阅读说明：本技术 一种发动机尾气中VOCs气体处理系统和方法 (System and method for treating VOCs gas in engine tail gas ) 是由 唐万福 赵晓云 王大祥 段志军 邹永安 奚勇 于 2020-04-24 设计创作，主要内容包括：一种发动机尾气中VOCs气体处理系统和方法,发动机尾气中VOCs气体处理系统包括：进口、出口、及位于进口和出口之间的流道；还包括紫外线装置(4)、尾气电场装置(5),紫外线装置(4)、尾气电场装置(5)从进口至出口方向依次沿流道设置。尾气电场装置(5)包括：电场装置入口(51)、电场装置出口(52)、电场阴极(5081)和电场阳极(5082),电场阴极(5081)和电场阳极(5082)用于产生电离除尘电场。(A system and a method for processing VOCs gas in engine tail gas are provided, the system for processing VOCs gas in engine tail gas comprises: an inlet, an outlet, and a flow channel between the inlet and the outlet; the device is characterized by further comprising an ultraviolet device (4) and a tail gas electric field device (5), wherein the ultraviolet device (4) and the tail gas electric field device (5) are sequentially arranged along the flow channel from the inlet to the outlet. The exhaust gas electric field device (5) comprises: electric field device entry (51), electric field device export (52), electric field negative pole (5081) and electric field positive pole (5082) are used for producing the ionization dust removal electric field.)

A system for treating gases of VOCs in engine exhaust, comprising:

an inlet, an outlet, and a flow channel between the inlet and the outlet;

the ultraviolet device and the electric field device are sequentially arranged along the flow channel from the inlet to the outlet;

the electric field device comprises: the device comprises an electric field device inlet, an electric field device outlet, an electric field cathode and an electric field anode, wherein the electric field cathode and the electric field anode are used for generating an ionization dust removal electric field;

the electric field device also comprises an auxiliary electric field unit which is used for generating an auxiliary electric field which is not parallel to the ionization dust removal electric field.

A system for treating gases of VOCs in engine exhaust, comprising:

an inlet, an outlet, and a flow channel between the inlet and the outlet;

the ultraviolet device and the electric field device are sequentially arranged along the flow channel from the inlet to the outlet;

the electric field device comprises: the device comprises an electric field device inlet, an electric field device outlet, an electric field cathode and an electric field anode, wherein the electric field cathode and the electric field anode are used for generating an ionization dust removal electric field;

the electric field device further comprises an auxiliary electric field unit, the ionization dust removal electric field comprises a flow channel, and the auxiliary electric field unit is used for generating an auxiliary electric field which is not perpendicular to the flow channel.

The system of claim 1 or 2, wherein the auxiliary electric field unit comprises a first electrode disposed at or near an inlet of the ionizing dedusting electric field.

The system of claim 3, wherein the first electrode is a cathode.

The system of claim 4, wherein the first electrode is an extension of the field cathode.

The system of claim 5 wherein the first electrode is at an angle α with respect to the electric field anode of 0 ° < α ≦ 125 °, or 45 ° ≦ α ≦ 125 °, or 60 ° ≦ α ≦ 100 °, or α ≦ 90 °.

The system for treatment of gases including VOCs in engine exhaust according to any of claims 1-6, wherein said auxiliary electric field unit comprises a second electrode disposed at or near an outlet of said ionizing dedusting electric field.

The system of claim 7, wherein the second electrode is an anode.

A system for treatment of VOCs in engine exhaust according to claim 7 or 8 wherein said second electrode is an extension of said electric field anode.

The system of claim 9 wherein the second electrode is at an angle α with respect to the electric field cathode, and wherein 0 ° < α ≦ 125 °, or 45 ° ≦ α ≦ 125 °, or 60 ° ≦ α ≦ 100 °, or α ≦ 90 °.

The system for treating VOCs in engine exhaust according to any of claims 1-4, wherein the first electrode is disposed independently of the electric field anode and the electric field cathode of the ionizing dedusting electric field.

The system for treatment of gases in VOCs in engine exhaust of any of claims 1-2, 7 and 8, wherein the second electrode is located independently from the electric field anode and the electric field cathode of the ionizing dedusting electric field.

A system for the treatment of gases including VOCs in engine exhaust according to any one of claims 1 to 12, wherein said uv means comprises at least one uv lamp.

The system for the treatment of gases containing VOCs in engine exhaust according to any one of claims 1-13, further comprising an adsorption device positioned between said uv device and said electric field device.

The system for treatment of gases including VOCs in engine exhaust of claim 14, wherein an adsorbent material is disposed within said adsorbent device.

The system for treatment of gases including VOCs in engine exhaust according to claim 15, wherein said adsorbent material comprises at least one of activated carbon and molecular sieves.

A method for treating VOCs gas in engine tail gas comprises the following steps:

carrying out UV treatment on the tail gas of the engine to obtain a product after the tail gas is treated by UV;

performing electric field dust removal treatment on the product after the tail gas is treated by UV, and removing particulate matters in the product after the UV treatment;

the electric field dust removal treatment also comprises a method for providing an auxiliary electric field, and the method comprises the following steps:

passing the VOCs gas through a flow channel;

an auxiliary electric field is generated in the flow channel, and the auxiliary electric field is not perpendicular to the flow channel.

The method of claim 17, wherein the auxiliary electric field comprises a first electrode disposed at or near an inlet of the ionizing dedusting electric field.

The method of claim 18, wherein the first electrode is a cathode.

The method of claim 18 or 19, wherein the first electrode is an extension of the electric field cathode.

The method of claim 20 wherein the first electrode is at an angle α with respect to the electric field anode, and wherein 0 ° < α ≦ 125 °, or 45 ° ≦ α ≦ 125 °, or 60 ° ≦ α ≦ 100 °, or α ≦ 90 °.

A method for treatment of gases including VOCs in engine exhaust according to any of claims 17 to 21, wherein said auxiliary electric field comprises a second electrode, said second electrode being positioned at or near the outlet of said electric field for ionising dust removal.

The method of claim 22, wherein the second electrode is an anode.

A method for treatment of gases including VOCs in engine exhaust according to claim 22 or 23, wherein said second electrode is an extension of said electric field anode.

The method of claim 24 wherein the second electrode is at an angle α with respect to the electric field cathode, and wherein 0 ° < α ≦ 125 °, or 45 ° ≦ α ≦ 125 °, or 60 ° ≦ α ≦ 100 °, or α ≦ 90 °.

The method of claims 17-19 wherein the first electrode is disposed independently of the electric field anode and the electric field cathode.

The method of claim 17, 22 and 23, wherein the second electrode is disposed independently of the electric field anode and the electric field cathode.

The method for treating the gases containing the VOCs in the engine exhaust of any one of claims 17 to 27, wherein the method for treating the gases containing the VOCs in the engine exhaust further comprises performing adsorption treatment on the products after UV treatment on the exhaust before the E-field dedusting treatment.

The method of claim 28, wherein the adsorbent used in the adsorption treatment is activated carbon and/or molecular sieve.

The method according to any one of claims 17 to 29, wherein the UV treated exhaust product contains nanoparticles, and the removing of the nanoparticles comprises removing the nanoparticles.

A method according to any one of claims 17 to 30, wherein the UV treated exhaust product contains particles smaller than 50nm, and the removing of particles from the UV treated exhaust product comprises removing particles smaller than 50nm from the UV treated exhaust product.

The method according to any one of claims 17 to 31, wherein the UV treated exhaust product contains 15 to 35 nm particles, and the removing the particles from the UV treated exhaust product comprises removing 15 to 35 nm particles from the UV treated exhaust product.

A method according to any one of claims 17 to 32, wherein the UV treated exhaust product contains 23nm particulates, and wherein removing particulates from the UV treated exhaust product comprises removing 23nm particulates from the UV treated exhaust product.

The method for treating VOCs in engine exhaust according to any of claims 17-33, wherein the removal rate of 23nm particulate matter in the product after UV treatment of exhaust is greater than or equal to 93%.

The method for treating the gases containing the VOCs in the engine exhaust of any one of claims 17 to 34, wherein the removal rate of 23nm of particulate matters in the product after the UV treatment of the exhaust gas is greater than or equal to 95%.

The method for treating VOCs in engine exhaust according to any of claims 17-35, wherein the removal rate of 23nm particulate matter in the product after UV treatment of exhaust is greater than or equal to 99.99%.