CN105498307B - The slurries processing method and its slurries settling tank of paste state bed reactor are synthesized for F T - Google Patents
The slurries processing method and its slurries settling tank of paste state bed reactor are synthesized for F T Download PDFInfo
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- CN105498307B CN105498307B CN201510866409.6A CN201510866409A CN105498307B CN 105498307 B CN105498307 B CN 105498307B CN 201510866409 A CN201510866409 A CN 201510866409A CN 105498307 B CN105498307 B CN 105498307B
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- 239000002002 slurry Substances 0.000 title claims abstract description 316
- 238000003672 processing method Methods 0.000 title claims abstract description 18
- 239000007787 solid Substances 0.000 claims abstract description 50
- 238000004062 sedimentation Methods 0.000 claims abstract description 44
- 238000007599 discharging Methods 0.000 claims abstract description 40
- 238000001556 precipitation Methods 0.000 claims abstract description 10
- 239000003054 catalyst Substances 0.000 claims description 30
- 239000008187 granular material Substances 0.000 claims description 6
- 238000007711 solidification Methods 0.000 claims description 4
- 230000008023 solidification Effects 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 23
- 230000009467 reduction Effects 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 15
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000010792 warming Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000003426 co-catalyst Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000007885 magnetic separation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 210000002966 serum Anatomy 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
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- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 239000006188 syrup Substances 0.000 description 1
- 235000020357 syrup Nutrition 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/02—Settling tanks with single outlets for the separated liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/28—Mechanical auxiliary equipment for acceleration of sedimentation, e.g. by vibrators or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/30—Control equipment
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
The invention discloses a kind of slurries processing method that paste state bed reactor is synthesized for F T, including feed step, precipitation step, temperature control and discharging step and discharge step, the temperature control and the disturbance in discharging step using the method reduction upper strata low-solid content slurries of layering alternating temperature in output to lower floor's high solids content slurries.Invention also provides a kind of slurries settling tank that paste state bed reactor is synthesized for F T, including sedimentation tank body, the top of the sedimentation tank body is provided with charging aperture, and bottom is provided with discharge port；Parallel in the settling tank body that at least two slurries temperature control layers are distributed with, each slurries temperature control layer is provided with heat-exchanger rig, temperature measuring equipment and discharging opening.After being handled using the apparatus and method slurries, the slurry solid content of outflow is substantially reduced, and reduces the live load of downstream fine filter element.
Description
Technical field
The present invention relates to Fischer-Tropsch (F-T) synthetic reaction technical field, particularly relate to a kind of F-T that is used for and synthesize slurry reactor
The slurries processing method and its slurries settling tank of device.
Background technology
In F-T synthetic reactions, Fe, Co catalyst are the conventional catalyst of paste state bed reactor, and the particle of catalyst is straight
Footpath is usually 10 μm~300 μm.The unstrpped gas of paste state bed reactor by the gas distribution grid of reactor bottom from below to up
By the abundant back-mixing of the media such as the catalyst in reactor, with reactor, oil, wax, gas, liquid, solid three-phase mixed serum is formed, and
Raw physical and chemical reaction is issued in certain temperature, pressure.
With the progress of reaction, heavier hydrocarbon products (being commonly described as wax) gradually increase, and reactor liquid level rises, must be periodically
Or irregularly discharge product wax.In addition, the reason such as phase transformation because of carbon distribution or active metal, the activity of F-T catalyst gradually under
Drop；The structural stability of catalyst granules can be also gradually reduced, and occurred to crush, such as discharged not in time, can gradually increase filtering list
The load of member.Accordingly, it would be desirable to periodically or non-periodically extract slurries out from paste state bed reactor, and fresh makeup catalyst, to tie up
Hold the stabilization of W-response.
Generally, it is provided with internal filter in F-T synthesis paste state bed reactors, the specification of internal filter is usually 10 μm~
50 μm, the catalyst granules that diameter is more than its pore size filter is barred from outside filter, remaining fine particle and higher boiling
Oily wax liquor liquid enters downstream filter unit through conveying pipeline and carries out smart filtration treatment, obtains catalyst granules or content of powder exists
Below 10ppm wax product.Still contain more catalyst granules in the slurries discharged through built-in filter, generally in 10ppm
~5000ppm, is such as directly entered downstream fine filter plant, will increase the live load and maintenance cost of downstream fine filter element；
If reducing the aperture of filter screen of built-in filter, built-in filter is easily blocked, and blowback backwash difficulty is big, influence production.
At present, using increase is settled between paste state bed reactor and smart filter plant and magnetic separation device is to slurry
" Magnetic Isolation is combined for fischer-tropsch process with dynamic settling for the apparatus and method that liquid is handled, such as Chinese patent application
The method of magnetic dynamic settling vessel and separation solid particle disclosed in process " (application number 201510425564.4), and for example
A kind of Chinese patent application " separation method of syrup state bed Fischer Tropsch synthetic heavy product and catalyst " (application number
201210504532.X) disclosed in separator and separation method.
The above-mentioned apparatus and method being combined using sedimentation and Magnetic Isolation, although can be lowered into a certain extent
Catalyst content in the slurries of downstream, but because the disturbance of slurry fluids makes effect of settling unobvious, be catalyzed in the slurries filtered out
Agent solid content is still higher.
The content of the invention
It is it is an object of the invention to provide the slurries processing method that a kind of F-T synthesizes paste state bed reactor, and one kind
The F-T that realizes this method and design synthesizes the slurries settling tank of paste state bed reactor, this method and device can significantly reduce into
Enter the catalyst content in the slurries of downstream fine filter element.
To achieve the above object, it is used for the slurries processing method that F-T synthesizes paste state bed reactor, bag designed by the present invention
Include following steps：
1) feed step
By high solids content slurries from charging aperture input slurries settling tank, the liquid level of slurries settling tank rises to required work
Make liquid level.
2) precipitation step
Slurries are settled by the heat-exchanger rig being arranged in the slurries temperature control layer at the different vertical height of slurries settling tank
The slurry layer of different vertical height carries out temperature control in tank, keeps whole slurry layers in slurries settling tank to be in flow regime,
Sedimentation certain time makes large granular catalyst sink to the bottom of slurries settling tank, and the sedimentation time (be able to can lead to according to effect of settling
On-line checking or sampling analysis is crossed to determine) and live load depending on.Heat-exchanger rig may be provided inside or the wall of slurries settling tank
On face.It should be noted that the slurry layer in the present invention refers to its interior slurries can be kept to have substantially phase by independent temperature control
When temperature and mobility certain altitude interval in slurries, this height interval in slurries can with above or below it
Slurries formation mobility has the layering of notable difference.In addition, high solids content slurries refer to that solid content is higher after sedimentation in the present invention
Slurries, low-solid content slurries refer to the relatively low slurries of solid content after sedimentation, and the two is relative relation, that is, shows high solids content
The solid content of slurries is higher than low-solid content slurries, in addition to the numerical value for explicitly pointing out solid content, specific solid content value is not limited.
Similarly, higher temperature and lower temperature are also relativeness.
3) temperature control and discharging step
After the completion of sedimentation, pass through the heat-exchanger rig being arranged in the slurries temperature control layer at the different vertical height of slurries settling tank
Slurry layer to different vertical height in slurries settling tank carries out temperature control, and the heat of high solids content slurry layer is removed, made
Its viscosity increases, and mobility weakens；Period is in flow regime by the temperature control side of being held on low-solid content slurry layer, i.e.,
Viscosity is low, free flowable state；The discharging opening of low-solid content slurry layer is opened, and by low-solid content slurries therein from going out
Material mouth is exported.Output slurries typically deliver to downstream fine filter progress and make further removal of impurities, can also be settled as returning charge from the slurries
The charging aperture of tank is returned and handled again, and the charging of next slurries settling tank is then delivered to when being connected for multiple slurries settling tanks
Mouthful.
4) discharge step
Complete after output low-solid content slurries, control remaining high solids content to starch by the heat-exchanger rig in slurries temperature control layer
Liquid is in flow regime, and remaining high solids content slurries are drawn off by discharge port.The slurries drawn off can be used for matching somebody with somebody for fresh catalyst
Slurry, reuses catalyst therein, it is possible to decrease the input cost of catalyst；Or reclaimed for catalyst, or it is used as other
On the way.
Preferably, the temperature control is with discharging step, occurring its slurries solidifying during the heat for removing high solids content slurry layer
Gu.The disturbance that solidification can bring upper slurry output is greatly reduced.
Preferably, the temperature control carries out draw operation with discharging step, successively discharging successively from top to bottom to a certain layer
When, by temperature control, keep the layer to be in flow regime, and it is sticky or solidifying to be in one or more layers slurry layer below
Solid state, repeat the step until in slurries settling tank residue concentration of slurry is too high need to carry out discharging untill, subsequently enter and unload
Expect step.When successively discharging, the catalyst concn of the slurries of different height slurry layer output is different, and the superiors' concentration is minimum, more
Down concentration is higher, and its subsequent fine filter progress can be handled targetedly different layers output slurries.
Preferably, in the precipitation step, the sinking of magnetic catalyst granule is accelerated using magnetic force generator.
Preferably, in the precipitation step, 80 DEG C~200 DEG C, more preferably 90 DEG C~150 DEG C of settling temperature.
Preferably, in the precipitation step, the sedimentation time be 10min~240min, more preferably 20min~
60min。
Preferably, this method using multiple slurries settling tanks in parallel or series by the way of slurries are handled, each slurries
Slurries are handled using foregoing slurries processing method in settling tank.When in parallel, respectively from each slurry after the slurry diversion of upstream
The charging aperture of liquid settling tank enters, and handles and is exported to lower procedure according to preceding method in each slurries settling tank；During series connection,
The discharging opening and charging aperture of each slurries settling tank are sequentially connected, and upstream slurries enter from the charging aperture of first slurries settling tank,
Handled according to preceding method and be delivered to second slurries settling tank, the like, until last slurries settling tank, the slurry
Slurries in liquid settling tank are delivered to lower procedure after processing from its discharging opening.Further, it is also possible to which series, parallel combination makes
With.
Invention also provides a kind of to realize the slurry that F-T synthesizes paste state bed reactor that is used for that preceding method designs
Liquid settling tank, including sedimentation tank body, the top of the sedimentation tank body are provided with charging aperture, and bottom is provided with discharge port；It is described heavy
It is parallel in drop tank body to be distributed with least two slurries temperature controls layers, each slurries temperature control layer be provided with heat-exchanger rig, temperature measuring equipment and
Discharging opening, the discharging opening is located at the middle part or bottom of slurries temperature control layer.A certain slurries are controlled by heat-exchanger rig, temperature measuring equipment
Slurry temperature in temperature control layer is in narrower temperature range, is consistent the flow regime of this layer of slurries.Need explanation
, the slurries temperature controls layer in the present invention refers to that the height in the settling tank body where slurry layer is interval, with a pair of slurry layer 1
Should.
Preferably, the bottom of the sedimentation tank body is conical head, and the discharge port is arranged on the lowest part of conical head.
Preferably, the heat-exchanger rig is heat exchange coil, as needed logical steam or water, to control each slurries temperature control layer
Temperature.
Preferably, the quantity of each slurries temperature control layer heat exchange coil is two groups, and the slurries temperature control layer is abreast arranged on respectively
Upper and lower part.
Preferably, the sedimentation tank body is additionally provided with the magnetic force generator that magnetic catalyst is attracted to tank bottom.It is described
Magnetic force generator is the electromagnet installed in sedimentation tank base, or around the induction coil for settling tank wall face, can be produced
It is raw magnetic catalyst such as Fe, Co catalyst is accelerated the magnetic force of sinking.
Preferably, the magnetic force generator is electromagnet, is arranged on the bottom of sedimentation tank body.
Preferably, each slurries temperature control layer is respectively arranged with two temperature measuring equipments, respectively positioned at the top of the slurries temperature control layer
And bottom.Temperature measuring equipment is typically mounted on the wall corresponding to the sedimentation tank body of the slurries temperature control layer, and slurry is stretched into through wall
In liquid.The upper and lower part of each slurries temperature control layer sets temperature measuring equipment respectively, can preferably reflect the temperature of slurries.
Preferably, the temperature measuring equipment is thermocouple.
Preferably, the quantity of the slurries temperature control layer is three layers, respectively positioned at the upper, middle and lower of sedimentation tank body,
The upper and lower part of each slurries temperature control layer is provided with heat-exchanger rig and temperature measuring equipment.
The beneficial effects of the invention are as follows：This method and device cut to form obvious layering by the temperature to slurry layer,
Disturbance of the output of upper strata low-solid content slurries to lower floor's high solids content slurries is significantly reduced, slurries are handled through slurries settling tank
Afterwards, the slurry solid content of outflow is substantially reduced, and reduces the live load of downstream fine filter element.In addition, when F-T synthesizes slurry
When the built-in filter of bed reactor occurs damaged, solidification operation is carried out to slurries using the slurries settling tank, is promptly to exist
Line processing is raced against time, and does not influence normal production and the normal of downstream fine filter element to use.
Brief description of the drawings
Fig. 1 is the structural representation that F-T synthesizes the slurries settling tank of paste state bed reactor that is used for designed by the present invention.
Fig. 2 is the structural representation of two slurries settling tank series connection.
Fig. 3 is two slurries settling tanks structural representation in parallel.
Wherein：Settle tank body 1, charging aperture 2, discharge port 3, slurries temperature control layer 4, heat-exchanger rig 5, temperature measuring equipment 6, discharging opening
7th, electromagnet 8
Embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, being used for the slurries settling tank that F-T synthesizes paste state bed reactor, including sedimentation designed by the present invention
Tank body 1, the top of sedimentation tank body 1 is provided with charging aperture 2, and bottom, which is provided with, parallel in discharge port 3, sedimentation tank body 1 is distributed with three
Individual slurries temperature control layer 4, convenient for statement respectively positioned at the upper, middle and lower of sedimentation tank body 1, three 4 points of slurries temperature control layers
Also known as it is slurries temperature control layer I, slurries temperature control layer II and slurries temperature control layer III.The bottom for settling tank body 1 is conical head, discharge port
3 are arranged on the lowest part of conical head.Heat-exchanger rig 5, temperature measuring equipment 6 and discharging opening 7 are provided with each slurries temperature control layer 4.
Three discharging openings 7 are located at the middle and lower part of each slurries temperature control layer 4 respectively.
Heat-exchanger rig 5 is heat exchange coil, as needed logical steam or water, to control the temperature of each slurries temperature control layer 4.Each slurry
The quantity of the heat exchange coil of hydraulic control temperature layer 4 is two groups, and the upper and lower part of the slurries temperature control layer 4 is abreast arranged on respectively.Survey
Warm device 6 uses thermocouple.Each slurries temperature control layer 4 is respectively arranged with two thermocouples, respectively positioned at the upper of the slurries temperature control layer 4
Portion and bottom.Magnetic catalyst can be attracted to the electromagnet of tank bottom by being additionally provided with the outside of the sedimentation bottom pyramidal end socket of tank body 1
8。
Using above-mentioned slurries settling tank, the method for the slurries of processing F-T synthesis paste state bed reactors is comprised the following steps that：
1) the higher slurries of solid content are inputted slurries settling tank by feed step from charging aperture 2.
2) precipitation step, passes through slurry of the heat-exchanger rig 5 to slurries temperature control layer I, slurries temperature control layer II and slurries temperature control layer III
Liquid layer carries out temperature control, keeps whole slurry layer temperature in higher temperature, its interior slurries is had preferably mobility, open
The sinking of the accelerator activator particle of electromagnet 8, sedimentation certain time makes large granular catalyst sink to the bottom of slurries settling tank.
3) temperature control and discharging step
After the completion of sedimentation, temperature control is carried out by 5 pairs of each slurry layers of heat-exchanger rig, the heat of slurries temperature control layer III is moved
Remove, its viscosity is gradually increased and is solidified；It is higher that period keeps the slurry layer of slurries temperature control layer I and slurries temperature control layer II to be in
Temperature, and with good mobility；The discharging opening 7 of slurries temperature control layer II is opened, and low-solid content slurries therein are exported
To lower procedure.
4) discharge step, is completed after conveying low-solid content slurries, by entering to slurries temperature control layer III and its following slurries
Row heating, makes the slurry layer of solidification or the slurry layer of poor fluidity recover preferable mobility, by remaining high solids content slurries by
The discharge port 3 of slurries sedimentation pot bottom is drawn off.
As shown in figures 2-3, this method further can use two slurries settling tanks in parallel or series, each slurries settling tank
In slurries are handled using the slurries processing method.Two slurries settling tanks are disclosed in embodiment
Slurries settling tank, it is convenient for statement, it is referred to as slurries settling tank A and slurries settling tank B.As shown in Fig. 2 during series connection, slurries
Settling tank A discharging opening 7 is connected with slurries settling tank B charging aperture 2, and upstream slurries from slurries settling tank A charging aperture 2 enter
Enter, handled according to preceding method and be delivered to slurries settling tank B, be delivered to down after being handled through slurries settling tank B from its discharging opening 7
Swim process.As shown in figure 3, when in parallel, respectively from slurries settling tank A, slurries settling tank B charging aperture 2 after the slurry diversion of upstream
Into respectively from slurries settling tank A, slurries settling tank B discharging opening 7 after being handled in each slurries settling tank according to preceding method
Export to lower procedure.The slurries that the catalyst content of two discharges of slurries settling tank bottom discharge openings 3 is higher are used for fresh urge
With slurry, the recycling catalyst therein of agent.
Several application examples (containing comparative example), the slurry bed system are provided below for specific F-T synthesis paste state bed reactors
The radius of reactor is 1.5m, interval volume 120m3.30 μm of internal filter specification, is arranged on reactor middle and upper part, is highly
10m.The liquid oil wax that slurries are C15~C35 of starting in reactor, starting liquid level 6m.Certain slurry of input in reactor
State bed catalyst meter 7500kg, 20 μm~160 μm of the particle diameter range of fresh catalyst, d (0.1)=25 μm, d (0.5)=
100 μm, d (0.9)=150 μm.Reaction pressure is 3.0MPa, 230 DEG C of reaction temperature, unstripped gas H/C=2.0.Run after 30h,
Liquid level rises to 15m.
Example 1
Using a slurries settling tank, 120 DEG C of settling temperature, sedimentation time 30min are set.Afterwards by heat exchange, slurries
The slurries of temperature control layer III solidify, and keep the slurry temperature of slurries temperature control layer I, slurries temperature control layer II more than 90 DEG C.Will slurry
Hydraulic control temperature layer I, the slurries of slurries temperature control layer II are delivered to subsequent processing by discharging opening 7, and the solid content for measuring slurries is 3.29%
wt。
Example 2
Using a slurries settling tank, set after 120 DEG C of settling temperature, sedimentation 30min, without intermittent warming, incite somebody to action
Slurries temperature control layer I, the slurries of slurries temperature control layer II are fed directly to subsequent processing, and the solid content for measuring slurries is 4.87%wt.
Example 3
Connected using two slurries settling tanks, set after slurries settling tank A 150 DEG C of settling temperature, sedimentation 20min, lead to
Cross heat exchange the slurries of its slurries temperature control layer III are carried out with fast cooling processing, then by its slurries temperature control layer I, slurries temperature control layer II
Slurries are delivered to slurries settling tank slurries settling tank B by its discharging opening 7, and the settling temperature for setting slurries settling tank B is 90 DEG C, is sunk
After dropping 20min, by exchanging heat the slurries of its slurries temperature control layer III are carried out with fast cooling processing, then by its slurries temperature control layer I,
The slurries of slurries temperature control layer II are delivered to subsequent processing by its discharging opening 7, measure slurry solid content for 2.33%wt.
Example 4
Connected using two slurries settling tanks, the settling temperature for setting slurries settling tank A is 150 DEG C, after sedimentation 20min,
Without intermittent warming, the slurries of its slurries temperature control layer I, slurries temperature control layer II by its discharging opening 7 are delivered to slurries settling tank
B；The settling temperature for setting slurries settling tank B is 90 DEG C, after sedimentation 20min, without intermittent warming, by its slurries temperature control layer I,
The slurries of slurries temperature control layer II are delivered to subsequent processing by its discharging opening 7, measure slurry solid content for 4.05%wt.
Example 5
Connected using two slurries settling tanks, set after slurries settling tank A 150 DEG C of settling temperature, sedimentation 60min, lead to
Cross heat exchange the slurries of its slurries temperature control layer III are carried out with fast cooling processing, then by its slurries temperature control layer I, slurries temperature control layer II
Slurries are delivered to slurries settling tank B by its discharging opening 7, and the settling temperature for setting slurries settling tank B is 90 DEG C, sedimentation 60min it
Afterwards, by exchanging heat the slurries of its slurries temperature control layer III are carried out with fast cooling processing, then by its slurries temperature control layer I, slurries temperature control
The slurries of layer II are delivered to subsequent processing by its discharging opening 7, measure slurry solid content for 0.77%wt.
Example 6
Connected using two slurries settling tanks, the temperature for setting slurries settling tank A is 150 DEG C, after sedimentation 60min, without
Intermittent warming is crossed, the slurries of its slurries temperature control layer I, slurries temperature control layer II by its discharging opening 7 are delivered to slurries settling tank B；If
The settling temperature for putting slurries settling tank B is 90 DEG C, after sedimentation 60min, without intermittent warming, by its slurries settling tank B slurry
Hydraulic control temperature layer I, the slurries of slurries temperature control layer II are delivered to subsequent processing by discharging opening 7, and the solid content for measuring slurries is 2.84%
wt。
Example 7
Slurries settling tank is not used, the slurries of internal filter are fed directly to subsequent processing, measures the solid content of slurries
For 6.13%wt.
The data summarization of each example is in following table above：
Analysis is understood, is carried out using slurries settling tank after intermittent warming, and the solid content of the slurries exported from discharging opening is notable
Reduction, is better than the effect only with a slurries settling tank using the effect of two slurries settling tank series connection, improves the sedimentation time
The solid content of output slurries can further be reduced.
Claims (16)
1. a kind of slurries processing method that paste state bed reactor is synthesized for F-T, it is characterised in that comprise the following steps：
1) feed step
By high solids content slurries from charging aperture (2) input slurries settling tank；
2) precipitation step
It is heavy to slurries by being arranged on the heat-exchanger rig (5) in the slurries temperature control layer (4) at the different vertical height of slurries settling tank
The slurry layer for dropping different vertical height in tank carries out temperature control, keeps whole slurry layers in slurries settling tank to be in flowing shape
State, sedimentation certain time makes large granular catalyst sink to the bottom of slurries settling tank；
3) temperature control and discharging step
After the completion of sedimentation, pass through the heat-exchanger rig being arranged in the slurries temperature control layer (4) at the different vertical height of slurries settling tank
(5) slurry layer to different vertical height in slurries settling tank carries out temperature control, and the heat of high solids content slurry layer is removed,
Increase its viscosity, mobility weakens；Period is in flow regime by the temperature control side of being held on low-solid content slurry layer；
The discharging opening (7) of low-solid content slurry layer is opened, and low-solid content slurries therein are exported from discharging opening (7)；
4) discharge step
Complete after output low-solid content slurries, remaining high solids content is controlled by the heat-exchanger rig (5) in slurries temperature control layer (4)
Slurries are in flow regime, and remaining high solids content slurries are drawn off by discharge port (3).
2. the slurries processing method according to claim 1 that paste state bed reactor is synthesized for F-T, it is characterised in that：Institute
Temperature control is stated with discharging step, its slurries being solidified during the heat for removing high solids content slurry layer.
3. the slurries processing method according to claim 1 that paste state bed reactor is synthesized for F-T, it is characterised in that：Institute
Temperature control is stated with discharging step, successively discharging successively from top to bottom, when carrying out draw operation to a certain layer, by temperature control,
Keep the layer to be in flow regime, and one or more layers slurry layer below is in sticky or solidification state, repeating should
Step is untill remaining slurries need to carry out discharging in slurries settling tank.
4. it is used for the slurries processing method that F-T synthesizes paste state bed reactor according to according to any one of claims 1 to 3, its
It is characterised by：In the precipitation step, accelerate the sinking of magnetic catalyst granule using magnetic force generator.
5. it is used for the slurries processing method that F-T synthesizes paste state bed reactor according to according to any one of claims 1 to 3, its
It is characterised by：In the precipitation step, settling temperature is 80 DEG C~200 DEG C.
6. the slurries processing method according to claim 5 that paste state bed reactor is synthesized for F-T, it is characterised in that：Institute
Settling temperature is stated for 90 DEG C~150 DEG C.
7. it is used for the slurries processing method that F-T synthesizes paste state bed reactor according to according to any one of claims 1 to 3, its
It is characterised by：In the precipitation step, the sedimentation time is 10min~240min.
8. the slurries processing method according to claim 7 that paste state bed reactor is synthesized for F-T, it is characterised in that：Institute
The sedimentation time is stated for 20min~60min.
9. it is used for the slurries processing method that F-T synthesizes paste state bed reactor according to according to any one of claims 1 to 3, its
It is characterised by：The slurries settling tank is provided with multiple, and each slurries settling tank is connected in parallel or series.
10. a kind of F-T that is used for for aiming at slurries processing method according to any one of claims 1 to 3 and designing synthesizes slurry
The slurries settling tank of bed reactor, including sedimentation tank body (1), the top of the sedimentation tank body (1) are provided with charging aperture (2), bottom
Portion is provided with discharge port (3), it is characterised in that：It is parallel in the sedimentation tank body (1) that at least two slurries temperature control layers are distributed with
(4), each slurries temperature control layer (4) is provided with heat-exchanger rig (5), temperature measuring equipment (6) and discharging opening (7).
11. the slurries settling tank according to claim 10 that paste state bed reactor is synthesized for F-T, it is characterised in that：Institute
Heat-exchanger rig (5) is stated for heat exchange coil, the heat exchange coil leads to steam or water as needed, to control each slurries temperature control layer (4)
Temperature.
12. the slurries settling tank according to claim 11 that paste state bed reactor is synthesized for F-T, it is characterised in that：Respectively
The quantity of the heat exchange coil of slurries temperature control layer (4) is two groups, and the top of the slurries temperature control layer (4) is abreast arranged on respectively with
Portion.
13. it is used for the slurries settling tank that F-T synthesizes paste state bed reactor according to any one of claim 10~12, its
It is characterised by：The sedimentation tank body (1) is additionally provided with the magnetic force generator that magnetic catalyst is attracted to tank bottom.
14. the slurries settling tank according to claim 13 that paste state bed reactor is synthesized for F-T, it is characterised in that：Institute
It is the electromagnet (8) for being arranged on sedimentation tank body (1) bottom to state magnetic force generator.
15. it is used for the slurries settling tank that F-T synthesizes paste state bed reactor according to any one of claim 10~12, its
It is characterised by：Each slurries temperature control layer (4) is respectively arranged with two temperature measuring equipments (6), and two temperature measuring equipments (6) are separately positioned on this
The upper and lower part of slurries temperature control layer (4).
16. it is used for the slurries settling tank that F-T synthesizes paste state bed reactor according to any one of claim 10~12, its
It is characterised by：The temperature measuring equipment (6) is thermocouple.
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| CN100548459C (en) * | 2006-07-31 | 2009-10-14 | 中国石油化工股份有限公司 | A kind of slurry attitude bed consersion unit and application process thereof |
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