 may be connected in parallel and then connected to the coalescing means (as shown in figure 2).
In the present invention, the coalescing means preferably comprises at least two coalescers 4 (as shown in fig. 1). This arrangement ensures that the system can be operated stably when one of the coalescers 4 is serviced.
In the present invention, the coalescing means preferably comprise two coalescers 4 used alternately. I.e. two coalescers 4 connected in parallel to said sump oil tank 5 (as shown in fig. 2).
In the present invention, the system preferably further comprises a light slop oil tank 7, and the light slop oil tank 7 is connected to the slop oil tank 5.
In actual use the utility model discloses a during the system, can introduce preheating device 1 with coal-based ft synthetic water and preheat, the coal-based ft synthetic water after will preheating introduces first filter equipment and filters, reintroduce the second filter equipment and filter, the coal-based ft synthetic water after filtering the second filter equipment introduces the coalescence device and carries out oil water separation, the sump oil that the separation obtained gets into sump oil tank 5 through the sump oil discharge port, the light sump oil of part in the sump oil tank 5 gets into light sump oil tank 7, the deoiling synthetic water that the separation obtained gets into through deoiling synthetic water export and gets into neutralization jar 6.
In conclusion, the coal-based Fischer-Tropsch synthesis water pretreatment system heats the coal-based Fischer-Tropsch synthesis water in the preheating device 1, so that the heavy oil in the coal-based Fischer-Tropsch synthesis water has good fluidity, and the blockage of a filtering device caused by low-temperature caking and the influence on the operation load of the device are prevented; the coal-based Fischer-Tropsch synthesis water after will heating sends to mechanical filter equipment, intercepts the solid impurity granule that contains in the coal-based Fischer-Tropsch synthesis water, treats that pressure differential reaches a certain degree, switches to another mechanical filter equipment and continues the operation, then washes the mechanical filter equipment that blocks up, clears away the solid impurity granule that intercepts, avoids blockking up the second filter equipment, and then influences the operation load.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the above embodiments, and the technical concept of the present invention can be within the scope of the present invention to perform various simple modifications to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.
It should be noted that the various features described in the foregoing embodiments may be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations.
In addition, various embodiments of the present invention can be combined arbitrarily, and the disclosed content should be regarded as the present invention as long as it does not violate the idea of the present invention.
Claims (10)
1. The utility model provides a coal-based ft synthesis pretreatment of water system, characterized in that, the system is including preheating device (1), first filter equipment, second filter equipment and the coalescence device that communicates in proper order, wherein, first filter equipment is mechanical filter equipment, first filter equipment with the second filter equipment is the same or different.
2. System according to claim 1, characterized in that a heating element is arranged in the preheating device (1).
3. A system according to claim 1, characterized in that a flushable filter screen is arranged in the mechanical filter device.
4. The system of claim 3, wherein the pore size of the flushable filter is 10-30 microns;
and/or the material of the filter screen capable of being washed is stainless steel.
5. The system of claim 1, wherein the filter mesh of the first filter device has a pore size 5-10 microns larger than the pore size of the filter mesh of the second filter device;
and/or a filter screen is arranged in the second filter device, and the aperture of the filter screen is 10-30 microns;
and/or the material of the filter screen in the second filter device is stainless steel.
6. A system according to claim 1, characterized in that the system further comprises a sump oil tank (5), and that the upper part of the coalescing device is provided with a sump oil drain, which is connected to the sump oil tank (5).
7. The system according to claim 1, characterized in that it further comprises a neutralization tank (6), and in that the lower part of the coalescing device is provided with a de-oiling synthetic water outlet connected to the neutralization tank (6).
8. System according to claim 1, characterized in that said first filtering means comprise at least two mechanical filters (2);
and/or the second filtering means comprise at least two pre-filters (3);
and/or the coalescing device comprises at least two coalescers (4).
9. System according to claim 1, characterized in that said first filtering means comprise two mechanical filters (2) used alternately;
and/or the second filtering means comprise two pre-filters (3) used alternately;
and/or the coalescing device comprises two alternately used coalescers (4).
10. A system according to claim 1, characterized in that the system further comprises a light slop tank (7), which light slop tank (7) is connected to the slop tank (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123360742.XU CN216837435U (en) | 2021-12-29 | 2021-12-29 | Coal-based Fischer-Tropsch synthesis water pretreatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123360742.XU CN216837435U (en) | 2021-12-29 | 2021-12-29 | Coal-based Fischer-Tropsch synthesis water pretreatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216837435U true CN216837435U (en) | 2022-06-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123360742.XU Active CN216837435U (en) | 2021-12-29 | 2021-12-29 | Coal-based Fischer-Tropsch synthesis water pretreatment system |
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| Country | Link |
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| CN (1) | CN216837435U (en) |
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2021
- 2021-12-29 CN CN202123360742.XU patent/CN216837435U/en active Active
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