CN113750954A - Hydrocarbon adsorption material applied to engine air inlet assembly and air inlet pipeline and preparation method and application thereof - Google Patents

Hydrocarbon adsorption material applied to engine air inlet assembly and air inlet pipeline and preparation method and application thereof Download PDF

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CN113750954A
CN113750954A CN202010508008.4A CN202010508008A CN113750954A CN 113750954 A CN113750954 A CN 113750954A CN 202010508008 A CN202010508008 A CN 202010508008A CN 113750954 A CN113750954 A CN 113750954A
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hydrocarbon
adsorption
layer
parts
adhesive
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CN113750954B (en
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姚运振
李柏烨
刘文强
字洪
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Guangzhou Huachuang Chemical Material Technology Development Co ltd
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Guangzhou Huachuang Chemical Material Technology Development Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
    • B01J20/08—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04 comprising aluminium oxide or hydroxide; comprising bauxite
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
    • B01J20/103—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate comprising silica
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
    • B01J20/24—Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
    • B01J20/26—Synthetic macromolecular compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
    • B01J20/28033—Membrane, sheet, cloth, pad, lamellar or mat
    • B01J20/28035—Membrane, sheet, cloth, pad, lamellar or mat with more than one layer, e.g. laminates, separated sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/3042—Use of binding agents; addition of materials ameliorating the mechanical properties of the produced sorbent
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
    • F02M35/10222—Exhaust gas recirculation [EGR]; Positive crankcase ventilation [PCV]; Additional air admission, lubricant or fuel vapour admission

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  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Separation Of Gases By Adsorption (AREA)

Abstract

One or more embodiments of the present disclosure provide a hydrocarbon adsorbing material applied to an intake assembly and an intake pipe of an engine, and a preparation method and an application thereof, where the hydrocarbon adsorbing material includes a hydrocarbon adsorbing layer, and the hydrocarbon adsorbing layer includes the following components in parts by weight: 20-90 parts of an adsorption medium; 5-60 parts of fibers; 5-30 parts of an adhesive. The carbon-hydrogen adsorption material has high strength and is not easy to layer, the fibers and the adsorption medium are interwoven into a net structure, the fibers are uniformly distributed on each layer to provide strength, and the adsorption medium cannot delaminate in practical application to cause the problem of falling off; in addition, the fiber needs less adhesive for providing strength, the adsorption medium can be compounded at will, the quality of the adsorption medium can be effectively improved under the condition of the same area, and the adsorption efficiency and the adsorption quantity of the product are greatly improved.

Description

Hydrocarbon adsorption material applied to engine air inlet assembly and air inlet pipeline and preparation method and application thereof
Technical Field
One or more embodiments of the present disclosure relate to the technical field of fuel vapor emission control of an automobile air intake system, and in particular, to a hydrocarbon adsorbing material applied to an engine air intake assembly and an air intake pipeline, and a preparation method and an application thereof.
Background
When the automobile is parked, some of the incompletely combusted hydrocarbons may slowly penetrate the filter from the air intake system and overflow into the atmosphere with the change of the fuel tank pressure, causing environmental pollution, and with the improvement of the national emission regulations, various methods have been tried in the existing automobile main engine factories to solve the problem and reduce the emission of pollutants. However, the prior art has the problems that the carbon powder is easy to fall off, the adsorption effect is difficult to improve, and the like.
Disclosure of Invention
In view of the above, an object of one or more embodiments of the present disclosure is to provide a hydrocarbon adsorbing material applied to an intake assembly and an intake pipe of an engine, and a preparation method and an application thereof.
In view of the above, one or more embodiments of the present disclosure provide a hydrocarbon adsorbing material applied to an intake assembly and an intake pipe of an engine, including a hydrocarbon adsorbing layer, where the hydrocarbon adsorbing layer includes the following components in parts by weight:
20-90 parts of an adsorption medium;
5-60 parts of fibers;
5-30 parts of an adhesive.
In one or more embodiments of the present disclosure, optionally, the hydrocarbon adsorbing layer includes the following components in parts by weight:
60-80 parts of an adsorption medium;
10-20 parts of fibers;
10-20 parts of an adhesive.
In one or more embodiments of the present disclosure, optionally, the gram weight of each component in the hydrocarbon adsorbing layer is in a range of 1-20g/m2(ii) a Preferably, the gram weight range of each component in the hydrocarbon adsorption layer is 3-10 g/m2。
In one or more embodiments of the present disclosure, optionally, the adsorption medium is selected from one or more of activated carbon, activated carbon fiber, silica gel, alumina, and carbon molecular sieve;
and/or the fiber is selected from one or more of wood pulp fiber, polyester fiber, polypropylene fiber, tencel, aramid fiber, polyamide fiber, polyphenylene benzoxazole fiber, glass fiber, polyvinyl alcohol fiber or viscose fiber;
and/or the adhesive is selected from one or more of a sodium silicate adhesive, a copper oxide-phosphoric acid adhesive, an epoxy resin adhesive, a trialdehyde adhesive, a polyurethane adhesive, an acrylate adhesive, a modified phenolic adhesive or a polyvinyl acetate adhesive;
preferably, the adsorption medium is granular or powdery activated carbon selected from any one or more of activated carbon with a particle size ranging from 0.1 μm to 2000 μm.
In one or more embodiments of the present disclosure, optionally, in the hydrocarbon adsorbing layer, the fibers and the adsorbing medium are interwoven into a net structure, and the fibers are uniformly distributed in each layer to provide strength.
In one or more embodiments of the present disclosure, optionally, the hydrocarbon adsorbing material further includes a composite welding layer, where the composite welding layer includes the following components in parts by weight:
1-20 parts of welding layer material;
1-10 parts of compound glue.
In one or more embodiments of the present disclosure, optionally, the welding layer material is selected from one or more of a polypropylene film, a nylon film, a polyethylene film, or a non-woven fabric;
and/or the composite adhesive is selected from at least one of epoxy resin, phenolic resin, polyurethane resin or aminoplast;
preferably, the hydrocarbon adsorption layer is bonded with the welding layer material through the composite glue.
Based on the same inventive concept, one or more embodiments of the present specification further provide a method for preparing the above hydrocarbon adsorbing material, where the method for preparing the hydrocarbon adsorbing layer includes the following steps:
the fibers and the adsorption medium are respectively dispersed and then mixed in a pulp tank;
feeding the mixed slurry to a paper machine, carrying out pulp flushing, forming on the paper machine, and drying; wherein the adhesive is mixed with the adsorption medium and the fibers to be directly made into paper, or the adhesive is applied to a dry material;
and (5) drying, namely coiling the dried material and then coiling.
In one or more embodiments of the present disclosure, optionally, the method for preparing the hydrocarbon adsorbing material further includes the following steps;
and bonding the hydrocarbon adsorption layer and the welding layer material together through composite glue, and then slitting.
Based on the same inventive concept, one or more embodiments of the specification further provide application of the hydrocarbon adsorbing material in adsorbing hydrocarbons in an air inlet assembly and an air inlet pipeline of an engine.
In one or more embodiments of the present disclosure, optionally, the hydrocarbon adsorbing layer is fixed in an engine intake assembly and an intake pipe, and the specific working process is as follows:
when the engine stops working: the fuel steam hydrocarbon leaked from the engine overflows to the air inlet assembly and the air inlet pipeline and is absorbed by the hydrocarbon adsorption layer;
when the engine is started, air enters from the air inlet, and simultaneously, hydrocarbon absorbed by the hydrocarbon adsorption layer is desorbed and then flows into the engine to be combusted;
preferably, the hydrocarbon adsorption layer is fixed in the engine air inlet assembly and the air inlet pipeline through a composite welding layer.
From the above, it can be seen that the hydrocarbon adsorbing material applied to the engine intake assembly and the intake pipeline, and the preparation method and the application thereof provided by one or more embodiments of the present disclosure have the advantages that the hydrocarbon adsorbing material has high strength and is not easy to delaminate, fibers and adsorbing media are interwoven into a mesh structure, the fibers are uniformly distributed on each layer to provide strength, and the adsorbing media cannot delaminate to cause a shedding problem in practical application; in addition, the fiber needs less adhesive for providing strength, the adsorption medium can be compounded at will, the quality of the adsorption medium can be effectively improved under the condition of the same area, and the adsorption efficiency and the adsorption quantity of the product are greatly improved.
Drawings
In order to more clearly illustrate one or more embodiments or prior art solutions of the present specification, the drawings that are needed in the description of the embodiments or prior art will be briefly described below, and it is obvious that the drawings in the following description are only one or more embodiments of the present specification, and that other drawings may be obtained by those skilled in the art without inventive effort from these drawings.
FIG. 1 is a schematic diagram of a prior art hydrocarbon adsorbent material;
FIG. 2 is a schematic structural diagram of a hydrocarbon adsorbent material according to one or more embodiments of the present disclosure;
FIG. 3a is a pictorial representation of a hydrocarbon adsorbing layer in accordance with one or more embodiments of the present disclosure;
FIG. 3b is a pictorial view of a weld layer material according to one or more embodiments of the present disclosure;
FIG. 3c is a physical cross-sectional view of a hydrocarbon adsorbent material according to one or more embodiments of the present disclosure;
FIG. 4 is a diagram of various shapes of hydrocarbon adsorbent materials in one or more embodiments of the present disclosure;
FIG. 5 is a flow diagram illustrating a process for producing a hydrocarbon adsorbent material according to one or more embodiments of the present disclosure;
FIG. 6 is a schematic diagram of the application of the hydrocarbon adsorbing material in the air intake assembly and the air intake pipeline of the engine in one or more embodiments of the present disclosure.
Detailed Description
For the purpose of promoting a better understanding of the objects, aspects and advantages of the present disclosure, reference is made to the following detailed description taken in conjunction with the accompanying drawings.
It is to be noted that unless otherwise defined, technical or scientific terms used in one or more embodiments of the present specification should have the ordinary meaning as understood by those of ordinary skill in the art to which this disclosure belongs.
As described in the background section, when the automobile is parked, some of the incompletely combusted hydrocarbons may slowly penetrate the filter from the intake system and escape to the atmosphere with the change of the fuel tank pressure, causing environmental pollution, and as the national emission regulations are raised, various methods have been attempted by the existing automobile main engine factories to reduce the emission of pollutants.
Patent CN107435603A (patent name: HC adsorption device, applicant: great wall automobile gmbh, application No. 201610361642.3) describes: the method comprises the following steps that a plugging part and a driving mechanism are arranged in an air inlet pipeline, when an automobile is started, the plugging part is driven by the driving mechanism to completely open the air inlet pipeline, so that the air inlet pipeline is in an open state in which air inlet is not blocked; when the automobile stops, the plugging part is closed under the control of the driving mechanism, so that the air inlet pipeline is closed, and fuel steam cannot overflow into the filter, thereby avoiding the emission of hydrocarbon.
Patent CN101171419A (title: control of hydrocarbon emissions of air intake system, applicant: general car globes scientific operations, application No. 200680015014.4) describes: by arranging the pressure reducing valve in the fuel pump, the phenomenon that when the fuel pump stops or the temperature rises, the pressure in the fuel oil pipe is increased to cause hydrocarbon leakage is avoided.
Patent CN101052455A (patent name: evaporative emissions filter, applicant: hounwell international corporation, application number: 200580037697.9) describes an emissions filter which is made of a hydrocarbon adsorbing material with an adsorbing medium between two layers of flexible materials, and is mounted on the clean side, the dirty side and the inner wall of a resonator of the filter housing to adsorb hydrocarbon leaked from the air intake system.
Basf invented an EVAP Trap MX product that adsorbs volatized escaping hydrocarbons by spraying an activated carbon coating on the inside of the filter housing.
However, the inventor researches and discovers that various problems exist in the prior art, for example, in patent CN107435603A, the control precision required by the great wall automobile company for adding the blocking part is high, the air inlet pipe is improved greatly, and if the sensitivity is in error or the control is not good, the blocking part closes the air inlet pipe when the engine runs, which may cause accidents such as the vehicle cannot work. In patent CN101171419A, the improvement method provided by the general automobile global technology operation company is mainly to add a control valve in the oil tank to reduce the hydrocarbon overflow to the filter housing, although the hydrocarbon overflow is reduced, on one hand, the requirement for the accuracy of the control valve is high, the cost is not cheap, and at the same time, the problem is not completely solved. The EVAP Trap MX product disclosed by Basff needs a special carbon powder spraying tool, and is easy to volatilize carbon powder in the production process, so that the processing pollution is caused, the investment cost is high, the operation is complex, and the filter factory is difficult to popularize and apply.
In patent CN101052455A, the scheme provided by the hinowell international corporation is that the material carrying activated carbon in the middle of the non-woven fabric is very close to the material of the filter element of the air conditioner of the vehicle, but this material has many disadvantages, for example, too many adsorption media such as carbon powder of the hydrocarbon adsorption material can cause the flexible materials (non-woven fabrics) of the upper and lower layers to be unable to be connected and cause layering, the usage amount of the adsorption media is limited, meanwhile, it is easy to cause workshop pollution if the adsorption media uses fine carbon powder, the adsorption media required for the product can not be too fine, which can cause small specific surface area, and the adhesive is high, which causes the activated carbon to block the pores and decrease the adsorption. Particularly, when the carbon powder is installed on a clean side shell, the non-bonding shell layer is easily deformed and even falls off under the influence of air flow due to the vibration of a vehicle, so that the carbon powder in the middle layer easily falls off from two sides and flows into an engine to cause the abrasion of the engine, as shown in figure 1.
In sum, the prior art has the problems that the carbon powder is easy to fall off, the adsorption effect is difficult to improve, the cost is high, the realization is difficult, and the like. On the basis, the hydrocarbon adsorbing material applied to the engine air inlet assembly and the air inlet pipeline and the preparation method and application thereof are provided by one or more embodiments of the specification, the hydrocarbon adsorbing material is high in strength and not easy to delaminate, fibers and adsorbing media are interwoven into a net structure, the fibers are uniformly distributed on each layer to provide strength, and the adsorbing media cannot delaminate to cause a falling problem in practical application; in addition, the fiber needs less adhesive for providing strength, the adsorption medium can be compounded at will, the quality of the adsorption medium can be effectively improved under the condition of the same area, and the adsorption efficiency and the adsorption quantity of the product are greatly improved; moreover, the carbon-hydrogen adsorption material is prepared by a paper-making wet method, and the carbon-hydrogen adsorption material is prepared by mixing fibers and an adsorption medium, so that the carbon-hydrogen adsorption material can be dispersed no matter how fine the adsorption medium is, and the carbon-hydrogen adsorption material is dispersed in water for production without volatile dust pollution, has less pollution, is low in cost and is easy to realize.
One or more embodiments of the present disclosure provide a hydrocarbon adsorbing material applied to an intake assembly and an intake pipe of an engine, including a hydrocarbon adsorbing layer, where the hydrocarbon adsorbing layer includes the following components in parts by weight:
20-90 parts of an adsorption medium;
5-60 parts of fibers;
5-30 parts of an adhesive.
In one or more embodiments of the present disclosure, optionally, the hydrocarbon adsorbing layer includes the following components in parts by weight:
60-80 parts of an adsorption medium;
10-20 parts of fibers;
10-20 parts of an adhesive.
In one or more embodiments of the present disclosure, optionally, the adsorption medium is selected from one or more of activated carbon, activated carbon fiber, silica gel, alumina, and carbon molecular sieve;
and/or the fiber is selected from one or more of wood pulp fiber, Polyester (PET) fiber, polypropylene (PP) fiber, tencel, aramid fiber, polyamide fiber, Polyphenylene Benzoxazole (PBO) fiber, glass fiber, polyvinyl alcohol (PVA) fiber or viscose fiber;
and/or the adhesive is selected from one or more of sodium silicate adhesive, copper oxide-phosphoric acid adhesive, epoxy resin adhesive, trialdehyde adhesive, polyurethane adhesive, acrylate adhesive, modified phenolic adhesive or polyvinyl acetate adhesive.
In this specification, the adsorption medium alone or the fibers themselves have no binding ability, and an adhesive is added to make the fibers and the adsorption medium mutually interwoven into a mesh structure.
In the description, in the hydrocarbon adsorption layer, the adsorption medium has strong adsorption capacity and is used for adsorbing hydrocarbons in an engine air intake assembly and an air intake pipeline, and the fibers are used as carriers of the adsorption medium. The inventor researches and finds that the problems of insufficient strength and easy powder falling of the hydrocarbon adsorption layer generally exist when the using amount of the adsorption medium is large, the use amount of the fiber is increased by reducing the using amount of the adsorption medium, the adsorption efficiency of the hydrocarbon adsorption layer is reduced, the use requirement cannot be met, and the two are difficult to balance. The inventor researches and discovers that when the adsorption medium and the adhesive are in the dosage range in the specification, the adsorption medium is large in quantity, the fiber dosage is small, and the proportion of the adsorption medium and the adhesive is balanced to ensure that the hydrocarbon adsorption layer has high adsorption efficiency and sufficient use strength. In addition, within the dosage range of the invention, the fiber needs less adhesive for providing strength, the adsorption medium can be compounded at will, the quality of the adsorption medium can be effectively improved under the condition of the same area, and the adsorption efficiency and the adsorption quantity of the product are greatly improved.
In one or more embodiments of the present disclosure, preferably, the hydrocarbon adsorbing layer includes the following components in parts by weight:
70 parts of adsorption medium;
15 parts of fiber;
15 parts of an adhesive.
In the invention, within the dosage range, the product has enough use strength, and the adsorption efficiency and the adsorption quantity of the product can be maximized.
In one or more embodiments of the present disclosure, optionally, the grammage of each component in the hydrocarbon adsorbing layer ranges from 1 g/m to 20g/m2(ii) a Preferably, the gram weight range of each component in the hydrocarbon adsorption layer is 3-10 g/m2。
In one or more embodiments of the present disclosure, optionally, the adsorption medium is granular or powdered activated carbon, and the particle size of the activated carbon is in a range of 0.1 μm to 2000 μm. The carbon-hydrogen adsorption layer made up by mixing active carbon and fibre, i.e. active carbon fibre paper, has better adsorption capacity and adsorption dynamic behavior than powdered or granular active carbon. The main advantages are: firstly, the activated carbon fiber paper has small pores, narrow pore size distribution, uniform size and maximum specific surface area of 2500m2The volume per gram is 2-3 times of that of the traditional granular product; secondly, the adsorption performance is excellent, and the adsorption capacity to harmful gas components is 1-10 times of that of the traditional product; thirdly, the adsorption and desorption speed is high. The pores of the activated carbon fiber paper in the prior art are larger than those of the activated carbon fiber paper in the specification, the activated carbon fiber paper is generally used in a filter element of a filter, the adsorption efficiency is low, the pores of the activated carbon fiber paper in the specification are smaller, the pore size distribution is narrow, the size and the size are uniform, the specific surface area is large, and the activated carbon fiber paper is applied to an engine air inlet assembly and an air inlet pipeline.
In this specification, the engine intake assembly includes an air cleaner assembly, an intake duct, a resonator, and the like. Air is filtered by the filter to remove impurities, enters the air inlet pipeline through the air inlet pipeline, is mixed with gasoline sprayed by the oil nozzle to form fuel oil mixed gas with a proper proportion, and is sent into the cylinder by the air inlet valve to ignite and burn to generate power. For a carbureted or throttle body gasoline injection engine, the intake line refers to the intake line after the carburettor or throttle body and before the cylinder head intake duct. Its function is to distribute the mixture of air and fuel oil from carburetor or throttle body to the intake channel of each cylinder. The hydrocarbon adsorbing layer in this specification is mainly installed inside the filter case, the intake duct, the resonator, and the like.
In one or more embodiments of the present disclosure, as shown in fig. 2 and 3a, in the hydrocarbon adsorbing layer, the fibers and the adsorbing medium are interwoven into a net structure, and the fibers are uniformly distributed in each layer to provide strength, so that the adsorbing medium does not delaminate in practical applications to cause a shedding problem.
In this specification, hydrocarbon adsorbing material uses hydrocarbon adsorbed layer as the main part, and whether composite welding layer can select to choose according to practical application, and whether composite welding layer's use does not influence the adsorption capacity and the adsorption efficiency of hydrocarbon adsorbed layer moreover. In one or more embodiments of the present disclosure, optionally, the hydrocarbon adsorbing material further includes a composite welding layer, where the composite welding layer includes the following components in parts by weight:
1-20 parts of welding layer material;
1-10 parts of compound glue.
In one or more embodiments of the present disclosure, optionally, the welding layer material is one or more selected from a polypropylene (PP) film, a nylon (PA) film, a Polyethylene (PE) film, or a non-woven fabric, and the structure is shown in fig. 3 b;
the composite adhesive can be composite resin, which is divided into thermoplastic type and thermosetting type, and is selected from one or more of epoxy resin, phenolic resin, polyurethane resin or aminoplast. As shown in fig. 2 and 3c, preferably, the hydrocarbon adsorbing layer is bonded to the welding layer material through the compound glue.
The hydrocarbon adsorption layer in the specification can be fixed in the engine intake assembly and the intake pipeline in various ways such as welding (welding layer needs to be compounded), gluing, injection molding and the like, and optionally, the hydrocarbon adsorption layer is bonded with the welding layer material through the compound glue and is fixed in the engine intake assembly and the intake pipeline.
The hydrocarbon adsorbent material of the present description is used in an air induction system assembly to enhance the control of evaporative emissions from fuel. Wherein, the shape of the hydrocarbon adsorbing material in the shell can be various according to actual needs, as shown in fig. 4.
Based on the same inventive concept, as shown in fig. 5, one or more embodiments of the present specification further provide a method for preparing the above hydrocarbon adsorbing material, where the method for preparing the hydrocarbon adsorbing layer includes the following steps:
the fibers and the adsorption medium are respectively dispersed and then mixed in a pulp tank;
feeding the mixed slurry to a paper machine, carrying out pulp flushing, forming on the paper machine, and drying; the adhesive can be added, mixed and enhanced by one of the following two modes, can be mixed with an adsorption medium and fibers in a pulp tank to be directly made into paper, or can be applied to a dry material by other roller or spraying modes to be enhanced by resin; wherein the forming mode can be one or more of long net, round net and inclined net combined with paper making; the drying is carried out at the temperature of 60-150 ℃;
drying, namely coiling and coiling the dried material; the drying is carried out at the temperature of 80-160 ℃.
The carbon-hydrogen adsorption layer is prepared by a paper-making wet method, and the carbon-hydrogen adsorption layer is prepared by mixing fibers and an adsorption medium, so that the carbon-hydrogen adsorption layer can be dispersed no matter how fine the adsorption medium is, and the carbon-hydrogen adsorption layer is not polluted by volatile dust in water production, has low cost and is easy to realize.
The hydrocarbon adsorption layer can be selected according to actual conditions whether to use composite glue to bond welding layer materials together, in one or more embodiments of the specification, optionally, the preparation method further comprises the following steps;
and bonding the hydrocarbon adsorption layer and the welding layer material together through composite glue, and then slitting, wherein in practical application, the hydrocarbon adsorption material can be slit into different sizes according to actual requirements.
The hydrocarbon adsorbing material of the present specification solves the following problems of the prior art:
(1) the carbon-hydrogen adsorption material is prepared by a paper-making wet method, and the carbon-hydrogen adsorption material is prepared by mixing fibers and an adsorption medium, so that the carbon-hydrogen adsorption material can be dispersed no matter how fine the adsorption medium is, the carbon-hydrogen adsorption material is dispersed in water for production, has no volatile dust pollution, has less pollution and low cost, and is easy for mass production and portable installation.
(2) The product has high strength and is not easy to layer, the fibers and the adsorption medium are interwoven into a net structure, and the fibers are uniformly distributed on each layer to provide strength. The practical application can not cause the problem of falling off due to delamination.
(3) The viscose needed for the strength provided by the fibers is less, and meanwhile, the coarse carbon powder and the fine carbon powder can be compounded at will, so that the quality of an adsorption medium can be effectively improved under the condition of the same area, and the adsorption efficiency and the adsorption capacity of a product are greatly improved.
Based on the same inventive concept, one or more embodiments of the present specification also provide for the use of hydrocarbon adsorbing materials for adsorbing hydrocarbons in engine intake assemblies and intake lines.
In one or more embodiments of the present disclosure, as shown in fig. 6, the hydrocarbon adsorbing layer is fixed in an intake assembly and an intake pipeline of an engine, and the specific working process is as follows:
when the engine stops working: the hydrocarbon of fuel steam leaked from the engine overflows to an air inlet assembly and an air inlet pipeline and is absorbed by the hydrocarbon adsorption layer 1;
when the engine is started, air enters from the air inlet, and hydrocarbon absorbed by the hydrocarbon adsorption layer 1 is desorbed and flows into the engine to be combusted.
Preferably, the hydrocarbon adsorption layer is fixed in the engine intake assembly and the intake pipeline through a composite welding layer, and specifically comprises: the hydrocarbon adsorption layer is bonded with the welding layer material through composite resin and is arranged on the inner sides of the filter shell, the air inlet pipeline, the resonator and the like.
The technical solutions of one or more embodiments of the present specification are described in detail below with reference to specific embodiments.
To be noted, in the following examples, 1 part corresponds to 6g/m2。
EXAMPLE 1 preparation of a Hydrocarbon adsorbing Material
In this embodiment, the hydrocarbon adsorbing material comprises a hydrocarbon adsorbing layer, and comprises the following components by mass:
70 portions of powdered activated carbon, 420g/m2The average particle size of the powdered activated carbon is 10 μm; 15 parts of wood pulp fiber, 90g/m2(ii) a 15 parts of polyurethane adhesive, 90g/m2；
The preparation method of the hydrocarbon adsorption layer comprises the following steps:
the powdery active carbon and the wood pulp fiber are respectively dispersed by water and then are uniformly mixed and stirred in a pulp tank;
adding a polyurethane adhesive into the uniformly stirred slurry;
feeding the mixed pulp to a paper machine, forming on the paper machine after pulp flushing, and drying in a drying oven at 60-150 ℃ (pre-drying);
drying (post-drying) at 80-160 ℃, and coiling the dried material to obtain the hydrocarbon adsorption layer.
EXAMPLE 2 preparation of a Hydrocarbon adsorbing Material
The present example differs from example 1 in that example 1 uses powdered activated carbon, and in this example, it uses granular activated carbon, and the rest are the same. Specifically, the hydrocarbon adsorption material comprises a hydrocarbon adsorption layer, and comprises the following components by mass:
70 parts of granular activated carbon (420 g/m)2The average particle diameter of the granular activated carbon is 200 μm; 15 parts of wood pulp fiber, 90g/m2(ii) a 15 parts of polyurethane adhesive, 90g/m2；
The preparation method of the hydrocarbon adsorption layer comprises the following steps:
respectively dispersing granular activated carbon and wood pulp fibers by using water, and then uniformly mixing and stirring in a pulp pool;
adding a polyurethane adhesive into the uniformly stirred slurry;
feeding the mixed pulp to a paper machine, forming on the paper machine after pulp flushing, and drying in a drying oven at 60-150 ℃ (pre-drying);
drying (post-drying) at 80-160 ℃, and coiling the dried material to obtain the hydrocarbon adsorption layer.
EXAMPLE 3 preparation of a Hydrocarbon adsorbing Material
In this example, the difference from example 1 is that the total parts used in example 1 are 100 parts, the total parts used in this example are 33 parts, and the rest are the same. Specifically, the hydrocarbon adsorption material comprises a hydrocarbon adsorption layer, and comprises the following components by mass:
23 parts of powdered activated carbon (138 g/m)2The average particle diameter of the powdery active carbon is 10 μm; 5 parts of wood pulp fiber, 30g/m2(ii) a 5 parts of polyurethane adhesive, 30g/m2；
The preparation method of the hydrocarbon adsorption layer comprises the following steps:
respectively dispersing granular activated carbon and wood pulp fibers by using water, and then uniformly mixing and stirring in a pulp pool;
adding a polyurethane adhesive into the uniformly stirred slurry;
feeding the mixed pulp to a paper machine, forming on the paper machine after pulp flushing, and drying in a drying oven at 60-150 ℃ (pre-drying);
drying (post-drying) at 80-160 ℃, and coiling the dried material to obtain the hydrocarbon adsorption layer.
Example 4
Preparation method of hydrocarbon adsorbing material
In this example, the difference from example 1 is that the total parts used in example 1 are 100 parts, the total parts used in this example are 133 parts, and the rest are the same. Specifically, the hydrocarbon adsorption material comprises a hydrocarbon adsorption layer, and comprises the following components by mass:
93 parts of powdered activated carbon (558 g/m)2The average particle diameter of the powdery active carbon is 10 μm; 20 parts of wood pulp fiber, 120g/m2(ii) a 20 parts of polyurethane adhesive, 120g/m2；
The preparation method of the hydrocarbon adsorption layer comprises the following steps:
respectively dispersing granular activated carbon and wood pulp fibers by using water, and then uniformly mixing and stirring in a pulp pool;
adding a polyurethane adhesive into the uniformly stirred slurry;
feeding the mixed pulp to a paper machine, forming on the paper machine after pulp flushing, and drying in a drying oven at 60-150 ℃ (pre-drying);
drying (post-drying) at 80-160 ℃, and coiling the dried material to obtain the hydrocarbon adsorption layer.
EXAMPLE 5A method for producing a Hydrocarbon adsorbing Material
In this example, the difference from example 1 is that wood pulp fibers are used in example 1, polypropylene (PP) fibers are used in this example, and the rest is the same. Specifically, the hydrocarbon adsorption material comprises a hydrocarbon adsorption layer, and comprises the following components by mass:
70 portions of powdered activated carbon, 420g/m2The average particle size of the powdered activated carbon is 10 μm; 15 Parts of Polypropylene (PP) fiber, 90g/m2(ii) a 15 parts of polyurethane adhesive, 90g/m2；
The preparation method of the hydrocarbon adsorption layer comprises the following steps:
respectively dispersing powdered activated carbon and polypropylene (PP) fibers with water, and then uniformly mixing and stirring in a slurry tank;
adding a polyurethane adhesive into the uniformly stirred slurry;
feeding the mixed pulp to a paper machine, forming on the paper machine after pulp flushing, and drying in a drying oven at 60-150 ℃ (pre-drying);
drying (post-drying) at 80-160 ℃, and coiling the dried material to obtain the hydrocarbon adsorption layer.
EXAMPLE 6 preparation of a Hydrocarbon adsorbing Material
In this embodiment, the difference from embodiment 1 is that the polyurethane adhesive is used in embodiment 1, the epoxy adhesive is used in this embodiment, and the rest are the same. Specifically, the hydrocarbon adsorption material comprises a hydrocarbon adsorption layer, and comprises the following components by mass:
70 portions of powdered activated carbon, 420g/m2The average particle size of the powdered activated carbon is 10 μm; 15 parts of wood pulp fiber, 90g/m2(ii) a Epoxy resin adhesive15 parts by weight, 90g/m2；
The preparation method of the hydrocarbon adsorption layer comprises the following steps:
the powdery active carbon and the wood pulp fiber are respectively dispersed by water and then are uniformly mixed and stirred in a pulp tank;
adding an epoxy resin adhesive into the uniformly stirred slurry;
feeding the mixed pulp to a paper machine, forming on the paper machine after pulp flushing, and drying in a drying oven at 60-150 ℃ (pre-drying);
drying (post-drying) at 80-160 ℃, and coiling the dried material to obtain the hydrocarbon adsorption layer.
EXAMPLE 7 preparation of a Hydrocarbon adsorbing Material
In this example, the difference from example 1 is that in the preparation method of the hydrocarbon adsorbing layer, in example 1, the polyurethane adhesive is mixed with the powdered activated carbon and the wood pulp fiber in the pulp bath and directly made into paper, and in this example, the polyurethane adhesive is applied to the dried material by a roller or a spraying method, and the rest is the same. Specifically, the hydrocarbon adsorption material comprises a hydrocarbon adsorption layer, and comprises the following components by mass:
70 portions of powdered activated carbon, 420g/m2The average particle size of the powdered activated carbon is 10 μm; 15 parts of wood pulp fiber, 90g/m2(ii) a 15 parts of polyurethane adhesive, 90g/m2；；
The preparation method of the hydrocarbon adsorption layer comprises the following steps:
the powdery active carbon and the wood pulp fiber are respectively dispersed by water and then are uniformly mixed and stirred in a pulp tank;
feeding the mixed pulp to a paper machine, forming on the paper machine after pulp flushing, and drying in a drying oven at 60-150 ℃ (pre-drying);
applying a polyurethane adhesive on the dried material through a roller or a spraying mode;
drying (post-drying) at 80-160 ℃, and coiling the dried material to obtain the hydrocarbon adsorption layer.
EXAMPLE 8 preparation of a Hydrocarbon adsorbing Material
In this example, the difference from example 1 was that the amounts of powdered activated carbon, wood pulp fiber and polyurethane binder were different, and the rest were the same. Specifically, the hydrocarbon adsorption material comprises a hydrocarbon adsorption layer, and comprises the following components by mass:
85 parts of powdered activated carbon, 510g/m2The average particle size of the powdered activated carbon is 10 μm; 8 parts of wood pulp fiber, 48g/m2(ii) a 7 parts of polyurethane adhesive, 42g/m2；
The preparation method of the hydrocarbon adsorption layer comprises the following steps:
the powdery active carbon and the wood pulp fiber are respectively dispersed by water and then are uniformly mixed and stirred in a pulp tank;
adding a polyurethane adhesive into the uniformly stirred slurry;
feeding the mixed pulp to a paper machine, forming on the paper machine after pulp flushing, and drying in a drying oven at 60-150 ℃ (pre-drying);
drying (post-drying) at 80-160 ℃, and coiling the dried material to obtain the hydrocarbon adsorption layer.
EXAMPLE 9 preparation of a Hydrocarbon adsorbing Material
In this example, the difference from example 1 was that the amounts of powdered activated carbon, wood pulp fiber and polyurethane binder were different, and the rest were the same. Specifically, the hydrocarbon adsorption material comprises a hydrocarbon adsorption layer, and comprises the following components by mass:
40 parts of powdered activated carbon, 240g/m2The average particle size of the powdered activated carbon is 10 μm; 40 parts of wood pulp fiber, 240g/m2(ii) a 20 parts of polyurethane adhesive, 120g/m2；
The preparation method of the hydrocarbon adsorption layer comprises the following steps:
the powdery active carbon and the wood pulp fiber are respectively dispersed by water and then are uniformly mixed and stirred in a pulp tank;
adding a polyurethane adhesive into the uniformly stirred slurry;
feeding the mixed pulp to a paper machine, forming on the paper machine after pulp flushing, and drying in a drying oven at 60-150 ℃ (pre-drying);
drying (post-drying) at 80-160 ℃, and coiling the dried material to obtain the hydrocarbon adsorption layer.
EXAMPLE 10 preparation of a Hydrocarbon adsorbing Material
In this example, the difference from example 1 is that each component is different and the rest is the same. Specifically, the hydrocarbon adsorption material comprises a hydrocarbon adsorption layer, and comprises the following components by mass:
70 parts of activated carbon fiber, 420g/m2The specific surface area is 1500m2(iv)/g, purchased; polyphenylene Benzoxazole (PBO) fiber 20 parts, 120g/m2(ii) a 10 parts of acrylate adhesive, 60g/m2；
The preparation method of the hydrocarbon adsorption layer comprises the following steps:
respectively dispersing activated carbon fibers and Polyphenylene Benzoxazole (PBO) fibers by using water, and then uniformly mixing and stirring in a slurry pool;
sending the mixed slurry flow to a paper machine, carrying out pulp flushing, forming on the paper machine, and drying in a drying box at 108 ℃ (pre-drying);
applying an acrylate adhesive on the dried material in a roller or spraying manner;
drying (post-drying) at 138 ℃, and coiling the dried material to obtain the hydrocarbon adsorption layer.
EXAMPLE 11 preparation of a Hydrocarbon adsorbing Material
In the present embodiment, the difference from embodiment 1 is that a composite welding layer is further included, and the rest is the same. Specifically, the hydrocarbon adsorption material comprises a hydrocarbon adsorption layer and a composite welding layer, wherein the hydrocarbon adsorption layer comprises the following components in mass:
70 portions of powdered activated carbon, 420g/m2The average particle size of the powdered activated carbon is 10 μm; 15 parts of wood pulp fiber, 90g/m2(ii) a 15 parts of polyurethane adhesive, 90g/m2；
The composite welding layer comprises the following components in parts by mass:
3 Parts of Polypropylene (PP) film, 18g/m2(ii) a 3 parts of epoxy resin, 18g/m2；
The preparation method of the hydrocarbon adsorption layer comprises the following steps:
the powdery active carbon and the wood pulp fiber are respectively dispersed by water and then are uniformly mixed and stirred in a pulp tank;
adding a polyurethane adhesive into the uniformly stirred slurry;
feeding the mixed pulp to a paper machine, forming on the paper machine after pulp flushing, and drying in a drying oven at 60-150 ℃ (pre-drying);
drying (post-drying) at 80-160 ℃, and coiling the dried material to obtain a hydrocarbon adsorption layer;
and bonding the polypropylene (PP) films together by the hydrocarbon adsorption layer through epoxy resin, and cutting into a proper size.
Example 12
In this example, the difference from example 1 was that the amounts of the respective components in the hydrocarbon-adsorbing layer were different, and the rest was the same. Specifically, the hydrocarbon adsorption material comprises a hydrocarbon adsorption layer, and comprises the following components by mass:
50 parts of powdered activated carbon, 300g/m2The average particle size of the powdered activated carbon is 10 μm; 25 parts of wood pulp fiber, 150g/m2(ii) a 25 parts of polyurethane adhesive, 150g/m2；
The preparation method of the hydrocarbon adsorption layer comprises the following steps:
the powdery active carbon and the wood pulp fiber are respectively dispersed by water and then are uniformly mixed and stirred in a pulp tank;
adding a polyurethane adhesive into the uniformly stirred slurry;
feeding the mixed pulp to a paper machine, forming on the paper machine after pulp flushing, and drying in a drying oven at 60-150 ℃ (pre-drying);
drying (post-drying) at 80-160 ℃, and coiling the dried material to obtain the hydrocarbon adsorption layer.
Example 13
In this example, the difference from example 1 was that the amounts of the respective components in the hydrocarbon-adsorbing layer were different, and the rest was the same. Specifically, the hydrocarbon adsorption material comprises a hydrocarbon adsorption layer, and comprises the following components by mass:
70 portions of powdered activated carbon, 420g/m2The average particle size of the powdered activated carbon is 10 μm; 25 g of wood pulp fiber and 150g/m2(ii) a 5 parts of polyurethane adhesive, 30g/m2；
The preparation method of the hydrocarbon adsorption layer comprises the following steps:
the powdery active carbon and the wood pulp fiber are respectively dispersed by water and then are uniformly mixed and stirred in a pulp tank;
adding a polyurethane adhesive into the uniformly stirred slurry;
feeding the mixed pulp to a paper machine, forming on the paper machine after pulp flushing, and drying in a drying oven at 60-150 ℃ (pre-drying);
drying (post-drying) at 80-160 ℃, and coiling the dried material to obtain the hydrocarbon adsorption layer.
Comparative example 1
The commercial sample shell manufactured by a foreign company is adopted, and the activated carbon coating is sprayed on the inner side of the filter shell to replace the hydrocarbon adsorption layer in the application and be used on the shell. .
Comparative example 2
Adopt non-woven fabrics and active carbon combination mode among the prior art, two-layer is the non-woven fabrics layer, and the centre is active carbon layer, replaces the hydrocarbon adsorbed layer in this application to be used in the casing.
Test example 1
The hydrocarbon adsorbing materials prepared in examples 1 to 12 were compared with the hydrocarbon adsorbing materials and the existing products of comparative examples 1 to 3 in terms of the quantification of the hydrocarbon, the burst length, the adsorption efficiency and the adsorption amount, and the results are shown in Table 1.
The quantitative determination is carried out according to GB/T451.2-2002, the bursting strength is measured according to GB/T454-2002, the adsorption quantity refers to ASTM D5228, 54mg of butane is penetrated as the termination condition, and the concrete steps are as follows: the HC adsorber is installed in a complete air filter with a filter element, 100cm2Plate, at a rate of 10g/hr, 50% butane penetrated up to 54mg and was purged with dry air at 22.7lpm for 2 hours for a total of thirteen cycles with BWC (adsorbed mass) being the average of the last three cycles. The adsorption efficiency is the amount of butane adsorbed/amount of butane permeated x 100%.
TABLE 1
Figure BDA0002527243240000171
As can be seen from Table 1, the comparison of examples 1-4 shows that the powder adsorption effect is better than the granular adsorption effect when the material production process allows, and the adsorption effect is better with the increase of the total gram weight under the same type of activated carbon powder proportion.
As can be seen from the comparison between example 1 and example 5, the burst strength of the hydrocarbon adsorbent using the polypropylene fibers is lower than that of the hydrocarbon adsorbent made of wood pulp fibers, but the influence of the adsorption amount and the adsorption efficiency is not great.
The comparison between example 1 and example 6 shows that the difference of the adhesives at the same addition ratio has a smaller effect on the performance of the hydrocarbon adsorbing material, but in practical application, the difference of the adhesives at different addition ratios still has a certain effect on the performance of the hydrocarbon adsorbing material.
The comparison between the example 1 and the examples 8 to 9 and the examples 12 to 13 shows that the proportion of carbon is increased, the adsorption amount and the adsorption efficiency are increased, but the breakage resistance is obviously reduced along with the continuous increase of the proportion of carbon, but the actual use is not affected, which indicates that the prepared hydrocarbon adsorbing material has better performance within the dosage range of the specification, and compared with the preparation method, the preparation method has the advantages that the adsorption amount and the adsorption efficiency are better, and the breakage resistance is also better.
Comparing example 1 with example 10, it can be seen that the difference of the adsorption media affects the performance of the hydrocarbon adsorbing material, but the overall performance difference is different, and the different performance has better performance.
A comparison of example 1 with example 11 shows that the presence or absence of the composite weld layer does not affect the performance of the hydrocarbon adsorbing material.
As can be seen from the comparison between the example 1 and the comparative examples 1 and 2, the hydrocarbon adsorbing material has better effects in adsorption efficiency and adsorption quantity than the adsorbing materials in the prior art, the quality of the adsorbing medium can be effectively improved, and the adsorption efficiency and the adsorption quantity of the product are greatly improved.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the spirit of the present disclosure, features from the above embodiments or from different embodiments may also be combined, steps may be implemented in any order, and there are many other variations of different aspects of one or more embodiments of the present description as described above, which are not provided in detail for the sake of brevity.
It is intended that the one or more embodiments of the present specification embrace all such alternatives, modifications and variations as fall within the broad scope of the appended claims. Therefore, any omissions, modifications, substitutions, improvements, and the like that may be made without departing from the spirit and principles of one or more embodiments of the present disclosure are intended to be included within the scope of the present disclosure.

Claims (11)

1. The hydrocarbon adsorption material applied to the engine intake assembly and the intake pipeline is characterized by comprising a hydrocarbon adsorption layer, wherein the hydrocarbon adsorption layer comprises the following components in parts by weight:
20-90 parts of an adsorption medium;
5-60 parts of fibers;
5-30 parts of an adhesive.
2. The hydrocarbon adsorbing material as claimed in claim 1, wherein the hydrocarbon adsorbing layer comprises the following components in parts by weight:
60-80 parts of an adsorption medium;
10-20 parts of fibers;
10-20 parts of an adhesive.
3. The hydrocarbon adsorbing material as claimed in claim 1 or 2, wherein the grammage of each component in the hydrocarbon adsorbing layer is in the range of 1-20g/m2(ii) a Preferably, the gram weight range of each component in the hydrocarbon adsorption layer is 3-10 g/m2。
4. The hydrocarbon adsorption material of claim 1 or 2, wherein the adsorption medium is selected from one or more of activated carbon, activated carbon fiber, silica gel, alumina, and carbon molecular sieve;
and/or the fiber is selected from one or more of wood pulp fiber, polyester fiber, polypropylene fiber, tencel, aramid fiber, polyamide fiber, polyphenylene benzoxazole fiber, glass fiber, polyvinyl alcohol fiber or viscose fiber;
and/or the adhesive is selected from one or more of a sodium silicate adhesive, a copper oxide-phosphoric acid adhesive, an epoxy resin adhesive, a trialdehyde adhesive, a polyurethane adhesive, an acrylate adhesive, a modified phenolic adhesive or a polyvinyl acetate adhesive;
preferably, the adsorption medium is granular or powdery activated carbon selected from any one or more of activated carbon with a particle size ranging from 0.1 μm to 2000 μm.
5. The hydrocarbon adsorbing material of claim 1 or 2, wherein the fibers and the adsorbing media are interwoven into a network in the hydrocarbon adsorbing layer, and the fibers are uniformly distributed in each layer to provide strength.
6. The hydrocarbon adsorbing material as claimed in claim 1 or 2, further comprising a composite welding layer, wherein the composite welding layer comprises the following components in parts by weight:
1-20 parts of welding layer material;
1-10 parts of compound glue.
7. The hydrocarbon adsorption material of claim 6, wherein the welding layer is made of one or more of polypropylene film, nylon film, polyethylene film and non-woven fabric;
and/or the composite adhesive is selected from one or more of epoxy resin, phenolic resin, polyurethane resin, ethylene-vinyl acetate resin or aminoplast;
preferably, the hydrocarbon adsorption layer is bonded with the welding layer material through the composite glue.
8. A method for producing a hydrocarbon adsorbing material as defined in any one of claims 1 to 5, wherein said hydrocarbon adsorbing layer is produced by a method comprising the steps of:
the fibers and the adsorption medium are respectively dispersed and then mixed in a pulp tank;
feeding the mixed slurry to a paper machine, carrying out pulp flushing, forming on the paper machine, and drying; wherein the adhesive is mixed with the adsorption medium and the fibers to be directly made into paper, or the adhesive is applied to a dry material;
and (5) drying, namely coiling the dried material and then coiling.
9. A method of making a hydrocarbon adsorbing material as defined in claim 8, further comprising the steps of;
and bonding the hydrocarbon adsorption layer and the welding layer material together through composite glue, and then slitting.
10. Use of a hydrocarbon adsorbing material according to any of claims 1-5 for adsorbing hydrocarbons in engine intake assemblies and air intake lines.
11. The application of the hydrocarbon adsorbing material as claimed in claim 10, wherein the hydrocarbon adsorbing layer is fixed in an engine intake assembly and an intake pipeline, and the specific working process is as follows:
when the engine stops working: the fuel steam hydrocarbon leaked from the engine overflows to the air inlet assembly and the air inlet pipeline and is absorbed by the hydrocarbon adsorption layer;
when the engine is started, air enters from the air inlet, and simultaneously, hydrocarbon absorbed by the hydrocarbon adsorption layer is desorbed and then flows into the engine to be combusted;
preferably, the hydrocarbon adsorption layer is fixed in the engine air inlet assembly and the air inlet pipeline through a composite welding layer.
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