CN116407870B - Reaction device for prolonging service life of top filter component and gasoline desulfurization method - Google Patents

Reaction device for prolonging service life of top filter component and gasoline desulfurization method Download PDF

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Publication number
CN116407870B
CN116407870B CN202111668288.6A CN202111668288A CN116407870B CN 116407870 B CN116407870 B CN 116407870B CN 202111668288 A CN202111668288 A CN 202111668288A CN 116407870 B CN116407870 B CN 116407870B
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reaction
solid phase
gasoline
fine powder
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CN116407870A (en
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鲁波娜
王维
段宏霖
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Institute of Process Engineering of CAS
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Institute of Process Engineering of CAS
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D15/00—Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
    • B01D15/02—Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor with moving adsorbents
    • 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
    • C10G25/12—Recovery of used adsorbent
    • 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
    • C10G2400/00—Products obtained by processes covered by groups C10G9/00 - C10G69/14
    • C10G2400/02—Gasoline

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

Abstract

The invention provides a reaction device for prolonging the service life of a top filtering component and a gasoline desulfurization method; the reaction device comprises a sedimentation section, a transition section and a reaction main body section from top to bottom in sequence; the cross section of the sedimentation section is larger than that of the reaction main body section; a filter component is arranged at the top of the reaction device; the reaction device also comprises a secondary solid phase outlet arranged at the sedimentation section and/or the transition section. The method comprises the following steps: desulfurizing the gasoline in the main reaction section from bottom to top through adsorbent particles, generating fine powder by collision of the adsorbent particles, conveying the adsorbent particles and the fine powder upwards under the flowing action of the gasoline, sequentially passing through a transition section and a sedimentation section, and discharging part of the fine powder through a secondary solid phase outlet of the sedimentation section and/or the transition section; and filtering the adsorbent particles and the fine powder through a filter element to obtain the desulfurized gasoline product. The invention can improve the entrainment condition of fine powder in the reactor and prolong the service life of the filter.

Description

Reaction device for prolonging service life of top filter component and gasoline desulfurization method
Technical Field
The invention relates to the technical field of reactor equipment for refining of petroleum refining enterprises, in particular to a reaction device for prolonging the service life of a top filtering part and a method for desulfurizing gasoline.
Background
In recent years, the control standard of sulfur content of petroleum catalytic cracking (FCC) gasoline is severe, and the FCC gasoline can be treated by adopting an S-zorb adsorption desulfurization technology at present, so that a cleaner gasoline product is obtained.
The S-zorb technology adopts the adsorption reaction principle to desulfurize FCC gasoline, and can produce low-sulfur gasoline with the octane number loss of less than 10 ppm.
The S-zorb adsorption desulfurization process technology is one of the key technologies for producing the gasoline with ultra-low sulfur content at present, and has the main operation problems of shorter operation period and main reasons of the phenomenon: because of strong inter-particle collision and gas-solid contact in the adsorbent particle bed in the reactor, a certain amount of fine powder is generated, large adsorbent particles cannot fall back into the reactor completely in the settler part because of the fine powder particles, but are entrained into the raw gas, when the raw gas carries the adsorbent particles and the fine powder to the top of the reactor, after long-term operation, the more the fine powder particles are accumulated, the blocking of the reactor filter is caused, the pressure drop of the reactor is suddenly increased, and the whole reactor stops operating.
Therefore, the development of an optimization technique for the S-zorb reactor, thereby reducing particle entrainment, prolonging the service life of a filter and the running period of the reactor, has great significance in guiding the actual production process of a factory and improving the economic benefit of the factory.
Disclosure of Invention
In view of the problems existing in the prior art, the invention provides the reaction device for prolonging the service life of the top filter component and the gasoline desulfurization method, which can optimize the traditional S-zorb device, improve the entrainment condition of fine powder in the reactor, effectively inhibit the fine powder particles from reaching the top outlet, reduce the burden of the filter of the reactor, prolong the service life of the filter, further increase the operation period of the S-zorb reactor and improve the economic benefit of enterprises.
To achieve the purpose, the invention adopts the following technical scheme:
In a first aspect, the present invention provides a reaction apparatus for extending the life of a top filter element, the reaction apparatus comprising, in order from top to bottom, a settling section, a transition section, and a reaction main section; the cross section of the sedimentation section is larger than that of the reaction main body section; a filter component is arranged at the top of the reaction device; the reaction device also comprises a secondary solid phase outlet arranged at the sedimentation section and/or the transition section.
The reaction device provided by the invention is additionally provided with a new spent adsorbent outlet transverse pipe at the transition section and/or the sedimentation section cylinder, namely a secondary solid phase outlet, so that the content of fine powder particles in the transition section is reduced, the amount of fine powder reaching a top filter, namely the top outlet of the reaction device, is reduced, and the entrainment condition of the fine powder is improved. The optimization method is simple and easy to implement, has lower cost and obvious optimization effect, is beneficial to the related enterprises to prolong the service life of the filter and the operation period of the reactor on the premise of ensuring the quality and the yield of the product, and reduces the corresponding equipment cost so as to obtain higher economic benefit.
The present invention is not particularly limited to the filter member, and a filter member conventionally built in an S-zorb reactor may be used.
Preferably, the reaction device is a desulfurization reaction device, preferably an S-zorb device.
Preferably, the height ratio of the settling section to the transition section is 1 to 2.5:1, for example, may be 1.0:1, 1.2:1, 1.4:1, 1.6:1, 1.7:1, 1.8:1, 2:1, 2.2:1, 2.4:1 or 2.5:1, etc., but not limited to the recited values, and other non-recited values in the range are equally applicable.
Preferably, the height ratio of the sedimentation section to the reaction main section is 0.11-0.2:1, for example, 0.11:1, 0.12:1, 0.14:1, 0.15:1, 0.16:1, 0.18:1, 0.19:1 or 0.2:1, etc., but not limited to the recited values, other non-recited values within the range are equally applicable.
Preferably, the diameter ratio of the sedimentation section and the reaction main section is 1.7-2.3:1, for example, 1.7:1, 1.88:1, 1.96:1, 2.04:1, 2.12:1, 2.19:1, 2.27:1, 2.28:1, 2.29:1 or 2.3:1, etc., but not limited to the recited values, other non-recited values in the range are equally applicable.
Preferably, when the secondary solid phase outlet is disposed in the settling section, the distance from the secondary solid phase outlet to the bottom of the settling section is 0.4 to 0.6m, for example, 0.4m, 0.43m, 0.45m, 0.47m, 0.49m, 0.52m, 0.54m, 0.56m, 0.58m or 0.6m, etc., but the present invention is not limited to the recited values, and other non-recited values in the range are equally applicable. The secondary solid phase outlet is preferably arranged in the range, so that the entrainment condition of fine powder is reduced.
Preferably, when the secondary solid phase outlet is disposed in the transition section, the distance between the secondary solid phase outlet and the top of the transition section is 0.5-0.6 m, for example, 0.5m, 0.52m, 0.53m, 0.54m, 0.55m, 0.56m, 0.57m, 0.58m, 0.59m or 0.6m, etc., but the present invention is not limited to the recited values, and other non-recited values in the range are equally applicable. The secondary solid phase outlet is preferably arranged in the range, so that the entrainment condition of fine powder is reduced.
The invention more preferably has the secondary solid phase outlet arranged at the transition section, so that the entrainment of fine powder can be reduced better.
Preferably, the top of the reaction device is provided with a top outlet; the filter element is connected to the top outlet.
Preferably, the top of the reaction device is a top sphere.
Preferably, the secondary solid phase outlet is a horizontal transverse outlet. Preferably, the bottom of the reaction main section is provided with a feed gas phase inlet.
Preferably, a fluid distribution means is provided at the inner underside of the reaction body section.
Preferably, the fluid distribution means comprises a fluid distribution plate and a blister distributor disposed on the fluid distribution plate.
Preferably, the blister distributor comprises a distributor riser and blisters disposed on the distributor riser.
Preferably, a fresh adsorbent solid phase inlet is provided on one side of the lower portion of the reaction body section.
Preferably, the included angle between the solid phase inlet of the fresh adsorbent and the vertical direction is 30-45 °, for example, 30 °,32 °, 34 °, 37 °, 40 °, 43 ° or 45 °, etc., but the present invention is not limited to the recited values, and other values not recited in the range are equally applicable.
Preferably, the distance between the solid phase inlet of the fresh adsorbent and the bottom of the reaction main section is 1.5-2.3 m, for example, 1.5m, 1.6m, 1.7m, 1.8m, 1.9m, 2.0m, 2.1m, 2.2m or 2.3m, etc., but not limited to the recited values, and other non-recited values within the range are equally applicable.
Preferably, a spent adsorbent solid phase outlet is arranged on one side of the upper part of the reaction main body section.
Preferably, the solid phase outlet of the spent adsorbent is horizontally arranged.
Preferably, the distance between the solid phase outlet of the spent adsorbent and the top of the reaction main section is 6.9-7.4 m, for example, 6.9m, 7.0m, 7.1m, 7.2m, 7.3m or 7.4m, etc., but not limited to the recited values, and other non-recited values within the range are equally applicable.
In a second aspect, the present invention provides a method for desulfurizing gasoline using the reaction apparatus for extending the life of the top filter element of the first aspect, the method comprising:
the gasoline is desulfurized in the main reaction section from bottom to top through adsorbent particles, the adsorbent particles collide to generate fine powder, the adsorbent particles and the fine powder are conveyed upwards under the flowing action of the gasoline to pass through the transition section and the sedimentation section in sequence, and part of the fine powder is discharged through the sedimentation section and/or a secondary solid phase outlet of the transition section. And filtering the adsorbent particles and the fine powder through a filter element to obtain the desulfurized gasoline product.
Preferably, the gasoline is FCC gasoline.
The particle size of the fine powder is preferably not more than 20. Mu.m, and may be, for example, 1. Mu.m, 4. Mu.m, 6. Mu.m, 8. Mu.m, 10. Mu.m, 12. Mu.m, 14. Mu.m, 16. Mu.m, 18. Mu.m, 20. Mu.m, etc., but not limited to the values recited, and other values not recited in the range are equally applicable. The reaction device is particularly suitable for the condition that the grain diameter of fine powder is less than or equal to 20 mu m, greatly reduces the load of a filtering part and improves the operation period of the whole S-zorb device.
The adsorbent particles preferably have an average particle diameter of 40 to 80. Mu.m, for example, 40 μm, 45 μm, 49 μm, 54 μm, 58 μm, 63 μm, 67 μm, 72 μm, 76 μm or 80 μm, but the present invention is not limited to the above-mentioned values, and other values not mentioned in the above range are equally applicable.
The adsorbent particles preferably have a particle density of 0.9 to 1.1kg·m -3, and may be 0.9kg·m-3、0.94kg·m-3、0.97kg·m-3、1kg·m-3、1.04kg·m-3、1.07kg·m-3, 1.1kg·m -3, or the like, for example, but are not limited to the values recited, and other values not recited in the range are equally applicable.
The initial solid content in the reaction main body section is preferably 50 to 70%, for example, 50%, 53%, 55%, 57%, 59%, 62%, 64%, 66%, 68% or 70%, etc., but not limited to the recited values, and other non-recited values in this range are equally applicable.
The content of the fine powder in the reaction main body is preferably 1.0 to 2.5%, for example, 1.0%, 1.3%, 1.5%, 1.6%, 1.7%, 1.8%, 1.9%, 2.0%, 2.2%, 2.4% or 2.5%, etc., but not limited to the values recited, and other values not recited in the range are equally applicable.
The desulfurization temperature is preferably 410 to 430 ℃, and may be 410 ℃, 413 ℃, 415 ℃, 417 ℃, 419 ℃, 422 ℃, 424 ℃, 426 ℃, 428 ℃, 430 ℃, or the like, for example, but is not limited to the values recited, and other values not recited in the range are equally applicable.
Preferably, the pressure of the gasoline entering the main reaction section is 2.8-3.4 MPa, for example, 2.8MPa, 2.9MPa, 3.0MPa, 3.1MPa, 3.2MPa, 3.3MPa or 3.4MPa, etc., but the present invention is not limited to the listed values, and other values not listed in the range are equally applicable.
The density of the gasoline is preferably 35 to 40kg·m -3, and may be 35kg·m-3、35.6kg·m-3、36.2kg·m-3、36.7kg·m-3、37.3kg·m-3、37.8kg·m-3、38.4kg·m-3、38.9kg·m-3、39.5kg·m-3, 40kg·m -3, or the like, for example, but not limited to the values listed, and other values not listed in the range are applicable.
The viscosity of the gasoline is preferably 1.5 to 2.5X10 -5 Pa.s, and may be 1.5×10-5Pa·s、1.7×10-5Pa·s、1.8×10-5Pa·s、1.9×10-5Pa·s、2×10-5Pa·s、2.1×10-5Pa·s、2.2×10- 5Pa·s、2.3×10-5Pa·s、2.4×10-5Pa·s or 2.5X10 -5 Pa.s, for example, but the viscosity is not limited to the above-mentioned values, and other values not mentioned in the above range are equally applicable.
The apparent velocity of the gasoline in the reaction main section is preferably 0.27 to 0.32m·s -1, and for example, may be 0.27m·s -1、0.28m·s-1、0.29m·s-1、0.3m·s-1、0.31m·s-1 or 0.32m·s -1, etc., but is not limited to the values recited, and other values not recited in the range are equally applicable.
The invention further preferably controls the apparent speed of the reaction main body section in the range, not only can ensure stable fluidization of particles under the movement of oil gas, but also can reduce collision abrasion of the adsorbent particles as much as possible under the condition of ensuring the desulfurizing effect of the adsorbent, is beneficial to discharging fine powder carried by the adsorbent particles at a secondary solid phase outlet, reduces the load of a top filter, and prolongs the service life of a filtering part.
Preferably, the residence time of the gasoline in the reaction device is 70 to 90s, for example, 70s, 72s, 75s, 78s, 79s, 80s, 82s, 85s, 88s or 90s, etc., but not limited to the recited values, and other values not recited in the range are equally applicable.
The invention has certain limitation on the category of the adsorbent particles in the process, and the adsorbent adopted by the S-zorb technology consists of a carrier and active components, wherein the carrier mainly consists of two or more than two of aluminum oxide, silicon oxide, ferric oxide, titanium oxide and calcium oxide, and the active components generally consist of zinc oxide and one or more than one active metal, and the most commonly used active metal is 0-valent nickel or cobalt.
Compared with the prior art, the invention has at least the following beneficial effects:
(1) According to the reaction device for prolonging the service life of the top filter component, provided by the invention, the novel to-be-generated adsorbent outlet transverse pipe is additionally arranged, so that fine powder particles and adsorbent particles are prevented from reaching the reactor filter, especially, the fine powder particles are prevented from being damaged by the reactor filter, the service life of the filter is prolonged, and the operation period of the S-zorb reactor is prolonged;
(2) The reaction device for prolonging the service life of the top filter component is simple, convenient and feasible, has lower cost, is convenient to modify on the basis of the original device, can ensure the desulfurization effect of the original device, has the gasoline desulfurization rate of more than 97 percent, has the antiknock index loss of less than 0.7 and has the gasoline yield of more than 99.5 percent;
(3) The reaction device for prolonging the service life of the top filtering component has more remarkable effect of optimizing the entrainment of fine powder, wherein under the preferable process conditions, the solid flow of the fine powder particles at the top outlet can be reduced to 2.352 X10 -4 kg/s, more preferably to below 1.600X10 -4 kg/s, more preferably to below 1.203X 10 -4 kg/s;
(4) The method for desulfurizing the gasoline can reduce the entrainment of about 49.15 percent of fine powder by optimizing the process parameters, can effectively protect a reactor filter, improves the recycling rate of adsorbent particles, and further reduces the cost of the process flow.
Drawings
FIG. 1 is a reaction apparatus for extending the life of a top filter element provided in example 1 of the present invention.
FIG. 2 is a reaction apparatus for extending the life of a top filter element provided in example 2 of the present invention.
FIG. 3 is a reaction apparatus according to comparative example 1 of the present invention.
In the figure: 1. a reaction main body section; 2. a feed gas phase inlet; 3. a fluid distribution plate; 4. a blister dispenser; 5. a blister; 6. a distributor riser; 7. fresh adsorbent solid phase inlet; 8. a spent adsorbent solid phase outlet; 9. a transition section; 10. a sedimentation section; 11. a partial sphere portion; 12. a top outlet; 13. a filter member; 14. and a secondary solid phase outlet.
Detailed Description
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
The present invention will be described in further detail below. The following examples are merely illustrative of the present invention and are not intended to represent or limit the scope of the invention as defined in the claims.
It is to be understood that in the description of the present invention, the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus are not to be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
It should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.
It will be appreciated by those skilled in the art that the present invention necessarily includes the necessary piping, conventional valves and general pumping equipment for achieving the process integrity, but the foregoing is not a major inventive aspect of the present invention, and that the present invention is not particularly limited thereto as the skilled artisan may add the layout based on the process flow and the equipment configuration options or by himself.
Example 1
The embodiment provides a reaction device for prolonging the service life of a top filtering component, which is shown in fig. 1, and sequentially comprises a sedimentation section 10, a transition section 9 and a reaction main body section 1 from top to bottom; the cross section of the sedimentation section 10 is larger than that of the reaction main body section 1; a filter element 13 is provided at the top of the reactor.
The reaction device further comprises a secondary solid phase outlet 14 arranged at the transition section 9.
The reaction device is an S-zorb device.
The height ratio of the sedimentation section 10 and the transition section 9 is 2.5:1. The height ratio of the sedimentation section 10 to the reaction main body section 1 is 0.11:1. The diameter ratio of the sedimentation section 10 to the reaction main section 1 is 2:1.
When the secondary solid phase outlet 14 is arranged on the transition section 9, the distance between the secondary solid phase outlet 14 and the top of the transition section 9 is 0.4m.
The top of the reaction device is provided with a top outlet 12; the filter element 13 is connected to the top outlet 12. The top of the reaction device is a partial sphere 11. The secondary solid phase outlet 14 is a horizontal transverse outlet. The bottom of the reaction main body section 1 is provided with a raw material gas phase inlet 2.
A fluid distribution device is provided at the inner lower side of the reaction body section 1. The fluid distribution device comprises a fluid distribution plate 3 and a blister 5 distributor 4 arranged on the fluid distribution plate 3. The blister 5 distributor 4 comprises a distributor riser 6 and blisters 5 arranged on the distributor riser 6.
A fresh adsorbent solid phase inlet 7 is arranged on one side of the lower part of the reaction main body section 1. The included angle between the fresh adsorbent solid phase inlet 7 and the vertical direction is 30 degrees. The fresh adsorbent solid phase inlet 7 is at a distance of 1.5m from the bottom of the reaction body section 1.
One side of the upper part of the reaction main body section 1 is provided with a spent adsorbent solid-phase outlet 8. The solid phase outlet 8 of the spent adsorbent is horizontally arranged. The distance of the spent adsorbent solid phase outlet 8 from the top of the reaction body section 1 was 7.0m.
Example 2
The embodiment provides a reaction device for prolonging the service life of a top filtering component, which is shown in fig. 2, and sequentially comprises a sedimentation section 10, a transition section 9 and a reaction main body section 1 from top to bottom; the cross section of the sedimentation section 10 is larger than that of the reaction main body section 1; a filter element 13 is provided at the top of the reactor.
The reaction device further comprises a secondary solid phase outlet 14 arranged in the sedimentation section 10.
The reaction device is an S-zorb device.
The height ratio of the sedimentation section 10 and the transition section 9 is 2.5:1. The height ratio of the sedimentation section 10 to the reaction main body section 1 is 0.11:1. The diameter ratio of the sedimentation section 10 to the reaction main section 1 is 2:1.
When the secondary solid phase outlet 14 is arranged in the sedimentation section 10, the distance from the secondary solid phase outlet 14 to the bottom of the sedimentation section 10 is 0.5m.
The top of the reaction device is provided with a top outlet 12; the filter element 13 is connected to the top outlet 12. The top of the reaction device is a partial sphere 11. The secondary solid phase outlet 14 is a horizontal transverse outlet. The bottom of the reaction main body section 1 is provided with a raw material gas phase inlet 2.
A fluid distribution device is provided at the inner lower side of the reaction body section 1. The fluid distribution device comprises a fluid distribution plate 3 and a blister 5 distributor 4 arranged on the fluid distribution plate 3. The blister 5 distributor 4 comprises a distributor riser 6 and blisters 5 arranged on the distributor riser 6.
A fresh adsorbent solid phase inlet 7 is arranged on one side of the lower part of the reaction main body section 1. The included angle between the fresh adsorbent solid phase inlet 7 and the vertical direction is 30 degrees. The fresh adsorbent solid phase inlet 7 is at a distance of 1.5m from the bottom of the reaction body section 1.
One side of the upper part of the reaction main body section 1 is provided with a spent adsorbent solid-phase outlet 8. The solid phase outlet 8 of the spent adsorbent is horizontally arranged. The distance of the spent adsorbent solid phase outlet 8 from the top of the reaction body section 1 was 7.0m.
Example 3
The embodiment provides a reaction device for prolonging the service life of a top filtering component, which comprises a sedimentation section, a transition section and a reaction main body section from top to bottom in sequence; the cross section of the sedimentation section is larger than that of the reaction main body section; a filter element is arranged at the top of the reaction device.
The reaction device also comprises a secondary solid phase outlet arranged at the sedimentation section and the transition section.
The reaction device is an S-zorb device.
The height ratio of the sedimentation section to the transition section is 1.5:1. The height ratio of the sedimentation section to the reaction main section is 0.2:1. The diameter ratio of the sedimentation section to the reaction main section is 1.7:1.
When the secondary solid phase outlet is arranged in the sedimentation section, the distance between the secondary solid phase outlet and the bottom of the sedimentation section is 0.4m.
When the secondary solid phase outlet is arranged on the transition section, the distance between the secondary solid phase outlet and the top of the transition section is 0.6m.
The top of the reaction device is provided with a top outlet; the filter element is connected to the top outlet. The top of the reaction device is a top sphere part. The secondary solid phase outlet is a horizontal transverse outlet. The bottom of the reaction main body section is provided with a raw material gas phase inlet.
A fluid distribution device is disposed at an interior underside of the reaction body section. The fluid distribution device includes a fluid distribution plate and a blister dispenser disposed on the fluid distribution plate. The blister distributor includes a distributor riser and blisters disposed on the distributor riser.
A fresh adsorbent solid-phase inlet is arranged at one side of the lower part of the reaction main body section. The included angle between the solid phase inlet of the fresh adsorbent and the vertical direction is 45 degrees. The distance of the fresh adsorbent solid phase inlet from the bottom of the reaction body section was 2.3m.
One side of the upper part of the reaction main body section is provided with a solid phase outlet of the adsorbent to be regenerated. The solid phase outlet of the spent adsorbent is horizontally arranged. The distance from the solid phase outlet of the spent adsorbent to the top of the reaction main section is 7.4m.
Example 4
This example provides a reaction apparatus for extending the life of the top filter element, which is the same as example 1 except that the secondary solid phase outlet is 0.8m from the top of the transition section.
Example 5
This example provides a reaction apparatus for extending the life of the top filter element, which is the same as example 1 except that the secondary solid phase outlet is 0.2m from the top of the transition section.
Example 6
This example provides a reaction apparatus for extending the life of the top filter element, which is the same as example 2 except that the distance of the bottom of the secondary solid phase outlet settling section is 0.8 m.
Example 7
This example provides a reaction apparatus for extending the life of the top filter element, which is the same as example 2 except that the distance of the bottom of the secondary solid phase outlet settling section is 0.2 m.
Comparative example 1
This example provides a reaction apparatus as shown in FIG. 3, which is the same as that of example 1 except that a secondary solid phase outlet is not provided.
Application example 1
The present application provides a method for desulfurizing gasoline using the reaction apparatus for prolonging the service life of the top filter element of example 1, the method comprising:
Desulfurizing the gasoline in the main reaction section from bottom to top through adsorbent particles, generating fine powder by collision of the adsorbent particles, conveying the adsorbent particles and the fine powder upwards under the flowing action of the gasoline, sequentially passing through a transition section and a sedimentation section, and discharging part of the fine powder through a secondary solid phase outlet of the sedimentation section and/or the transition section; and filtering the adsorbent particles and the fine powder through a filter element to obtain the desulfurized gasoline product.
Application examples 2 to 7 and application comparative example 1 were performed using the devices of examples 2 to 7 and comparative example 1, respectively, wherein the operation parameters of application examples 4 to 7 and application comparative example 1 were the same as those of application example 1.
Application example 8
This application example provides a method for desulfurizing gasoline using the reaction apparatus for extending the life of the top filter member of example 1, which is the same as that of application example 1 except that the average particle diameter of the adsorbent particles is 30 μm.
Application example 9
This application example provides a method for desulfurizing gasoline by using the reaction apparatus for prolonging the life of the top filter member of example 1, which is the same as that of application example 1 except that the apparent velocity of gasoline in the main reaction section is 0.5 m.s -1.
Application example 10
This application example provides a method for desulfurizing gasoline by using the reaction apparatus for prolonging the life of the top filter member of example 1, which is the same as that of application example 1 except that the apparent velocity of gasoline in the main reaction section is 0.1m·s -1.
Application example 11
The present application example was the same as that of application example 1 except that the apparatus of example 2 was used for desulfurizing gasoline.
The operation parameters of application examples 1 to 3 are shown in table 1.
TABLE 1
The corresponding S-zorb reactor device adopts Gambit ® 2.4.4 to carry out geometric structure and grid division, and the simulation calculation adopts ANSYSFluent ® 17.0 solver; uniformly mixing the supported Ni/ZnO adsorbent taking the oxide and the composite oxide as carriers with the fine powder particles according to the corresponding solid content and volume ratio, performing simulation calculation for 160s by adopting the parameters, stabilizing the fluidization system, and continuously calculating the homogenization data statistics when 10s are performed. The reactor top outlet fines solids flow rate is shown in table 2.
TABLE 2
(1) According to comprehensive application examples 1-3, the reaction device for prolonging the service life of the top filtering component can greatly reduce the solid flow rate of top outlet fine powder particles, wherein the solid flow rate of the top outlet fine powder particles is controlled below 1.600X10 -4 kg/s, and meanwhile, the original desulfurization effect can be ensured, the desulfurization rate is above 97%, the antiknock index loss is less than 0.7, and the gasoline yield is above 99.5%;
(2) As can be seen from the comprehensive application examples 1 and 4-5, the distance from the secondary solid phase outlet to the top of the transition section in application example 1 is 0.4m, and compared with the distances from the secondary solid phase outlet to the top of the transition section in application examples 4-5 of 0.8m and 0.2m, respectively, the solid flow rate of the fine powder particles at the top outlet in application example 1 is 1.432×10 -4 kg/s, and the solid flow rates are as high as 1.652 ×10 -4 kg/s and 1.861 ×10 -4 kg/s in application examples 4-5, respectively; the desulfurization rates of the three are all above 97%; this shows that the invention further reduces the entrainment of fine powder by preferably locating the secondary solid phase outlet at a specific location; comprehensive application examples 2 and application examples 6-7 have class conclusions; as can be seen from the comprehensive application examples 1 and 11, the invention preferably sets the secondary solid phase outlet at the transition section, thereby further reducing the entrainment of fine powder and prolonging the service life of the filter;
(3) As can be seen from the combination of application examples 1 and 8 to 10, the average particle diameter of the adsorbent particles in application example 1 is 60.2 μm, and the apparent speed of gasoline is 0.2968 m.s -1; compared with the adsorbent particles in application example 8, the average particle diameter is only 30 μm, the apparent gas velocity in application examples 9-10 is respectively 2.016 m.s -1 and 1.864 m.s -1, the top outlet fine powder particle solid flow rate in application example 1 is far lower than that in application examples 8-9, and the fine powder particle solid flow rate in application example 10 is only 0.991 m.s -1, but fluidization of the solid particles is difficult to realize, and the desulfurization efficiency is obviously reduced, so that the invention achieves the aim of reducing the final top outlet fine powder particle solid flow rate by mutually matching by selecting proper adsorbent particle size and the apparent velocity of gasoline on the basis of improving a device, and can prolong the service life of a filter part.
In summary, the reaction device for prolonging the service life of the top filtering component and the method for desulfurizing gasoline provided by the invention can improve the entrainment condition of fine powder in the reactor, prolong the service life of the filter, remarkably prolong the operation period of the S-zorb reactor and improve the economic benefit of enterprises.
The detailed structural features of the present invention are described in the above embodiments, but the present invention is not limited to the above detailed structural features, that is, it does not mean that the present invention must be implemented depending on the above detailed structural features. It should be apparent to those skilled in the art that any modifications of the present invention, equivalent substitutions of selected components of the present invention, addition of auxiliary components, selection of specific modes, etc., are within the scope of the present invention and the scope of the disclosure.

Claims (28)

1. The reaction device for prolonging the service life of the top filtering component is characterized by comprising a sedimentation section, a transition section and a reaction main body section from top to bottom in sequence;
the cross section of the sedimentation section is larger than that of the reaction main body section;
a filter component is arranged at the top of the reaction device;
the reaction device also comprises a secondary solid phase outlet arranged at the sedimentation section and/or the transition section;
when the secondary solid phase outlet is arranged in the sedimentation section, the distance between the secondary solid phase outlet and the bottom of the sedimentation section is 0.4-0.6 m;
when the secondary solid phase outlet is arranged at the transition section, the distance between the secondary solid phase outlet and the top of the transition section is 0.5-0.6 m.
2. The reaction device of claim 1, wherein the height ratio of the settling section to the transition section is 1-2.5:1.
3. The reaction device of claim 1, wherein the height ratio of the sedimentation section to the reaction main section is 0.11-0.2:1.
4. The reaction device of claim 1, wherein the diameter ratio of the sedimentation section to the reaction main section is 1.7-2.3:1.
5. The reaction device of claim 1, wherein the top of the reaction device is provided with a top outlet; the filter element is connected to the top outlet.
6. The reaction apparatus of claim 1, wherein the secondary solid phase outlet is a horizontal lateral outlet.
7. The reaction apparatus of claim 1, wherein the bottom of the reaction body section is provided with a feed gas phase inlet.
8. The reaction device of claim 1, wherein a fluid distribution device is provided at the inner underside of the reaction body section.
9. The reaction apparatus of claim 8 wherein the fluid distribution apparatus comprises a fluid distribution plate and a blister distributor disposed on the fluid distribution plate.
10. The reaction apparatus of claim 9 wherein the bubble cap sparger comprises a sparger riser and bubbles disposed on the sparger riser.
11. The reaction apparatus of claim 1, wherein a lower side of the reaction main section is provided with a fresh adsorbent solid phase inlet.
12. The reaction device of claim 11, wherein the fresh adsorbent solid phase inlet is at an angle of 30-45 ° to the vertical.
13. The reaction apparatus of claim 11, wherein the fresh adsorbent solid phase inlet is at a distance of 1.5 to 2.3m from the bottom of the reaction body section.
14. The reaction apparatus according to claim 1, wherein the upper side of the reaction main body section is provided with a spent adsorbent solid phase outlet.
15. The reaction apparatus of claim 14 wherein the spent adsorbent solid phase outlet is disposed horizontally.
16. The reaction apparatus of claim 14, wherein the spent adsorbent solid phase outlet is 6.9-7.4 m from the top of the reaction body section.
17. A method for desulfurizing gasoline using the reaction apparatus for extending the life of the top filter element of any one of claims 1 to 16, said method comprising:
Desulfurizing the gasoline in the main reaction section from bottom to top through adsorbent particles, generating fine powder by collision of the adsorbent particles, conveying the adsorbent particles and the fine powder upwards under the flowing action of the gasoline, sequentially passing through a transition section and a sedimentation section, and discharging part of the fine powder through a secondary solid phase outlet of the sedimentation section and/or the transition section; and filtering the adsorbent particles and the fine powder through a filter element to obtain the desulfurized gasoline product.
18. The method of claim 17, wherein the fine powder has a particle size of 20 μm or less.
19. The method of claim 17, wherein the adsorbent particles have an average particle size of 40-80 μm.
20. The method of claim 17, wherein the adsorbent particles have a particle density of 0.9 to 1.1 kg-m -3.
21. The method of claim 17, wherein the initial solids content in the reaction body section is 50-70%.
22. The method of claim 17, wherein the fines content in the reaction mass is 1.0-2.5%.
23. The method of claim 17, wherein the desulfurization is performed at a temperature of 410-430 ℃.
24. The method of claim 17, wherein the gasoline enters the reaction main section at a pressure of 2.8 to 3.4mpa.
25. The method of claim 17, wherein the gasoline has a density of 35-40 kg-m -3.
26. The method of claim 17, wherein the gasoline has a viscosity of 1.5 to 2.5 x 10 -5 Pa-s.
27. The method of claim 17, wherein the gasoline has an apparent velocity in the reaction mass section of 0.27 to 0.32 m-s -1.
28. The method of claim 17, wherein the residence time of the gasoline in the reaction device is 70-90 s.
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