CN114921262A - Method for producing light white oil and petroleum ether from naphtha - Google Patents

Method for producing light white oil and petroleum ether from naphtha Download PDF

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Publication number
CN114921262A
CN114921262A CN202210467549.6A CN202210467549A CN114921262A CN 114921262 A CN114921262 A CN 114921262A CN 202210467549 A CN202210467549 A CN 202210467549A CN 114921262 A CN114921262 A CN 114921262A
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China
Prior art keywords
naphtha
adsorption
petroleum ether
white oil
light white
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CN202210467549.6A
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Chinese (zh)
Inventor
袁海锋
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Dongying Wanghao Chemical Co ltd
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Dongying Wanghao Chemical Co ltd
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Priority to CN202210467549.6A priority Critical patent/CN114921262A/en
Publication of CN114921262A publication Critical patent/CN114921262A/en
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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
    • C10G31/00—Refining of hydrocarbon oils, in the absence of hydrogen, by methods not otherwise provided for
    • 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
    • C10G25/00—Refining of hydrocarbon oils in the absence of hydrogen, with solid sorbents
    • 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
    • C10G25/00—Refining of hydrocarbon oils in the absence of hydrogen, with solid sorbents
    • C10G25/02—Refining of hydrocarbon oils in the absence of hydrogen, with solid sorbents with ion-exchange material
    • C10G25/03—Refining of hydrocarbon oils in the absence of hydrogen, with solid sorbents with ion-exchange material with crystalline alumino-silicates, e.g. molecular sieves
    • 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
    • C10G25/00—Refining of hydrocarbon oils in the absence of hydrogen, with solid sorbents
    • C10G25/06—Refining of hydrocarbon oils in the absence of hydrogen, with solid sorbents with moving sorbents or sorbents dispersed in the oil
    • C10G25/08—Refining of hydrocarbon oils in the absence of hydrogen, with solid sorbents with moving sorbents or sorbents dispersed in the oil according to the "moving bed" method
    • 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
    • C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
    • C10G2300/20—Characteristics of the feedstock or the products
    • C10G2300/201—Impurities
    • C10G2300/202—Heteroatoms content, i.e. S, N, O, P
    • 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
    • C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
    • C10G2300/20—Characteristics of the feedstock or the products
    • C10G2300/201—Impurities
    • C10G2300/208—Sediments, e.g. bottom sediment and water or BSW
    • 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
    • C10G2400/06—Gasoil
    • 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
    • C10G2400/14—White oil, eating oil
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P30/00—Technologies relating to oil refining and petrochemical industry
    • Y02P30/20—Technologies relating to oil refining and petrochemical industry using bio-feedstock

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  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)

Abstract

The invention relates to the technical field of naphtha processing, in particular to a method for producing light white oil and petroleum ether by naphtha, which comprises the following steps: s1: equipment inspection: checking the processing equipment according to the operation rules and the checking flow; s2: pretreatment of impurities with large specific gravity: introducing naphtha into a vibration tank, starting the vibration tank, vibrating to enable heavy impurities to be rapidly precipitated, and after a period of time, leading out the naphtha subjected to upper layer treatment in the tank through a pipeline; s3: adsorption pretreatment: introducing the naphtha treated by the S2 into an adsorption tower, and removing trace colloid, sulfur-containing compounds and nitrogen-containing compounds under the conditions of low temperature and low pressure. According to the method for producing the light white oil and the petroleum ether from the naphtha, the naphtha raw material is subjected to one-step pretreatment through the vibration tank, the large specific gravity impurities are rapidly precipitated through vibration, part of the large specific gravity impurities are removed in advance, the feeding of the adsorbent can be reduced during the later-stage raw material processing, the adsorption efficiency is improved, and the raw material waste is reduced.

Description

Method for producing light white oil and petroleum ether from naphtha
Technical Field
The invention relates to the technical field of naphtha processing, in particular to a method for producing light white oil and petroleum ether from naphtha.
Background
Naphtha (chemical light oil) is a main raw material in oil refining and petrochemical industries, and is petroleum fraction obtained by primary or secondary processing with the dry point of less than 200 ℃, secondary processing generally comes from the technical processes of catalytic cracking, hydrocracking, coking and the like, and because domestic crude oil is generally heavier and the straight-run naphtha fraction content is very low, the utilization of secondary processed naphtha as a petrochemical raw material is an important subject, and the deep processing of crude oil is also very important internationally.
Petroleum ether is a light petroleum product, the boiling range of the petroleum ether is 30-120 ℃, and the collection temperature range is about 30 ℃ generally. Petroleum ether is used as a chemical reagent grade product, strict requirements are imposed on the quality of the petroleum ether in national standards, and the petroleum ether product is divided into three types I, II and III according to the regulation of GB/T15894-2008, and the three types I, II and III respectively correspond to boiling range specifications of 30-60 ℃, 60-90 ℃ and 90-120 ℃, and the distillation range of the petroleum ether product is contained in naphtha. The light white oil is divided into two specifications I and II according to NBSHT0913-2015 standard, and according to No. 6 of the national energy agency, the light white oil is not in the range of the items listed by the consumption tax of the finished oil.
The existing method for producing light white oil and petroleum ether from naphtha mostly adopts the modes of adsorption by an adsorption tower, an adsorption device by a simulated moving bed and the like for production and processing, the naphtha often contains granular suspended solid impurities and is removed after chemical reaction with added materials, and the removal mode often wastes raw materials and has low efficiency.
Disclosure of Invention
The invention aims to provide a method for producing light white oil and petroleum ether from naphtha, which aims to solve the problems that the method for producing light white oil and petroleum ether from naphtha in the background art mostly adopts adsorption towers, simulated moving bed adsorption devices and other modes for production and processing, naphtha often contains granular suspended solid impurities and is removed after chemical reaction with added materials, and the removal mode often wastes raw materials and has low efficiency.
In order to achieve the purpose, the invention provides the following technical scheme: a method for producing light white oil and petroleum ether from naphtha comprises the following steps:
s1: equipment inspection: checking the processing equipment according to the operation rules and the checking flow;
s2: pretreatment of impurities with large specific gravity: introducing naphtha into a vibration tank, starting the vibration tank, vibrating to enable heavy impurities to be rapidly precipitated, and after a period of time, leading out the naphtha subjected to upper layer treatment in the tank through a pipeline;
s3: adsorption pretreatment: introducing the naphtha treated by the S2 into an adsorption tower, and removing micro colloid, sulfur-containing compounds and nitrogen-containing compounds under the conditions of low temperature and low pressure;
s4: simulated moving bed adsorption unit: the adsorbent is aromatic hydrocarbon group organic silicide modified mesoporous silicon dioxide material; an adsorption zone, an isolation zone, a regeneration zone and a refining zone are sequentially arranged along the material flowing direction, and the adsorption zone mainly adsorbs aromatic hydrocarbon components in naphtha;
s5: purifying by a refining zone to obtain non-aromatic components, regenerating by a regenerating zone through a desorbent to obtain aromatic-rich components, and recycling the regenerated adsorbent through an isolation zone;
s6: and (3) generating a product: the non-aromatic components enter a deep dearomatization tower to remove residual trace aromatic hydrocarbon to obtain light white oil and petroleum ether which meet the national standard;
s7: and (4) finished product storage: and guiding the treated product into a storage tank through a pipeline for storage.
Further, the S1 device check includes: the device comprises an adsorption tower, a vibration tank, a simulated moving bed adsorption device, a conduit and a pressure pump; the equipment inspection is carried out by pressurizing or cold starting and other modes, data is collected, and production is carried out after the production conditions are met.
Further, the jars are industrial jars, utilize the gravity principle, make the great impurity of proportion can precipitate fast through the mode of vibrations, and the processing speed is fast, and is efficient.
Furthermore, the adsorption pretreatment is realized by adding chemical raw materials, so that the micro colloid, the sulfur-containing compound and the nitrogen-containing compound contained in the chemical raw materials are subjected to chemical reaction with the chemical raw materials, thereby forming floccules or solids and precipitating, and further realizing the purpose of adsorption and separation.
Further, the fixed bed of the simulated moving bed adsorption packed with the solid adsorbent periodically changes the inlet and outlet positions of the material flows, such as raw material, desorbent (fluid), adsorption liquid and raffinate by means of a specially designed rotary valve, so that the adsorbent is in countercurrent contact with the material flows.
Further, the pre-adsorbent is one or more of modified alumina, modified silica and modified molecular sieve with strong acid centers.
Compared with the prior art, the invention has the beneficial effects that: according to the method for producing the light white oil and the petroleum ether from the naphtha, the naphtha raw material is subjected to one-step pretreatment through the vibration tank, the large specific gravity impurities are rapidly precipitated through vibration, part of the large specific gravity impurities are removed in advance, the feeding of the adsorbent can be reduced during the later-stage raw material processing, the adsorption efficiency is improved, and the raw material waste is reduced.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
The invention provides a method for producing light white oil and petroleum ether from naphtha, which comprises the following steps:
s1: equipment inspection: checking the processing equipment according to the operation rules and the checking flow; the S1 device check includes: the device comprises an adsorption tower, a vibration tank, a simulated moving bed adsorption device, a conduit and a pressure pump; the equipment inspection is performed by pressurizing or cold starting, and data is collected, and production is performed after the data meets production conditions
S2: pretreatment of impurities with large specific gravity: introducing naphtha into a vibration tank, starting the vibration tank, vibrating to enable impurities with large specific gravity to be rapidly precipitated, and after a period of time, leading out the naphtha subjected to upper layer treatment in the tank through a pipeline; the vibration tank is an industrial vibration tank, impurities with high specific gravity can be rapidly precipitated by utilizing the gravity principle and in a vibration mode, the treatment speed is high, and the efficiency is high;
s3: adsorption pretreatment: introducing the naphtha treated by the S2 into an adsorption tower, and removing micro colloid, sulfur-containing compounds and nitrogen-containing compounds under the conditions of low temperature and low pressure; the adsorption pretreatment is characterized in that chemical raw materials are added, so that micro colloid, sulfur-containing compounds and nitrogen-containing compounds contained in the adsorption pretreatment are subjected to chemical reaction with the chemical raw materials, floccules or solids are formed, and precipitates are generated, so that the purpose of adsorption and separation is achieved; the pre-adsorbent is one or more of modified alumina, modified silica and modified molecular sieve with strong acid centers;
s4: simulated moving bed adsorption unit: the adsorbent is aromatic hydrocarbon group organic silicide modified mesoporous silicon dioxide material; an adsorption zone, an isolation zone, a regeneration zone and a refining zone are sequentially arranged along the material flowing direction, and the adsorption zone mainly adsorbs aromatic hydrocarbon components in naphtha; the fixed bed of the simulated moving bed adsorption filling solid adsorbent periodically changes the inlet and outlet positions of material flows such as raw materials, desorbent (fluid), adsorption liquid, raffinate and the like by means of a specially designed rotary valve, so that the adsorbent is in countercurrent contact with the material flows;
s5: purifying the obtained product in a refining zone to obtain a non-aromatic component, regenerating the regenerated component in a regenerating zone through a desorbent to obtain an aromatic-rich component, and recycling the regenerated adsorbent through an isolation zone;
s6: and (3) generating a product: the non-aromatic components enter a deep dearomatization tower to remove residual trace aromatic hydrocarbon to obtain light white oil and petroleum ether which meet the national standard;
s7: and (4) finished product storage: and guiding the treated product into a storage tank for storage through a pipeline.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof.

Claims (6)

1. A method for producing light white oil and petroleum ether from naphtha is characterized in that: the method comprises the following steps:
s1: equipment inspection: checking the processing equipment according to the operation rules and the checking flow;
s2: pretreatment of impurities with large specific gravity: introducing naphtha into a vibration tank, starting the vibration tank, vibrating to enable heavy impurities to be rapidly precipitated, and after a period of time, leading out the naphtha subjected to upper layer treatment in the tank through a pipeline;
s3: adsorption pretreatment: introducing the naphtha treated by the S2 into an adsorption tower, and removing micro colloid, sulfur-containing compounds and nitrogen-containing compounds under the conditions of low temperature and low pressure;
s4: simulated moving bed adsorption unit: the adsorbent is aromatic hydrocarbon group organic silicide modified mesoporous silicon dioxide material; an adsorption zone, an isolation zone, a regeneration zone and a refining zone are sequentially arranged along the material flowing direction, and the adsorption zone mainly adsorbs aromatic hydrocarbon components in naphtha;
s5: purifying the obtained product in a refining zone to obtain a non-aromatic component, regenerating the regenerated component in a regenerating zone through a desorbent to obtain an aromatic-rich component, and recycling the regenerated adsorbent through an isolation zone;
s6: and (3) generating a product: the non-aromatic components enter a deep dearomatization tower to remove residual trace aromatic hydrocarbon to obtain light white oil and petroleum ether which meet the national standard;
s7: and (4) finished product storage: and guiding the treated product into a storage tank for storage through a pipeline.
2. The method for producing light white oil and petroleum ether from naphtha as claimed in claim 1, wherein: the S1 device check includes: the device comprises an adsorption tower, a vibration tank, a simulated moving bed adsorption device, a conduit and a pressure pump; the equipment inspection is carried out by pressurizing or cold starting and other modes, data is collected, and production is carried out after the production conditions are met.
3. The method for producing light white oil and petroleum ether from naphtha as claimed in claim 1, wherein: the jarring is industry jarring, utilizes the gravity principle, makes the great impurity of proportion can precipitate fast through the mode of vibrations, and the processing speed is fast, and is efficient.
4. The method for producing light white oil and petroleum ether from naphtha as claimed in claim 1, wherein: the adsorption pretreatment is characterized in that chemical raw materials are added, so that micro colloid, sulfur-containing compounds and nitrogen-containing compounds contained in the adsorption pretreatment are subjected to chemical reaction with the chemical raw materials, floccules or solids are formed, and precipitation is generated, so that the purpose of adsorption and separation is achieved.
5. The method for producing light white oil and petroleum ether from naphtha as claimed in claim 1, wherein: the fixed bed of the simulated moving bed adsorption filling solid adsorbent changes the inlet and outlet positions of material flows such as raw materials, desorbent (fluid), adsorption liquid, raffinate and the like periodically by means of a specially designed rotary valve, so that the adsorbent is in countercurrent contact with the material flows.
6. The method for producing light white oil and petroleum ether from naphtha as claimed in claim 1, wherein: the pre-adsorbent is one or more of modified alumina, modified silica and modified molecular sieve with strong acid centers.
CN202210467549.6A 2022-04-29 2022-04-29 Method for producing light white oil and petroleum ether from naphtha Withdrawn CN114921262A (en)

Priority Applications (1)

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CN202210467549.6A CN114921262A (en) 2022-04-29 2022-04-29 Method for producing light white oil and petroleum ether from naphtha

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210467549.6A CN114921262A (en) 2022-04-29 2022-04-29 Method for producing light white oil and petroleum ether from naphtha

Publications (1)

Publication Number Publication Date
CN114921262A true CN114921262A (en) 2022-08-19

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CN202210467549.6A Withdrawn CN114921262A (en) 2022-04-29 2022-04-29 Method for producing light white oil and petroleum ether from naphtha

Country Status (1)

Country Link
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Application publication date: 20220819