阅读说明：本技术 一种利用固废碳基双金属材料去除焦油的方法 (Method for removing tar by using solid waste carbon-based bimetallic material ) 是由 袁浩然 王舒笑 单锐 顾菁 张军 于 2020-04-29 设计创作，主要内容包括：本发明公开了一种利用固废碳基双金属材料去除焦油的方法,本发明的固废碳基双金属材料以固体热解碳为材料载体,利用湿式浸渍法将两种金属物质均匀的负载在载体的表面,通过协同作用,使固废碳基双金属材料在热解时去除焦油方面的能力明显提升,焦油去除效率可达到83％；同时所使用的固废原材料种类多源,应用范围广泛。(The invention discloses a method for removing tar by using a solid waste carbon-based bimetallic material, the solid waste carbon-based bimetallic material takes solid pyrolytic carbon as a material carrier, two metal substances are uniformly loaded on the surface of the carrier by using a wet impregnation method, the capability of the solid waste carbon-based bimetallic material in removing tar during pyrolysis is obviously improved through synergistic action, and the tar removal efficiency can reach 83%; meanwhile, the used solid waste raw materials have multiple sources and wide application range.)

1. A method for removing tar by using solid waste carbon-based bimetallic materials is characterized by comprising the following steps:

(1) under inert atmosphere, performing pyrolysis treatment on the solid waste at the temperature of 600-; the solid waste comprises domestic garbage solid waste, agricultural and forestry solid waste, industrial solid waste, municipal sludge and livestock and poultry manure;

(2) the method comprises the following steps of carrying out loading of two active metals on solid waste pyrolytic carbon by a wet impregnation method, wherein the active metals are selected from any two of Cu, Ni, Fe and Ca, drying a solution containing the metals and the pyrolytic carbon to obtain a precursor, and carrying out secondary calcination on the precursor at the temperature of 600-900 ℃ for 1-3h in an inert atmosphere to obtain a solid waste carbon-based bimetallic material;

(3) and (3) applying the solid waste carbon-based bimetallic material obtained in the step (2) to the pyrolysis process to remove tar.

2. The method for removing tar by using the solid waste carbon-based bimetallic material as claimed in claim 1, wherein the specific steps of the precursor preparation are as follows: dissolving two kinds of metal salts in water to obtain a mixture solution, weighing the solid waste pyrolytic carbon in the step (1), dissolving the solid waste pyrolytic carbon in the mixture solution, stirring, and drying the stirred solution to obtain a precursor; wherein the mass ratio of the total mass of the two active metals to the solid waste pyrolytic carbon is 0.1: 1-0.3: 1.

3. The method for removing tar by using solid waste carbon-based bimetallic material as in claim 2, wherein the metal salt is selected from chlorides and nitrates of metals.

4. The method for removing tar by using solid waste carbon-based bimetallic materials according to claim 1, wherein the pyrolysis process in the step (3) is a pyrolysis process of combustible solid waste, and raw materials comprise domestic garbage, agricultural and forestry waste, industrial waste, municipal sludge and livestock and poultry manure; the mass ratio of the solid waste to the catalyst material is 0.1: 1-1: 1, and the pyrolysis temperature is 600-.

The technical field is as follows:

the invention relates to the technical field of solid waste treatment, in particular to a method for removing tar by using solid waste carbon-based bimetallic materials.

Background art:

the pyrolysis technology is one of methods for realizing energy source and resource utilization of solid wastes, and the pyrolysis method can convert solid waste energy into various chemical products and gas products, and can relieve the problems of energy shortage, pollutant emission reduction and the like. The pyrolysis process mainly generates three products, namely solid carbon, liquid tar and pyrolysis gas, wherein the product tar is a complex mixture of high-aromaticity hydrocarbons, most of the products are polycyclic and fused ring compounds with or without side chains and heterocyclic compounds containing oxygen, sulfur and nitrogen, the product tar has high viscosity and toxicity, the pipeline can be blocked and corroded in the reaction, and the key technical problem in the pyrolysis method is how to effectively remove the tar and convert the tar into more useful gases.

The invention content is as follows:

the invention aims to provide a method for removing tar by using a solid waste carbon-based bimetallic material, the solid waste carbon-based bimetallic material takes solid pyrolytic carbon as a material carrier, two metal substances are uniformly loaded on the surface of the carrier by using a wet impregnation method, and the tar removal capability of the solid waste carbon-based bimetallic material in the pyrolysis process is obviously improved through the synergistic effect.

The invention is realized by the following technical scheme:

a method for removing tar by using solid waste carbon-based bimetallic materials comprises the following steps:

(1) under inert atmosphere, performing pyrolysis treatment on the solid waste at the temperature of 600-; the solid waste comprises but is not limited to domestic waste solid waste, agriculture and forestry solid waste, industrial solid waste, municipal sludge, livestock and poultry manure and the like;

(2) the method comprises the following steps of carrying out loading of two active metals on solid waste pyrolytic carbon by a wet impregnation method, wherein the active metals are selected from any two of Cu, Ni, Fe and Ca, drying a solution containing the metals and the pyrolytic carbon to obtain a precursor, and carrying out secondary calcination on the precursor at the temperature of 600-900 ℃ for 1-3h in an inert atmosphere to obtain a solid waste carbon-based bimetallic material;

(3) and (3) applying the solid waste carbon-based bimetallic material obtained in the step (2) to the pyrolysis process to remove tar.

The preparation method of the precursor comprises the following specific steps: dissolving two kinds of metal salts in water to obtain a mixture solution, weighing the solid waste pyrolytic carbon in the step (1), dissolving the solid waste pyrolytic carbon in the mixture solution, stirring, and drying the stirred solution to obtain a precursor; wherein the mass ratio of the total mass of the two active metals to the solid waste pyrolytic carbon is 0.1: 1-0.3: 1.

Preferably, the metal salt is selected from the chlorides or nitrates of the metals.

Preferably, the pyrolysis process in step (3) is a pyrolysis process of combustible solid waste, and raw materials include, but are not limited to, domestic garbage, agricultural and forestry waste, industrial waste, municipal sludge, livestock and poultry manure, and the like; the mass ratio of the solid waste to the catalyst material is 0.1: 1-1: 1, and the pyrolysis temperature is 600-.

The invention has the following beneficial effects: the solid waste carbon-based bimetallic material takes solid pyrolytic carbon as a material carrier, two metal substances are uniformly loaded on the surface of the carrier by a wet impregnation method, and the capability of the solid waste carbon-based bimetallic material in removing tar in the pyrolysis process is obviously improved through the synergistic effect, and the tar removal efficiency can reach 83%; meanwhile, the used solid waste raw materials have multiple sources and wide application range.

Description of the drawings:

fig. 1 is an SEM photograph of solid waste carbon-based bimetallic material prepared in example 1.

The specific implementation mode is as follows:

the following is a further description of the invention and is not intended to be limiting.