CN109401833B - Refining method for continuously, efficiently and environmentally-friendly refining clean liquid fuel oil - Google Patents

Refining method for continuously, efficiently and environmentally-friendly refining clean liquid fuel oil Download PDF

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CN109401833B
CN109401833B CN201811524417.2A CN201811524417A CN109401833B CN 109401833 B CN109401833 B CN 109401833B CN 201811524417 A CN201811524417 A CN 201811524417A CN 109401833 B CN109401833 B CN 109401833B
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oil
primary
tank
raw material
flowmeter
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CN109401833A (en
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王立
陈燕国
陈新宜
蔡胜
曹玉平
李金生
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Hunan Chunrun Shihua New Energy Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
    • C11B3/00—Refining fats or fatty oils
    • C11B3/001—Refining fats or fatty oils by a combination of two or more of the means hereafter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/80—Mixing plants; Combinations of mixers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/80—Mixing plants; Combinations of mixers
    • B01F33/81—Combinations of similar mixers, e.g. with rotary stirring devices in two or more receptacles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/80—Forming a predetermined ratio of the substances to be mixed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/80—Forming a predetermined ratio of the substances to be mixed
    • B01F35/83—Forming a predetermined ratio of the substances to be mixed by controlling the ratio of two or more flows, e.g. using flow sensing or flow controlling devices
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00—Liquid carbonaceous fuels
    • C10L1/02—Liquid carbonaceous fuels essentially based on components consisting of carbon, hydrogen, and oxygen only
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
    • C11B3/00—Refining fats or fatty oils
    • C11B3/02—Refining fats or fatty oils by chemical reaction
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
    • C11B3/00—Refining fats or fatty oils
    • C11B3/02—Refining fats or fatty oils by chemical reaction
    • C11B3/04—Refining fats or fatty oils by chemical reaction with acids
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
    • C11B3/00—Refining fats or fatty oils
    • C11B3/02—Refining fats or fatty oils by chemical reaction
    • C11B3/06—Refining fats or fatty oils by chemical reaction with bases
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
    • C11B3/00—Refining fats or fatty oils
    • C11B3/16—Refining fats or fatty oils by mechanical means

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Microbiology (AREA)
  • Organic Chemistry (AREA)
  • Wood Science & Technology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)

Abstract

The invention relates to a refining method of clean fuel oil, in particular to a refining method of continuous, efficient and environment-friendly clean liquid fuel oil. The refining equipment comprises a mixing kettle, a double parallel metering tank, a primary and a secondary raw material accumulation flowmeter, a primary and a secondary raw material instantaneous flowmeter, a primary efficient atomizer, a primary efficient separator, a primary high-level settling tank, a secondary efficient atomizer, a secondary efficient separator and the like, wherein the refining method adopts a primary and a secondary twice reaction to separate for multiple times, so that the impurity separation precision is improved; in addition, the double coordination metering of instantaneous and accumulated flow avoids the problem of excessive reaction caused by unbalanced proportion of local agent oil due to intermittent filtration in the prior art, is suitable for automatic continuous production operation of refined clean liquid fuel oil, has high production efficiency and improves the product quality; and the method has the advantages of no waste treatment cost, labor and time saving, cost saving and no limitation on raw materials.

Description

Refining method for continuously, efficiently and environmentally-friendly refining clean liquid fuel oil
Technical Field
The invention relates to a refining method of fuel oil, in particular to a refining method for continuously, efficiently and environmentally-friendly refining clean liquid fuel oil.
Background
The liquid biomass energy fuel is a new energy which is specially processed by taking a biological base as a raw material and meets the combustion performance, and the biomass liquid fuel in China is mainly produced by taking waste animal and vegetable oil, waste cooking oil and industrial waste animal and vegetable oil through a series of oil processing. The biomass liquid fuel is more and more valued by developed countries in the world because of the advantages of better safety performance, good combustion performance, good regenerability, easy degradation, low emission, environmental friendliness and the like, and has become the development direction of clean energy in the future.
The raw oil for producing biomass liquid fuel in China is mostly derived from waste vegetable oil, waste cooking oil, industrial waste oil and the like, and the raw oil has the common characteristics of being rich in water-soluble oil-soluble impurities and solid impurities. Such as fine and granular suspended matters, colloid matters, water-soluble phospholipids, protein polymers, decomposed matters and the like, which cannot influence the quality of the biomass liquid fuel, so that in the industrial process, the raw oil of waste vegetable oil, waste cooking oil and industrial waste oil is firstly required to be refined to remove corresponding impurities, and then the raw oil is converted into clean industrial biomass liquid fuel through a series of processing. In the past, the traditional refining treatment processes are numerous, such as a filtration method, a clay adsorption filtration method, a strong acid washing process, a water bath degumming process, an electrolyte water washing process and the like. These conventional processes have the following disadvantages when dealing with complex waste animal and vegetable oils.
1. When clay adsorption filtration and water bath degumming processes are utilized, a large amount of waste water and waste residues are generated, and the mistreatment of the waste water and the waste residues can greatly influence the surrounding environment, but if the waste water and the waste residues are treated normally and harmlessly, the production cost is increased, so that enterprises are difficult to bear.
2. The strong acid washing process has serious corrosion to equipment and influences the surrounding environment.
3. The existing technology is difficult to carry out continuous production, and most of the technology is required to adopt intermittent filtration. The intermittent filtering method has the advantages of high energy consumption and low working efficiency.
4. Some traditional technological methods only pay attention to solid-phase impurities, while some technological methods pay attention to water-soluble phospholipids and the like, so that the quality of products is difficult to ensure.
Therefore, how to find a refining method which can save energy and protect environment and continuously refine to improve productivity is always a technical problem to be solved in the production line.
Disclosure of Invention
The invention aims to provide a continuous, efficient and environment-friendly refining clean liquid fuel oil refining method which is suitable for automatic continuous production, has high production efficiency, adopts a twice-reaction and multiple-separation process, has high refining quality, is energy-saving and environment-friendly, and reduces the discharge of waste water and waste residues.
The invention realizes the aim through the following technical scheme:
a refining method for continuously, efficiently and environmentally-friendly refining clean liquid fuel oil is characterized by comprising the following steps of:
the refining equipment adopted by the refining equipment comprises a mixing kettle A, a double parallel metering tank A, a primary raw material accumulation flowmeter, a primary raw material instantaneous flowmeter, a primary efficient atomizer, a heavy oil recovery tank, a primary efficient separator, a primary high-level settling tank, a double parallel metering tank B, a mixing kettle B, a secondary raw material accumulation flowmeter, a secondary raw material instantaneous flowmeter, a secondary high-level settling tank, a secondary efficient atomizer, a secondary efficient separator and a finished oil temporary storage tank. The mixing kettle A is connected with a double parallel metering tank A through a pipeline, the double parallel metering tank A is connected to a first-stage efficient atomizer through a pipeline and a first-stage raw material instantaneous flowmeter, the other side of the first-stage efficient atomizer is connected with a raw material oil inlet through a pipeline, a first-stage raw material instantaneous flowmeter and a first-stage raw material accumulation flowmeter, the bottom of the first-stage efficient atomizer is connected with a first-stage high-level settling tank through a pipeline, a first-stage sampling port is arranged in the middle of a connecting pipeline of the first-stage efficient atomizer and the first-stage high-level settling tank, the first-stage high-level settling tank is respectively connected with a first-stage efficient separator and a heavy oil recovery tank through pipelines, and the first-stage efficient separator is communicated with the heavy oil recovery tank through pipelines; the mixing kettle B is connected with a double parallel metering tank B through a pipeline, the double parallel metering tank B is connected with a secondary efficient atomizer through a pipeline and a secondary raw material instantaneous flowmeter, one side of the secondary efficient atomizer is communicated with a secondary raw material instantaneous flowmeter, a secondary raw material accumulation flowmeter and an outlet end of a primary efficient separator through a pipeline, the bottom of the secondary efficient atomizer is connected with a secondary high-level sedimentation tank through a pipeline, a secondary sampling port is arranged in the middle of a connecting pipeline of the secondary efficient atomizer and the secondary high-level sedimentation tank, the secondary high-level sedimentation tank is connected with a secondary efficient separator through a pipeline, and the secondary efficient separator is respectively connected with a heavy oil recovery tank and a finished oil temporary storage tank through pipelines;
the refining method comprises the following steps:
firstly, preparing a mixture A and a mixture B according to the weight of raw oil to be refined:
preparation of the mixture A: firstly, the 2H with the content of 30 percent is obtained by 0.3 percent of the weight of the raw oil 3 PO 4 ·H 20 Adding into a mixing kettle A, adding 2H 3 PO 4 ·H 20 30% by weight of CRS3-2 type mist inhibitor is heated to 40 ℃ by a steam heating jacket, and then 2H is added 3 PO 4 ·H 20 10% by weight of CO (NH) 2 ) 2 Slowly adding the mixture into the mixing kettle A, and fully stirring until the mixture is completely dissolved;
preparation of a compound agent B: firstly, adding softened water accounting for 0.3 percent of the weight of raw oil into a mixing kettle B12, heating the mixture to 40 ℃ by a steam heating jacket, and then adding Na accounting for 30 percent of the weight of the softened water 2 CO 3 Slowly adding into the mixing kettle B, stirring while adding, and dissolving to obtain Al 30% of softened water 2 (SO 4 ) 3 Adding 10% NaOH, 5% ARX-17 type anionic polyacrylamide and 0.5% T502A type antioxidant into mixing kettle B, stirring while adding until completely thawing；
Secondly, placing the mixed agent A in the mixed kettle A into a double-parallel metering tank A, opening a switch of the double-parallel metering tank A, placing the mixed agent B in the mixed kettle B into a double-parallel metering tank B, and opening a switch of the double-parallel metering tank B;
thirdly, pumping the raw oil into a first-stage efficient atomizer from a raw oil inlet of refining equipment through a first-stage raw material accumulation flowmeter and a first-stage raw material instantaneous flowmeter by using a pump, and regulating the first-stage raw material accumulation flowmeter to control the flow of the raw oil to be 5 tons/hour;
fourth, adjusting a primary raw material instantaneous flowmeter to control the instantaneous flow of the double parallel metering tank A, wherein the instantaneous flow is 14.5-15.5 kg/h;
fifthly, starting a first-stage efficient atomizer to mix the mixed agent A with the raw oil at a high speed, so that the mixed agent A is fully contacted with suspended matters, colloid substances, water-soluble phospholipids, protein polymers and decomposers in the raw oil; the mixing proportion example is controlled by timely adjusting the double parallel metering tank A or the primary raw material accumulation flowmeter through the quality detection data of the primary sampling port;
sixthly, the mixed mixture A and the raw oil are pumped into a primary high-level sedimentation tank; the two primary high-level settling tanks are exchanged, and when one primary high-level settling tank is fed, the other primary high-level settling tank performs static settling and separation;
seventh, the bottom heavy oil settled by the primary high-level settling tank is put into a heavy oil recovery tank, the light oil settled by the primary high-level settling tank is pumped into a primary high-efficiency separator, and the primary high-efficiency separator is started to further separate the light oil;
eighth, the light oil separated from the first-stage efficient separator is pumped into a second-stage efficient atomizer through a second-stage raw material accumulation flowmeter and a second-stage raw material instantaneous flowmeter, and the flow rate of the second-stage raw material accumulation flowmeter is regulated to be 5 tons/hour;
ninth, regulating a secondary raw material instantaneous flowmeter to control the instantaneous flow of the double parallel metering tank B, wherein the instantaneous flow of the double parallel metering tank B is 14.5-15.5 kg/h;
starting a second-stage efficient atomizer, mixing the mixed agent B with light oil at a high speed, and timely adjusting the double parallel metering tanks B or a second-stage raw material accumulation flowmeter to control a mixed proportion example according to quality detection data of a second-stage sampling port;
eleventh, the secondarily mixed raw oil is pumped into a secondary high-level sedimentation tank, and a secondary high-efficiency separator is started at the same time, so that the product of the reaction of the mixed agent B is separated from the raw oil;
twelfth, the separated raw oil is pumped into a finished oil temporary storage tank, the first-grade qualified pure raw oil flows out from a first-grade valve to a qualified product through a multi-position oil distributing port of the finished oil temporary storage tank, and the bottom unqualified raw oil flows back to a system from a bottommost outlet for re-refining so as to ensure the product quality;
thirteenth step, mixing residual oil: and (3) merging the heavy oil at three parts of the first-stage high-level settling tank, the first-stage high-efficiency separator and the second-stage high-efficiency separator, then pumping the mixed heavy oil into a heavy oil recovery tank, stirring and mixing the mixed heavy oil into uniform black liquid heavy oil, and adjusting the PH value of the mixed liquid heavy oil to be used as fuel oil of a heavy oil boiler.
Compared with the prior art, the invention has the beneficial effects that:
1. the refining method has high production efficiency, is suitable for automatic continuous production operation of refined clean liquid fuel oil, simultaneously combines double coordination metering of instantaneous flow and accumulated flow, avoids the problem of excessive reaction caused by unbalanced proportion of local agent oil due to intermittent type in the prior art, and improves the product quality; 2. the quality of refined liquid fuel is high, and the process of the whole refining method adopts a method of separating for multiple times by a primary reaction and a secondary reaction, thereby improving the precision of separating impurities; 3. the refining method has no waste water and waste residue, the whole refining method only generates about 5% of heavy oil, and the heavy black oil residues can be blended with 180 fuel oil to form heavy oil for heavy oil boiler fuel, so that the method has no waste treatment cost, saves labor and time, saves cost and has no environmental pollution; 4. the refining method is suitable for refining various raw oil impurities, and has no limitation on raw materials.
Drawings
FIG. 1 is a schematic diagram of the structure of an apparatus for a refining process for continuous, efficient, environmentally friendly refining of clean liquid fuel oils.
In the figure: 1. the device comprises a mixing kettle A,2, double parallel metering tanks A,3, a raw material oil inlet, 4, a primary raw material accumulation flowmeter, 5, a primary raw material instantaneous flowmeter, 6, a primary efficient atomizer, 7, a heavy oil recovery tank, 8, a primary efficient separator, 9, a primary sampling port, 10, a primary high-level settling tank, 11, double parallel metering tanks B,12, a mixing kettle B,13, a secondary raw material accumulation flowmeter, 14, a secondary raw material instantaneous flowmeter, 15, a secondary high-level settling tank, 16, a secondary efficient atomizer, 17, a secondary efficient separator, 18, a finished product oil temporary storage tank, 19, a finished product oil outlet, 20, a finished product oil multi-position oil distribution port, 21 and a secondary sampling port.
Detailed Description
The refining method for continuously, efficiently and environmentally-friendly refining clean liquid fuel oil comprises the following steps:
the refining equipment adopted by the refining equipment consists of a mixing kettle A1, a double parallel metering tank A2, a primary raw material accumulation flowmeter 4, a primary raw material instantaneous flowmeter 5, a primary efficient atomizer 6, a heavy oil recovery tank 7, a primary efficient separator 8, a primary high-level sedimentation tank 10, a double parallel metering tank B11, a mixing kettle B12, a secondary raw material accumulation flowmeter 13, a secondary raw material instantaneous flowmeter 14, a secondary high-level sedimentation tank 15, a secondary efficient atomizer 16, a secondary efficient separator 17 and a finished oil temporary storage tank 18, wherein the mixing kettle A1 is connected with the double parallel metering tank A2 through a pipeline, the double parallel metering tank A2 is connected with the primary efficient atomizer 6 through the pipeline and the primary raw material instantaneous flowmeter 5, one side of the primary efficient atomizer 6 is connected with a raw material oil inlet 3 through the pipeline, the primary raw material instantaneous flowmeter 5 and the primary raw material accumulation flowmeter 4, the bottom of the primary efficient atomizer 6 is connected with the primary high-level sedimentation tank 10 through the pipeline, a primary sampling port 9 is arranged on the connecting pipeline of the primary high-level sedimentation tank 6 and the primary high-level sedimentation tank 10, and the heavy oil sedimentation tank 10 is respectively connected with the primary efficient separator 7 through the high-level separator 8 and the high-level separator 7 through the pipeline and the high-efficient separator 7; the mixing kettle B12 is connected with a double parallel metering tank B11 through a pipeline, the double parallel metering tank B11 is connected with a secondary efficient atomizer 16 through a pipeline and a secondary raw material instantaneous flowmeter 14, one side of the secondary efficient atomizer 16 is communicated with a primary efficient separator 8 through the pipeline, the secondary raw material instantaneous flowmeter 14 and a secondary raw material accumulation flowmeter 13, the bottom of the secondary efficient atomizer 16 is connected with a secondary high-level settling tank 15 through a pipeline, a secondary sampling port 21 is arranged on a connecting pipeline of the secondary efficient atomizer 16 and the secondary high-level settling tank 15, the secondary high-level settling tank 15 is connected with a secondary efficient separator 17 through a pipeline, and the secondary efficient separator 17 is respectively connected with a heavy oil recovery tank 7 and a finished oil temporary storage tank 18 through pipelines (see figure 1).
The refining method comprises the following steps:
firstly, preparing a mixture A and a mixture B according to the weight of raw oil to be refined:
preparation of the mixture A: firstly, the 2H with the content of 30 percent is obtained by 0.3 percent of the weight of the raw oil 3 PO 4 ·H 20 Adding into a mixing kettle A1, adding 2H 3 PO 4 ·H 20 30% by weight of CRS3-2 type mist inhibitor is heated to 40 ℃ by a steam heating jacket, and then 2H is added 3 PO 4 ·H 20 10% by weight of CO (NH) 2 ) 2 Slowly adding the mixture into the mixing kettle A1, and fully stirring until the mixture is completely dissolved;
preparation of a compound agent B: firstly, adding softened water accounting for 0.3 percent of the weight of raw oil into a mixing kettle B12, heating the mixture to 40 ℃ by a steam heating jacket, and then adding Na accounting for 30 percent of the weight of the softened water 2 CO 3 Slowly adding into the mixing kettle B12, stirring while adding, and dissolving to obtain Al 30% of softened water 2 (SO 4 ) 3 NaOH accounting for 10 percent of the weight of softened water, ARX-17 anionic polyacrylamide accounting for 5 percent of the weight of softened water and T502A type antioxidant accounting for 0.5 percent of the weight of softened water are slowly added into a mixing kettle B12, and stirring is started while adding until the mixture is completely dissolved;
secondly, placing a mixed agent A in a mixed kettle A1 into a double parallel metering tank A2, opening a switch of the double parallel metering tank A2, placing a mixed agent B in a mixed kettle B12 into a double parallel metering tank B11, and opening a switch of the double parallel metering tank B11;
thirdly, pumping raw oil from a raw oil inlet 3 of refining equipment into a first-stage efficient atomizer 6 through a first-stage raw material accumulation flowmeter 4 and a first-stage raw material instantaneous flowmeter 5 by using a pump, and regulating the first-stage raw material accumulation flowmeter 4 to control the flow rate of the raw oil to be 5 tons/hour;
fourth, a first-stage raw material instantaneous flowmeter 5 is regulated to control the instantaneous flow of the double parallel metering tank A2, wherein the instantaneous flow is 14.5-15.5 kg/hour;
fifthly, starting a first-stage high-efficiency atomizer 6 to mix the mixed agent A with the raw oil at a high speed, so that the mixed agent A is fully contacted with suspended matters, colloid matters, water-soluble phospholipids, protein polymers and decomposers in the raw oil; the mixing proportion example is controlled by timely adjusting the double parallel metering tank A or the primary raw material accumulation flowmeter through the quality detection data of the primary sampling port;
sixthly, the mixed mixture A and the raw oil are pumped into a primary high-level sedimentation tank 10; the number of the first-level sedimentation tanks 10 is two, and the two first-level sedimentation tanks are exchanged, when one of the first-level sedimentation tanks 10 is fed, the other first-level sedimentation tank 10 performs static sedimentation and separation;
seventh, the bottom heavy oil settled in the primary high-level settling tank 10 is put into a heavy oil recovery tank 7, the light oil settled in the primary high-level settling tank 10 is pumped into a primary high-efficiency separator 8, and the primary high-efficiency separator 8 is started to further separate the light oil;
eighth, the light oil separated by the first-stage high-efficiency separator 8 is pumped into a second-stage high-efficiency atomizer 16 through a second-stage raw material accumulation flowmeter 13 and a second-stage raw material instantaneous flowmeter 14, and the flow rate of the second-stage raw material accumulation flowmeter 13 is regulated to be 5 tons/hour;
ninth, regulating a secondary raw material instantaneous flowmeter 14 to control the instantaneous flow of the double parallel metering tank B11, wherein the instantaneous flow of the double parallel metering tank B11 is 14.5-15.5 kg/h;
starting a second-stage efficient atomizer 16, mixing the mixed agent B with light oil at a high speed, and timely adjusting the double parallel metering tank B11 or the second-stage raw material accumulation flowmeter 13 to control the mixing proportion by the quality detection data of the second-stage sampling port 21;
eleventh, the secondarily mixed raw oil is pumped into a secondary high-level sedimentation tank 15, and a secondary high-efficiency separator 17 is started at the same time, so that the product of the reaction of the mixed agent B is separated from the raw oil;
twelfth, the separated raw oil is pumped into a finished oil temporary storage tank 18, the first-grade qualified pure raw oil flows out from a first-grade valve to a qualified product through a finished oil multi-position oil distributing port 20 of the finished oil temporary storage tank 18, and the bottom unqualified raw oil flows back to a system from a bottommost outlet for re-refining so as to ensure the product quality;
thirteenth step, mixing residual oil: the heavy oil of the first-stage high-efficiency separator 10, the first-stage high-efficiency separator 8 and the second-stage high-efficiency separator 17 are mixed and then are pumped into the heavy oil recovery tank 7, and are stirred and mixed into uniform black liquid heavy oil, and after the PH value is regulated, the black liquid heavy oil is used for fuel oil of a heavy oil boiler.
In a specific example, 100 tons of raw oil are processed.
The first step, preparing a mixture A and a mixture B:
1. crude oil samples were tested and tested in laboratory prior to the preparation of A, B doses. The main work is as follows: a. checking mechanical original indexes of the raw oil product; b. further verifying the formulation ratio of the mixture A and the mixture B (the formulation ratio of the mixture A and the mixture B can be adjusted in a trace manner according to the actual detection condition); c. after determining the optimal dosage of the mixture A and the mixture B in a laboratory, firstly, making a small sample of the raw oil in the laboratory, then detecting mechanical indexes of the oil, comparing the front mechanical index and the rear mechanical index to determine that the quality requirement of a customer is met, and then determining the mixing proportion of the mixture A and the mixture B (the micro proportion can be properly adjusted according to the requirement of the customer);
2. the content of the 2H is 30 percent, wherein the weight of the raw oil is 0.3 percent 3 PO 4 ·H 20 Namely, the weight of 100 tons multiplied by 0.003=300 kg is put into a mixing kettle A1; adding 2H again 3 PO 4 ·H 20 30% by weight of CRS3-2 type mist suppressant, namely: 300×0.3=90 kg, the jacket was heated to 40℃with steam, and 2H was then added 3 PO 4 ·H 20 10% by weight of CO (NH) 2 ) 2 The method comprises the following steps: 300 x 0.1=30 kg, slowly adding into the mixing kettle A1, stirring while adding for no less than one hour, and fully stirring until completely dissolving;
3. preparation of a compound agent B: firstly, 100 tons of 0.003=300 kg of softened water is pumped into a mixing kettle B12, a steam heating jacket is used for heating to 40 ℃, and then 30 percent of Na which is the weight of the softened water is added 2 CO 3 That is, 300 kg×0.3=90 kg was slowly added to the compounding tank B12 with stirring until completely dissolved, and then 30% of Al by weight of softened water was added 2 (SO 4 ) 3 NaOH, ARX-17 anionic polyacrylamide, antioxidant of type T502A, i.e. 300 kg x 0.3=90 kg Al 2 (SO 4 ) 3 300 kg x 0.1=30 kg NaOH, 300 kg x 0.05=15 kg ARX-17 type anionic polyacrylamide and 300 kg x 0.005=1.5 kg T502A type antioxidant are slowly added to the compounding kettle B12 with stirring until completely dissolved.
And secondly, placing the mixed agent A in the mixed kettle A1 into a double parallel metering tank A2, opening a switch of the double parallel metering tank A2, placing the mixed agent B in the mixed kettle B12 into a double parallel metering tank B11, and opening a switch of the double parallel metering tank B11.
Thirdly, pumping the raw oil from a raw oil inlet 3 of the refining equipment into a first-stage efficient atomizer 6 through a first-stage raw material accumulation flowmeter 4 and a first-stage raw material instantaneous flowmeter 5 by using a pump, and adjusting the first-stage raw material accumulation flowmeter 4 to control the mass flow of the raw oil to be 5 tons/hour.
Fourth, the instantaneous flow of the double parallel metering tank A2 is controlled by adjusting the primary raw material instantaneous flow meter 5, and the instantaneous mass flow is 14.5-15.5 kg/h.
And fifthly, starting a first-stage high-efficiency atomizer 6 to mix the mixed agent A with the raw oil at a high speed, so that the mixed agent A is fully contacted with suspended matters, colloid substances, water-soluble phospholipids, protein polymers and decomposers in the raw oil.
Sixthly, the mixed mixture A and the raw oil are pumped into a primary high-level sedimentation tank 10; the number of the primary high-level settling tanks 10 is two, and the two primary high-level settling tanks 10 are interchanged, and when one primary high-level settling tank 10 is fed, the other primary high-level settling tank 10 performs static settling and separation.
Seventh, the bottom heavy oil settled in the first-stage settling tank 10 is put into the heavy oil recovery tank 7, the light oil settled in the first-stage settling tank 10 is pumped into the first-stage efficient separator 8, and the first-stage efficient separator 8 is started to further separate the light oil.
Eighth, the light oil separated by the first-stage high-efficiency separator 8 is pumped into a second-stage high-efficiency atomizer 16 through a second-stage raw material accumulation flowmeter 13 and a second-stage raw material instantaneous flowmeter 14, and the flow rate of the light oil is controlled to be 5 tons/hour by adjusting the second-stage raw material accumulation flowmeter 13; controlling the accumulated flow of the secondary raw material oil is controlling the centrifugal separation quality of the primary section, because the pressure of the high-speed centrifugal machine is increased when the outlet flow is small, and the quality of separation is higher when the pressure is increased, but the yield is correspondingly reduced, and a balance point is found between the quality and the yield by controlling the accumulated flow of the secondary raw material.
And ninth, regulating a secondary raw material instantaneous flowmeter 14 to control the instantaneous flow of the mixed agent B of the double parallel metering tank B11, wherein the instantaneous mass flow is 15 kg/h.
Starting a second-stage efficient atomizer 16, mixing the mixed agent B with light oil at a high speed, and timely adjusting the double parallel metering tank B11 or the second-stage raw material accumulation flowmeter 13 to control the mixing proportion by the quality detection data of the second-stage sampling port 21; when ph of the detection data of the secondary sampling port 21 is 7 or more, the amount of the mixture B is appropriately increased, and when ph is 6.5 or less, the amount of the mixture B is appropriately decreased.
Eleventh, the secondarily mixed raw oil is pumped into a secondary high-level sedimentation tank 15, and a secondary high-efficiency separator 17 is started at the same time, so that the product of the reaction of the mixed agent B is separated from the raw oil.
And twelfth, pumping the separated raw oil into a finished oil temporary storage tank 18, flowing the first-grade qualified pure raw oil out of the first-grade valve to the qualified product through a finished oil multi-position oil distributing port 20 of the finished oil temporary storage tank 18, and flowing the bottom unqualified raw oil back to the system from a bottommost outlet for re-refining so as to ensure the product quality.
Thirteenth step, mixing residual oil: the heavy oil of the first-stage high-efficiency separator 10, the first-stage high-efficiency separator 8 and the second-stage high-efficiency separator 17 are mixed and then are pumped into the heavy oil recovery tank 7, and are stirred and mixed into uniform black liquid heavy oil, and after the PH value is regulated, the black liquid heavy oil is used for fuel oil of a heavy oil boiler.
The above description is merely a preferred embodiment of the present invention, and the above illustration is not to be construed as limiting the spirit of the present invention in any way, and any simple modification or variation of the above embodiments according to the technical spirit of the present invention, and equivalent embodiments that may be changed or modified to equivalent variations using the above disclosed technical spirit of the present invention, will still fall within the scope of the technical solutions of the present invention, without departing from the spirit and scope of the present invention.

Claims (1)

1. A refining method for continuously, efficiently and environmentally-friendly refining clean liquid fuel oil is characterized by comprising the following steps of:
the refining equipment adopted by the refining equipment consists of a mixing kettle A (1), a double parallel metering tank A (2), a primary raw material accumulation flowmeter (4), a primary raw material instantaneous flowmeter (5), a primary efficient atomizer (6), a heavy oil recovery tank (7), a primary efficient separator (8), a primary high-level sedimentation tank (10), a double parallel metering tank B (11), a mixing kettle B (12), a secondary raw material accumulation flowmeter (13), a secondary raw material instantaneous flowmeter (14), a secondary high-level sedimentation tank (15), a secondary efficient atomizer (16), a secondary efficient separator (17) and a finished oil temporary storage tank (18), wherein the mixing kettle A (1) is connected with the double parallel metering tank A (2) through a pipeline, the double parallel metering tank A (2) is connected to the primary efficient atomizer (6) through the pipeline and the primary raw material instantaneous flowmeter (5), one side of the primary efficient atomizer (6) is connected with a raw material oil inlet (3) through the pipeline, the primary raw material flowmeter (5) and the raw material accumulation flowmeter (4), the bottom of the primary efficient atomizer (6) is connected with the primary sedimentation tank (10) through the pipeline, the primary atomizer (10) is connected with a sampling port (9) through the pipeline, the primary high-level sedimentation tank (10) is respectively connected with the primary high-efficiency separator (8) and the heavy oil recovery tank (7) through pipelines, and the primary high-efficiency separator (8) is communicated with the heavy oil recovery tank (7) through pipelines; the mixing kettle B (12) is connected with a double parallel metering tank B (11) through a pipeline, the double parallel metering tank B (11) is connected with a secondary efficient atomizer (16) through a pipeline and a secondary raw material instantaneous flowmeter (14), one side of the secondary efficient atomizer (16) is communicated with a primary efficient separator (8) through the pipeline, the secondary raw material instantaneous flowmeter (14) and a secondary raw material accumulation flowmeter (13), the bottom of the secondary efficient atomizer (16) is connected with a secondary high-level settling tank (15) through the pipeline, a secondary sampling port (21) is arranged on a connecting pipeline of the secondary efficient atomizer (16) and the secondary high-level settling tank (15), the secondary high-level settling tank (15) is connected with a secondary efficient separator (17) through the pipeline, and the secondary efficient separator (17) is respectively connected with a heavy oil recovery tank (7) and a finished oil temporary storage tank (18) through the pipeline;
the refining method comprises the following steps:
the first step, preparing a mixture A and a mixture B according to the weight of raw oil to be refined:
preparation of the mixture A: firstly, the 2H with the content of 30 percent is obtained by 0.3 percent of the weight of the raw oil 3 PO 4 ·H 20 Adding into a mixing kettle A (1), adding 2H 3 PO 4 ·H 20 30% by weight of CRS3-2 type mist inhibitor is heated to 40 ℃ by a steam heating jacket, and then 2H is added 3 PO 4 ·H 20 10% by weight of CO (NH) 2 ) 2 Slowly adding the mixture into the mixing kettle A (1), and fully stirring until the mixture is completely dissolved;
preparation of a compound agent B: firstly, adding softened water accounting for 0.3 percent of the weight of raw oil into a mixing kettle B (12), heating the mixture to 40 ℃ by a steam heating jacket, and then adding Na accounting for 30 percent of the weight of the softened water 2 CO 3 Slowly adding the mixture into a mixing kettle B (12),stirring while adding until completely dissolving, and adding 30% of Al 2 (SO 4 ) 3 10 percent of NaOH, 5 percent of ARX-17 anionic polyacrylamide and 0.5 percent of T502A antioxidant are slowly added into a mixing kettle B (12) until the mixture is completely dissolved;
secondly, placing a mixed agent A in a mixed kettle A (1) into a double-parallel metering tank A (2), opening a switch of the double-parallel metering tank A (2), placing a mixed agent B in a mixed kettle B (12) into a double-parallel metering tank B (11), and opening a switch of the double-parallel metering tank B (11);
thirdly, pumping raw oil into a first-stage efficient atomizer (6) from a raw oil inlet (3) of refining equipment through a first-stage raw material accumulation flowmeter (4) and a first-stage raw material instantaneous flowmeter (5) by using a pump, and adjusting the first-stage raw material accumulation flowmeter (4) to control the flow of the raw oil to be 5 tons/hour;
fourth, a first-stage raw material instantaneous flowmeter (5) is regulated to control the instantaneous flow of the double parallel metering tank A (2), wherein the instantaneous flow is 14.5-15.5 kg/h;
fifthly, starting a first-stage efficient atomizer (6) to mix the mixed agent A with the raw oil at a high speed, so that the mixed agent A is fully contacted with suspended matters, colloid matters, water-soluble phospholipids, protein polymers and decomposers in the raw oil; the mixing proportion example is controlled by timely adjusting the double parallel metering tank A or the primary raw material accumulation flowmeter through the quality detection data of the primary sampling port;
sixthly, the mixed mixture A and the raw oil are pumped into a primary high-level sedimentation tank (10); the two primary high-level settling tanks (10) are exchanged, and when one primary high-level settling tank (10) is fed, the other primary high-level settling tank (10) performs static settling and separation;
seventh, the bottom heavy oil settled by the primary high-level settling tank (10) is put into a heavy oil recovery tank (7), the light oil settled by the primary high-level settling tank (10) is pumped into a primary high-efficiency separator (8), and the primary high-efficiency separator (8) is started to further separate the light oil;
eighth, the light oil separated by the first-stage efficient separator (8) is pumped into a second-stage efficient atomizer (16) through a second-stage raw material accumulation flowmeter (13) and a second-stage raw material instantaneous flowmeter (14), and the control flow of the second-stage raw material accumulation flowmeter (13) is regulated to be 5 tons/hour;
ninth, adjusting a secondary raw material instantaneous flowmeter (14) to control the instantaneous flow of the double parallel metering tank B (11), wherein the instantaneous flow is 14.5-15.5 kg/h;
starting a second-stage efficient atomizer (16), mixing the mixed agent B and the light oil at a high speed, and timely adjusting the double parallel metering tank B (11) or the second-stage raw material accumulation flowmeter (13) to control the mixing proportion through quality detection data of a second-stage sampling port (21);
eleventh, the secondarily mixed raw oil is pumped into a secondary high-level sedimentation tank (15), and a secondary high-efficiency separator (17) is started at the same time, so that the product of the reaction of the mixed agent B is separated from the raw oil;
twelfth, the separated raw oil is pumped into a finished oil temporary storage tank (18), the first-grade qualified pure raw oil flows out from a first-grade valve to a qualified product through a finished oil multi-position oil distributing port (20) of the finished oil temporary storage tank (18), and the bottom unqualified raw oil flows back to a system from a bottommost outlet for re-refining so as to ensure the product quality;
thirteenth step, mixing residual oil: the heavy oil of the first-level high-level settling tank (10), the first-level high-efficiency separator (8) and the second-level high-efficiency separator (17) are mixed and then are pumped into the heavy oil recovery tank (7), are stirred and mixed into uniform black liquid heavy oil, and are used for fuel oil of a heavy oil boiler after the pH value is regulated.
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB571973A (en) * 1942-12-30 1945-09-18 William Lockhart Clayton An improved method of refining vegetable and animal oils
CN101475824A (en) * 2009-01-22 2009-07-08 王立 Wash-free, energy-saving and environment friendly technological process and system apparatus for producing clean fuel oil
CN103265973A (en) * 2013-05-31 2013-08-28 梁文胜 Method and equipment for producing automotive diesel fuel from medium temperature coal tar light oil as raw material
CN103468413A (en) * 2013-09-25 2013-12-25 陕西合盛生物柴油技术开发有限公司 Production method of biodiesel
CN209368211U (en) * 2018-12-13 2019-09-10 荆州大地生物工程股份有限公司 A kind of continuous, high-efficiency environment friendly refining clean fuel liquid oil refining equipment

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB571973A (en) * 1942-12-30 1945-09-18 William Lockhart Clayton An improved method of refining vegetable and animal oils
CN101475824A (en) * 2009-01-22 2009-07-08 王立 Wash-free, energy-saving and environment friendly technological process and system apparatus for producing clean fuel oil
CN103265973A (en) * 2013-05-31 2013-08-28 梁文胜 Method and equipment for producing automotive diesel fuel from medium temperature coal tar light oil as raw material
CN103468413A (en) * 2013-09-25 2013-12-25 陕西合盛生物柴油技术开发有限公司 Production method of biodiesel
CN209368211U (en) * 2018-12-13 2019-09-10 荆州大地生物工程股份有限公司 A kind of continuous, high-efficiency environment friendly refining clean fuel liquid oil refining equipment

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