CN106701144B - A kind of in-line purification method and its F- T synthesis system for F- T synthesis - Google Patents

A kind of in-line purification method and its F- T synthesis system for F- T synthesis Download PDF

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CN106701144B
CN106701144B CN201710055461.2A CN201710055461A CN106701144B CN 106701144 B CN106701144 B CN 106701144B CN 201710055461 A CN201710055461 A CN 201710055461A CN 106701144 B CN106701144 B CN 106701144B
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张征北
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G2/00—Production of liquid hydrocarbon mixtures of undefined composition from oxides of carbon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/0046—Sequential or parallel reactions, e.g. for the synthesis of polypeptides or polynucleotides; Apparatus and devices for combinatorial chemistry or for making molecular arrays
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G45/00—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G67/00—Treatment of hydrocarbon oils by at least one hydrotreatment process and at least one process for refining in the absence of hydrogen only
    • C10G67/02—Treatment of hydrocarbon oils by at least one hydrotreatment process and at least one process for refining in the absence of hydrogen only plural serial stages only
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C02F2101/34—Organic compounds containing oxygen
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C02F2101/34—Organic compounds containing oxygen
    • C02F2101/345—Phenols
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C02F2101/38—Organic compounds containing nitrogen
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G2400/00—Products obtained by processes covered by groups C10G9/00 - C10G69/14
    • C10G2400/02—Gasoline
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G2400/00—Products obtained by processes covered by groups C10G9/00 - C10G69/14
    • C10G2400/04—Diesel oil
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G2400/00—Products obtained by processes covered by groups C10G9/00 - C10G69/14
    • C10G2400/16—Residues

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  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
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  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)

Abstract

The invention discloses a kind of in-line purification methods and its F- T synthesis system for F- T synthesis, wherein, in-line purification method, during F- T synthesis by the way of three sections of dosings, realization purifies Fischer-Tropsch synthetic and waste water, wherein, 1) addition of organic pH blenders, the acidity in product fuel can be weakened, be that establishment optimum response environment is added in the medicament of the second chemical feeding points, the pH value of waste water is reconciled to the neutrality or solutions of weak acidity suitable for purifying auxiliary agent；2) addition for purifying auxiliary agent, can remove the organic matters such as 90% or more oils, phenols, amine, esters in Fischer-Tropsch waste water, reduce dosage for third section, improve oxidation efficiency, save cost and create environment；3) potassium permanganate complexing agent is added in third section, can aoxidize first segment and second segment is added in medicament and contains unreacted organic species, the organic matter in medicament is avoided to be affected for wastewater treatment, and F- T synthesis system is suitable for above-mentioned purification method.

Description

A kind of in-line purification method and its F- T synthesis system for F- T synthesis
Technical field
The present invention discloses the technical field for being related to F- T synthesis more particularly to a kind of in-line purification side for F- T synthesis Method and its F- T synthesis system.
Background technology
China's energy conditions are " rich coal, oil-poor, few gas ", greatly develop New Coal Chemical, utilization rate huge instead of energy consumption Lowly, serious, the serious traditional coal chemical industry of environmental pollution is wasted, is to reduce entreprise cost, promote industrial upgrading, comply with state's housekeeping Plan promotes the only way which must be passed of Sustainable Socioeconomic Development.F- T synthesis is one of ICL for Indirect Coal Liquefaction technology, and it is anti-to may be simply referred to as FT It answers, it is with synthesis gas (CO and H2) it is that raw material synthesis under the conditions of catalyst (mainly iron system) and appropriate reaction is with paraffin hydrocarbon Main liquid fuel.Since the energy conversions such as previous bunker coal and natural gas can be liquid fuel by F- T synthesis, can drop Low stain is increased operation rate, and therefore, development F- T synthesis technology becomes the necessarily choosing of China's Chemical Industry transition and upgrade It selects.
But in existing Fischer-Tropsch synthesis, not only product Water in oil is high, but also containing various multiple in the water isolated Miscellaneous hydro carbons and its derivative causes in entire F- T synthesis system, due to containing the hydro carbons of various complexity in the water isolated And its derivative, often the problems such as generation pipeline blockage, frequency of maintenance is high, and discharge water pollutant is easily exceeded, limit The development and application of F- T synthesis technology are made.
Therefore, a kind of scheme that can effectively solve the above problems how is researched and developed, people's urgent problem to be solved is become.
Invention content
In consideration of it, the present disclosure provides a kind of in-line purification method for F- T synthesis and its F- T synthesis systems System, at least to solve to lead to problems such as equipment failure rate high there are the easy blocking of pipeline in existing F- T synthesis technology.
One aspect of the present invention provides a kind of in-line purification method for F- T synthesis, is applied in the F- T synthesis First stage reactor and second stage reactor, which is characterized in that the in-line purification method includes the following steps：
1) organic pH blenders are added in the output mixture of the second stage reactor, are by the pH value reconciliation of mixture After 6~7, it is passed through in heat exchanger and exchanges heat, mixture after must exchanging heat；
2) purification auxiliary agent is added in mixture after the heat exchange, and is passed through in cooler and is cooled down, is mixed after must cooling down Close object；
3) after by mixture after the cooling via gas-liquid separator separates, separation obtains gas and liquid；
4) gas for obtaining the middle separation of step 3) divides via gas-liquid again successively after heat exchanger, ammonia cooler processing It is detached from device and obtains gas and crude product, wherein the gas part for detaching acquisition is passed through as circulating air in first stage reactor；
5) liquid of separation acquisition in step 3) is obtained into crude product and waste water after oil water separator detaches；
6) crude product obtained in step 4) and step 5) is obtained into gasoline, diesel oil and Residual oil after rectifying column rectifying；
7) after potassium permanganate complexing agent being added in the waste water obtained in step 5), biological wastewater treatment is carried out.
It is preferred that organic pH blenders described in step 1) consist of the following compositions by weight：
50 parts of 20 parts of sodium acetate, 30 parts of tert-butylamine and methylamine.
Further preferably, the addition of organic pH blenders described in step 1) accounts for the output mixture amount of second stage reactor 0.8~1ppm.
Further preferably, the purification auxiliary agent described in step 2) consists of the following compositions by weight：
1~5 part of 90~99 parts of oleyl amine polyoxyethylene ether and fatty amine.
Further preferably, purified described in step 2) auxiliary agent addition account for mixing object amount after the heat exchange 0.5~ 1ppm。
Further preferably, the potassium permanganate complexing agent described in step 7) consists of the following compositions by weight：
35 parts of 25 parts of potassium permanganate, 40 parts of potassium manganate and ammonium sulfate.
Further preferably, the addition of potassium permanganate complexing agent described in step 7), which accounts for, obtains the 1 of wastewater flow rate in step 5) ~1.5ppm.
Another aspect of the present invention additionally provides a kind of F- T synthesis system, which includes：The preheating being sequentially connected in series Device 1, first stage reactor 2, molecular sieve 3, heater 4, second stage reactor 5, First Heat Exchanger 6, condensate cooler 7 and the first gas Liquid/gas separator 8；
The gas output end of first gas-liquid separator 8 be sequentially connected in series the second heat exchanger 9, ammonia cooler 10 and Second gas-liquid separator 11, and the gas output end of second gas-liquid separator 11 is connected to the input terminal of the preheater 1；
The fluid output port of first gas-liquid separator 8 is connected with oil water separator 12, the oil water separator 12 Waste water output end is connected to biological treatment tank 13, the oil phase output end of the oil water separator 12 and second gas-liquid separator 11 fluid output port is connected to the input terminal of rectifying column 14；
Wherein, the first metering pump 16 is parallel between the second stage reactor 5 and the First Heat Exchanger 6；
The second metering pump 17 is parallel between the First Heat Exchanger 6 and the condensate cooler 7；
Third metering pump 18 is parallel between the oil water separator 12 and the biological treatment tank 13.
It is preferred that the F- T synthesis system further includes：Hydrofining reactor 19；
The cerul of the input terminal of the hydrofining reactor 19 and the Residual oil output end and molecular sieve 3 of the destilling tower 9 Heavy oil output end is connected to.
In-line purification method disclosed by the invention for F- T synthesis uses three sections of dosings during F- T synthesis Mode, realization Fischer-Tropsch synthetic and waste water are purified, wherein 1) addition of organic pH blenders can weaken Acidity in product fuel, while being also the medicament addition establishment optimum response environment of the second chemical feeding points, by the pH value tune of waste water With to be suitable for purify auxiliary agent neutrality or solutions of weak acidity, to ensure that clean-up effect is best；2) addition for purifying auxiliary agent, can remove The organic matters such as 90% or more oils, phenols, amine, esters in Fischer-Tropsch waste water are removed, dosage is reduced for third section, improves oxidation Efficiency saves cost and creates environment；3) potassium permanganate complexing agent is added in third section, can aoxidize first segment and medicine is added in second segment Contain unreacted organic species in agent, the organic matter in medicament is avoided to be affected for wastewater treatment.
F- T synthesis system disclosed by the invention is applicable to above-mentioned in-line purification method, realizes Fischer-Tropsch synthesis In in-line purification, reduce pollution to environment, realize the no pollution discharge of waste water.
Description of the drawings
The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the present invention Example, and be used to explain the principle of the present invention together with specification.
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technology description to be briefly described, it should be apparent that, for those of ordinary skill in the art Speech, without having to pay creative labor, other drawings may also be obtained based on these drawings.
Fig. 1 is the structural schematic diagram that the present invention discloses a kind of F- T synthesis system that embodiment provides；
Fig. 2 is the flow diagram that the present invention discloses a kind of F- T synthesis that embodiment provides.
Specific implementation mode
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment Described in embodiment do not represent and the consistent all embodiments of the present invention.On the contrary, they be only with it is such as appended The example of the consistent device and method of some aspects being described in detail in claims, of the invention.
It is a kind of F- T synthesis system that the present embodiment provides referring to Fig. 1, which includes：What is be sequentially connected in series is pre- Hot device 1, first stage reactor 2, molecular sieve 3, heater 4, second stage reactor 5, First Heat Exchanger 6, condensate cooler 7 and first Gas-liquid separator 8；
Wherein, the gas output end of the first gas-liquid separator 8 be sequentially connected in series the second heat exchanger 9, ammonia cooler 10 with And second gas-liquid separator 11, and the gas output end of the second gas-liquid separator 11 is connected to the input terminal of preheater 1；First gas The fluid output port of liquid/gas separator 8 is connected with oil water separator 12, the waste water output end and biological treatment tank of oil water separator 12 The fluid output port of 13 connections, the oil phase output end of oil water separator 12 and the second gas-liquid separator 11 is defeated with rectifying column 14 Enter end connection；
Wherein, the first metering pump 16 is parallel between second stage reactor 5 and First Heat Exchanger 6, First Heat Exchanger 6 with It is parallel with the second metering pump 17 between condensate cooler 7, third is parallel between oil water separator 12 and biological treatment tank 13 Metering pump 18.
It is improved as scheme, above-mentioned F- T synthesis system further includes：Hydrofining reactor 19, the hydrofining reactor 19 input terminal is connected to the cerul heavy oil output end of the Residual oil output end of the destilling tower 9 and molecular sieve 3.
Using above-mentioned F- T synthesis system, the flow for carrying out F- T synthesis can be found in Fig. 2, and detailed process is：
Raw gas is made by processing in coal, and the raw gas is transformed, clean synthesis gas (CO+ is made in desulfurization, decarburization H2), synthesis gas initially enters preheater with circulating air, and temperature rises to 320-360 DEG C, into first stage reactor, is catalyzed in iron system Reaction generates paraffin hydrocarbon products under conditions of agent, into molecular sieve, wherein the cerul heavy oil component isolated is by adding hydrogen essence System, which is withdrawn deposit, is made the products such as middle wax, hard wax, Residual oil；And the C isolated50Hydro carbons below and other substances enter heater, wait for Temperature rises to 380-420 DEG C, into second stage reactor, is cracked under Fe-series catalyst, leads in the product after cracking It crosses the first metering pump and organic pH blenders is added, after being 6~7 by pH value reconciliation, be passed through after being exchanged heat in First Heat Exchanger, then By the second metering pump be added purification auxiliary agent, then pass in condensate cooler and cooled down, then by the first gas-liquid separator into Row separation, separation obtain gas and liquid, wherein the liquid that above-mentioned separation obtains enters oil water separator, the fuel isolated Oil enters crude product slot, and after potassium permanganate complexing agent is added by third metering pump in the waste water isolated, into biology Biological wastewater treatment is carried out in processing pond；The gas that above-mentioned separation obtains out enters ammonia cooler from the second heat exchanger into traveling one Step cooling, gas-liquid mixture out are again introduced into the second gas-liquid separator, and the gas part isolated is as circulating air profit With, a part is used as fuel gas, the liquid isolated to enter crude product slot, and crude product reaches rectifying column rectifying by pump, according to Liquid fuel melts the difference of boiling point, and different products is acquired out from different side lines, such as：Gasoline, diesel oil and Residual oil.
The Fischer-Tropsch synthesis that the present embodiment provides, using three sections of special dosing methods, and drug all uses The full-automatic mode added online, chemical feeding points, medicament kind and feature are as follows：
1, first segment chemical feeding points are located in F- T synthesis system after second stage reactor, organic pH blenders are added, this has Machine pH blenders are made of 20 parts by weight of sodium acetate, 30 parts by weight of tert-butylamine and 50 parts by weight of methylamine, wherein organic pH tune 0.8~1ppm that the output mixture amount of second stage reactor is accounted for the addition of agent, can by the addition of organic pH blenders The a large amount of organic acids contained in Fischer-Tropsch synthetic are neutralized, after being 6~7 by the pH value reconciliation of product, follow-up equipment corruption can be reduced Erosion reduces equipment maintenance cost, reduces the addition of Wastewater Pretreatment stage neutralizer, advantageously reducing acids etc. in waste water has Machine object is a little added as long as realizing, so that it may continue follow-up several workshop sections while use.
2, second segment chemical feeding points are located at cooler leading portion, purification auxiliary agent are added at this, the purification auxiliary agent is by oleyl amine polyoxy 90~99 parts by weight of vinethene and 1~5 parts by weight of fatty amine composition, wherein purify auxiliary agent addition account for the heat exchange after 0.5~the 1ppm for mixing object amount can avoid " oil-in-water, Water-In-Oil " phenomenon in fischer-tropsch product by the addition of the purification auxiliary agent Generation, accelerate oil emulsion, dissolved oil etc. in difficult oil-water separation and efficiently separate, reduce waste fitment maintenance period and maintenance expense With, reduce the indexs such as COD in waste water, increase company's benefit and environmental benefit, as long as and be a little added, so that it may if continuing follow-up Dry workshop section uses simultaneously.
3, third section chemical feeding points are located at biological wastewater treatment leading portion, and potassium permanganate complexing agent, the permanganic acid are added at this Potassium complexing agent is made of 25 parts by weight of potassium permanganate, 40 parts by weight of potassium manganate and 35 parts by weight of ammonium sulfate, wherein potassium permanganate The addition of complexing agent accounts for 1~1.5ppm of wastewater flow rate, passes through in the addition decomposable asymmetric choice net waste water of the potassium permanganate complexing agent 80% The organic matters such as above alcohols, aldehydes, acids, esters, the COD before biochemical treatment can decline about 12000mg/m3, reduce biochemical Processing system fluctuates, and steady production brings benefit to establishing company's environmental image.
Above three dosing point design is not mutual indepedent, but interrelated, coordination with one another, specifically, 1) being added Organic pH blenders, can weaken the acidity in product, optimum response environment be created for second segment dosing, due to fischer-tropsch product work Skill purifies auxiliary agent under neutral or solutions of weak acidity, best results；2) purification auxiliary agent is added, can remove 90% in Fischer-Tropsch waste water The organic matters such as above oils, phenols, amine, esters reduce dosage for third section, improve oxidation efficiency, save cost wound Make environment；3) potassium permanganate complexing agent is added in third section, can aoxidize first segment and second segment is added in medicament and contains unreacted Organic species, avoid the organic matter in medicament from being affected for wastewater treatment.
The method of above-mentioned F- T synthesis in-line purification is applied in Mr. Yu's coal chemical industry enterprises, improved F- T synthesis system Concrete composition, reference can be made to Fig. 1, wherein the F- T synthesis temperature of the system is 320-350 DEG C, and product is mainly with alkene and can Based on the fuel oil directly used, production capacity is 200,000 tons/year of fuel oil, and waste water uses light electrolysis UASB (Up-flow Anaerobic Sludge Bed/Blanket, upflow anaerobic sludge blanket reactor) biological contact oxidization treatment synthesizing section Waste water.
By in the F- T synthesis system of the enterprise, the former working condition before non-dosing and uses above-mentioned three sections of dosings In-line purification method after working condition, carry out test effect comparison, specifically see the table below：
By said effect control table analysis it is found that after the in-line purification method using three sections of dosings：
1, the separating effect of moisture in fuel oil (gasoline, diesel oil and Residual oil), dirt can be substantially improved, realizes waste water Middle oil emulsion, dissolubility oil etc. efficiently separate, and solve the equipment such as each tower tray, heat exchanger blockage problem caused by oily dirt, Improve tower tray and heat exchanger efficiency.
2, the medicament being added has the function of clean stripping to system pipeline, to existing oil dirt in system equipment pipeline Deposit plays the role of cleaning glass, has ensured system stable operation, reduces equipment maintenance cost.
3, the recycling for being conducive to the organic matters such as oil emulsion, dissolved oil, alcohols, acids is to improve the yield of fuel oil Enterprise brings economic benefit.
4, the organic matter in waste water is reduced, and reduces COD, TSS etc. in waste water, the stable operation to waste water treatment system Benefit is brought, and then promotes company's environmental image.
Those skilled in the art after considering the specification and implementing the invention disclosed here, will readily occur to its of the present invention Its embodiment.This application is intended to cover the present invention any variations, uses, or adaptations, these modifications, purposes or Person's adaptive change follows the general principle of the present invention and includes undocumented common knowledge in the art of the invention Or conventional techniques.The description and examples are only to be considered as illustrative, and true scope and spirit of the invention are by following Claim is pointed out.
It should be understood that the invention is not limited in the precision architectures for being described above and being shown in the accompanying drawings, and And various modifications and changes may be made without departing from the scope thereof.The scope of the present invention is limited only by the attached claims.

Claims (4)

1. a kind of in-line purification method for F- T synthesis, first stage reactor and second-stage reaction are applied in the F- T synthesis Device, which is characterized in that the in-line purification method includes the following steps：
1) organic pH blenders are added in the output mixture of the second stage reactor, it is 6~7 that the pH value of mixture, which is reconciled, Afterwards, it is passed through in heat exchanger and exchanges heat, mixture after must exchanging heat；
2) purification auxiliary agent is added in mixture after the heat exchange, and is passed through in cooler and is cooled down, mixture after must cooling down；
3) after by mixture after the cooling via gas-liquid separator separates, separation obtains gas and liquid；
4) by separation obtains in step 3) gas successively after heat exchanger, ammonia cooler processing, again via gas-liquid separator Separation obtains gas and crude product, wherein the gas part for detaching acquisition is passed through as circulating air in first stage reactor；
5) liquid of separation acquisition in step 3) is obtained into crude product and waste water after oil water separator detaches；
6) crude product obtained in step 4) and step 5) is obtained into gasoline, diesel oil and Residual oil after rectifying column rectifying；
7) after potassium permanganate complexing agent being added in the waste water obtained in step 5), biological wastewater treatment is carried out；
Wherein, organic pH blenders described in step 1) consist of the following compositions by weight：20 parts of sodium acetate, tert-butylamine 30 50 parts of part and methylamine；
Purification auxiliary agent described in step 2) consists of the following compositions by weight：90~99 parts of oleyl amine polyoxyethylene ether and 1~5 part of fatty amine；
Potassium permanganate complexing agent described in step 7) consists of the following compositions by weight：25 parts of potassium permanganate, potassium manganate 40 parts and 35 parts of ammonium sulfate.
2. being used for the in-line purification method of F- T synthesis according to claim 1, which is characterized in that organic described in step 1) The addition of pH blenders accounts for 0.8~1ppm of the output mixture amount of second stage reactor.
3. being used for the in-line purification method of F- T synthesis according to claim 1, which is characterized in that purified described in step 2) The addition of auxiliary agent accounts for 0.5~1ppm of mixing object amount after the heat exchange.
4. being used for the in-line purification method of F- T synthesis according to claim 1, which is characterized in that Gao Meng described in step 7) The addition of sour potassium complexing agent accounts in step 5) 1~1.5ppm for obtaining wastewater flow rate.
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