阅读说明：本技术 一种交换树脂去除超级电容炭金属离子的方法 (Method for removing carbon metal ions of super capacitor by using exchange resin ) 是由 李广朝 李常利 李铭堂 李修宗 李嘉豪 李常杰 于 2020-12-22 设计创作，主要内容包括：本发明涉及一种交换树脂去除超级电容炭金属离子的方法,包括如下操作步骤：(1)步骤一：将炭浆离心分离；(2)步骤二：对电容炭半成品烘干,冷却备用；(3)步骤三：将烘干后的电容炭半成品加入反应釜,并在反应釜中加入盐酸,在反应釜中进行搅拌处理；(4)步骤四：酸处理结束后,再将强酸型阳离子交换树脂投入反应釜内；(5)步骤五：继续搅拌1～2h,使与电解液充分交换；(6)步骤六：交换后,经反应釜内底部衬聚四氟乙烯滤网；(7)步骤七：对滤液进行抽滤,然后水洗至PH值为6～7。本发明克服现有技术缺点,交换后的树脂HCl可再生,可加速除杂效果,具有节省时间、提高效率、节能再生优点。(The invention relates to a method for removing carbon metal ions of a super capacitor by using exchange resin, which comprises the following operation steps: (1) the method comprises the following steps: centrifugally separating the carbon slurry; (2) step two: drying the semi-finished product of the capacitance carbon, and cooling for later use; (3) step three: adding the dried semi-finished product of the capacitance carbon into a reaction kettle, adding hydrochloric acid into the reaction kettle, and stirring in the reaction kettle; (4) step four: after the acid treatment is finished, putting the strong acid type cation exchange resin into the reaction kettle; (5) step five: continuously stirring for 1-2 h to ensure that the electrolyte is fully exchanged; (6) step six: after exchange, lining a polytetrafluoroethylene filter screen at the bottom in the reaction kettle; (7) step seven: and carrying out suction filtration on the filtrate, and then washing with water until the pH value is 6-7. The invention overcomes the defects of the prior art, and the exchanged resin HCl can be regenerated, thereby accelerating the impurity removal effect and having the advantages of saving time, improving efficiency and saving energy and regeneration.)

1. A method for removing carbon metal ions of a super capacitor by using exchange resin is characterized by comprising the following operation steps:

(1) the method comprises the following steps: performing centrifugal separation on the carbon slurry, and obtaining solid which is a semi-finished product of the super-capacitor carbon after solid-liquid separation;

(2) step two: drying the semi-finished product of the capacitance carbon at 90-100 ℃, and cooling for later use;

(3) step three: adding the dried semi-finished product of the capacitance carbon into a reaction kettle, adding hydrochloric acid into the reaction kettle, stirring in the reaction kettle, and heating for acid treatment;

(4) step four: after the acid treatment is finished, putting the strong acid type cation exchange resin into a reaction kettle, wherein the particle size of the added strong acid type cation exchange resin is 0.3-0.6 cm;

(5) step five: continuously stirring for 1-2 h to ensure that the electrolyte is fully exchanged;

(6) step six: after exchange, lining a polytetrafluoroethylene filter screen at the bottom in the reaction kettle, wherein the aperture of the filter screen is 0.1-0.2 cm;

(7) step seven: and carrying out suction filtration on the filtrate, and then washing with water until the pH value is 6-7.

2. The method for removing the carbon metal ions in the super capacitor by using the exchange resin as claimed in claim 1, wherein the exchange resin comprises the following steps: the mass ratio of the strong acid type cation exchange resin to the capacitor carbon semi-finished product after acid treatment in the fourth step is 1: 1.

3. The method for removing the carbon metal ions in the super capacitor by using the exchange resin as claimed in claim 1, wherein the exchange resin comprises the following steps: and the concentration of the hydrochloric acid added in the third step is 3-10%.

4. The method for removing the carbon metal ions in the super capacitor by using the exchange resin as claimed in claim 1, wherein the exchange resin comprises the following steps: and heating in the third step to room temperature to 105 ℃, and raising the temperature at the speed of 5 ℃/min.

5. The method for removing the carbon metal ions in the super capacitor by using the exchange resin as claimed in claim 1, wherein the exchange resin comprises the following steps: and the electrolyte in the fifth step is one or more aqueous solutions of alkali metal hydroxide, and the concentration of the electrolyte is 2-9 mol/L.

Technical Field

The invention relates to the technical field of capacitance carbon, in particular to a method for removing metal ions in super-capacitance carbon by using exchange resin.

Background

In the production process of the super-capacitor carbon, a large amount of alkali metal hydroxide is required to be used as an activator, so that various alkali metals are generated, and due to the existence of relevant metal ions such as alkali metals or heavy metals, the super-capacitor carbon becomes a cause such as increased leakage current, easy self-discharge, reduced electrostatic capacity retention rate, and deteriorated durability, and sometimes causes faults such as short circuit, and in order to remove the super-capacitor carbon metal ions, a more economical and more environment-friendly method is urgently needed to solve the existing problems.

Disclosure of Invention

The invention aims to solve the technical problem of overcoming the defects of the prior art and provides a method for removing carbon metal ions of a super capacitor by using exchange resin, wherein the exchanged resin HCl can be regenerated, the impurity removal effect can be accelerated, and the method has the advantages of saving time, improving efficiency and saving energy and regeneration.

In order to solve the technical problems, the technical scheme provided by the invention is as follows: a method for removing carbon metal ions of a super capacitor by using exchange resin comprises the following operation steps:

(1) the method comprises the following steps: performing centrifugal separation on the carbon slurry, and obtaining solid which is a semi-finished product of the super-capacitor carbon after solid-liquid separation;

(2) step two: drying the semi-finished product of the capacitance carbon at 90-100 ℃, and cooling for later use;

(3) step three: adding the dried semi-finished product of the capacitance carbon into a reaction kettle, adding hydrochloric acid into the reaction kettle, stirring in the reaction kettle, and heating for acid treatment;

(4) step four: after the acid treatment is finished, putting the strong acid type cation exchange resin into a reaction kettle, wherein the particle size of the added strong acid type cation exchange resin is 0.3-0.6 cm;

(5) step five: continuously stirring for 1-2 h to ensure that the electrolyte is fully exchanged;

(6) step six: after exchange, lining a polytetrafluoroethylene filter screen at the bottom in the reaction kettle, wherein the aperture of the filter screen is 0.1-0.2 cm;

(7) step seven: and carrying out suction filtration on the filtrate, and then washing with water until the pH value is 6-7.

Further, the mass ratio of the strong acid type cation exchange resin to the capacitor carbon semi-finished product after acid treatment in the fourth step is 1: 1.

Further, the concentration of hydrochloric acid added in the third step is 3-10%.

Further, the heating in the third step is from room temperature to 105 ℃, and the temperature is increased at the speed of 5 ℃/min.

Further, the electrolyte in the fifth step is an aqueous solution of one or more alkali metal hydroxides, and the concentration of the aqueous solution is 2-9 mol/L.

The invention has the following advantages: the strong acid type cation exchange resin used in the invention is in hydrogen type, and is directly used; if the acid is a sodium type, the acid can be converted into a hydrogen type under the hydrochloric acid condition, so that the acid can be recycled in the whole process, can be regenerated, can accelerate impurity removal effect, improves efficiency, has the advantages of time saving, efficiency improvement and energy saving regeneration, has the main functions of dissolving and extracting various metal ions and salts generated in the activation process of producing the super capacitor carbon, can convert strong acid type cation exchange resin into reaction raw materials, does not need to add extra equipment in the whole process, reduces production cost, has high efficiency, and is suitable for wide popularization and use.

Detailed Description

The present invention will be described in further detail with reference to examples.

The invention is implemented as follows:

example 1

A method for removing carbon metal ions of a super capacitor by using exchange resin comprises the following operation steps:

(1) the method comprises the following steps: performing centrifugal separation on the carbon slurry, and obtaining solid which is a semi-finished product of the super-capacitor carbon after solid-liquid separation;

(2) step two: drying the semi-finished product of the capacitance carbon at 90 ℃, and cooling for later use;

(3) step three: adding the dried semi-finished product of the capacitance carbon into a reaction kettle, adding hydrochloric acid into the reaction kettle, stirring the mixture in the reaction kettle with the concentration of the hydrochloric acid being 3%, heating the mixture to room temperature to 105 ℃ and raising the temperature at the speed of 5 ℃/min;

(4) step four: after the acid treatment is finished, adding the strong acid type cation exchange resin into the reaction kettle, wherein the mass ratio of the added strong acid type cation exchange resin to the acid-treated semi-finished capacitive carbon product is 1:1, and the particle size of the added strong acid type cation exchange resin is 0.3 cm;

(5) step five: continuously stirring for 1h to ensure that the electrolyte is fully exchanged, wherein the electrolyte is aqueous solution of one or more than two alkali metal hydroxides, and the concentration of the aqueous solution is 2 mol/L;

(6) step six: after exchange, a polytetrafluoroethylene filter screen is lined at the bottom in the reaction kettle, and the aperture of the filter screen is 0.1 cm;

(7) step seven: the filtrate was filtered with suction and then washed with water to pH 6.

Example 2

A method for removing carbon metal ions of a super capacitor by using exchange resin comprises the following operation steps:

(1) the method comprises the following steps: performing centrifugal separation on the carbon slurry, and obtaining solid which is a semi-finished product of the super-capacitor carbon after solid-liquid separation;

(2) step two: drying the semi-finished product of the capacitance carbon at 100 ℃, and cooling for later use;

(3) step three: adding the dried semi-finished product of the capacitance carbon into a reaction kettle, adding hydrochloric acid into the reaction kettle, stirring the mixture in the reaction kettle with the concentration of the hydrochloric acid being 10%, heating the mixture to room temperature to 105 ℃ and raising the temperature at the speed of 5 ℃/min;

(4) step four: after the acid treatment is finished, adding the strong acid type cation exchange resin into the reaction kettle, wherein the mass ratio of the added strong acid type cation exchange resin to the acid-treated semi-finished capacitive carbon product is 1:1, and the particle size of the added strong acid type cation exchange resin is 0.6 cm;

(5) step five: continuously stirring for 2h to ensure that the electrolyte is fully exchanged, wherein the electrolyte is aqueous solution of one or more than two alkali metal hydroxides, and the concentration of the aqueous solution is 9 mol/L;

(6) step six: after exchange, a polytetrafluoroethylene filter screen is lined at the bottom in the reaction kettle, and the aperture of the filter screen is 0.2 cm;

(7) step seven: the filtrate was filtered with suction and washed with water to pH 7.

Example 3

A method for removing carbon metal ions of a super capacitor by using exchange resin comprises the following operation steps:

(1) the method comprises the following steps: performing centrifugal separation on the carbon slurry, and obtaining solid which is a semi-finished product of the super-capacitor carbon after solid-liquid separation;

(2) step two: drying the semi-finished product of the capacitance carbon at 95 ℃, and cooling for later use;

(3) step three: adding the dried semi-finished product of the capacitance carbon into a reaction kettle, adding hydrochloric acid into the reaction kettle, stirring the mixture in the reaction kettle with the concentration of the hydrochloric acid being 7%, heating the mixture to room temperature to 105 ℃ and raising the temperature at the speed of 5 ℃/min;

(4) step four: after the acid treatment is finished, adding the strong acid type cation exchange resin into the reaction kettle, wherein the mass ratio of the added strong acid type cation exchange resin to the acid-treated semi-finished capacitive carbon product is 1:1, and the particle size of the added strong acid type cation exchange resin is 0.5 cm;

(5) step five: continuously stirring for 1.5h to ensure that the electrolyte is fully exchanged, wherein the electrolyte is one or more than two alkali metal hydroxides water solution, and the concentration of the electrolyte is 6 mol/L;

(6) step six: after exchange, a polytetrafluoroethylene filter screen is lined at the bottom in the reaction kettle, and the aperture of the filter screen is 0.15 cm;

(7) step seven: the filtrate was filtered with suction and washed with water to pH 7.

Although the invention has been described in detail hereinabove with respect to a general description and specific embodiments thereof, it will be apparent to those skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.