阅读说明：本技术 一种采用有芯中频感应炉生产硼酐的方法 (Method for producing boric anhydride by using cored intermediate frequency induction furnace ) 是由 黄占文 于 2020-06-12 设计创作，主要内容包括：一种采用有芯中频感应炉生产硼酐的方法,其步骤如下：应用有芯中频感应炉生产硼酐工作时,设置在有芯中频感应炉内的铁芯或金属柱体芯被加热,成为熔化硼酸的热源；向有芯中频感应炉内装入硼酸,当有芯中频感应炉内温度达摄氏400度时,打开出料口封堵物,当有芯中频感应炉内温度达到摄氏450-1000度时,硼酸受热分解,形成熔化的硼酐和水蒸气,流动的硼酐从出料口流出,料面下降填入硼酸,保持生产设定有芯中频感应炉内料面高度；需要及时人工或机械扎眼和放气。该发明采用有芯中频感应炉生产硼酐,实现用冶金技术设备生产化工产品,生产工艺或设备简单,生产效率高,产品纯度高,大幅增加能量利用率,应用于化工行业技术领域中。(A method for producing boric anhydride by using a cored intermediate frequency induction furnace comprises the following steps: when the cored intermediate frequency induction furnace is applied to producing the boric anhydride, an iron core or a metal cylinder core arranged in the cored intermediate frequency induction furnace is heated to become a heat source for melting the boric acid; filling boric acid into the cored intermediate frequency induction furnace, opening a material outlet plugging object when the temperature in the cored intermediate frequency induction furnace reaches 400 ℃, and when the temperature in the cored intermediate frequency induction furnace reaches 450-; timely manual or mechanical perforation and deflation are required. The method adopts the cored intermediate frequency induction furnace to produce the boric anhydride, realizes the production of chemical products by metallurgical technical equipment, has simple production process or equipment, high production efficiency and high product purity, greatly increases the energy utilization rate, and is applied to the technical field of the chemical industry.)

1. A method for producing boric anhydride by adopting a cored intermediate frequency induction furnace is characterized by comprising the following steps: the method for producing the boric anhydride by adopting the cored intermediate frequency induction furnace comprises the following steps:

(1) when the cored intermediate frequency induction furnace is applied to producing the boric anhydride, an iron core or a metal cylinder core arranged in the cored intermediate frequency induction furnace is heated to become a heat source for melting the boric acid;

(2) charging: boric acid is filled into the cored intermediate frequency induction furnace, the boric acid is put into the cored intermediate frequency induction furnace to the production height, and the cored intermediate frequency induction furnace is powered on for production;

(3) power transmission production: when the temperature in the cored medium-frequency induction furnace reaches 400 ℃, opening a plugging object at a discharge hole, and continuing heating;

(4) when the temperature in the cored medium frequency induction furnace reaches 450-1000 ℃, boric acid is heated and decomposed to form molten boric anhydride and water vapor, the flowing boric anhydride flows out of a discharge port, and is cooled, crushed, packaged and warehoused after being collected, and the water vapor is discharged through a pipeline;

(5) continuously filling boric acid along with the descending of the charge level in the cored intermediate frequency induction furnace, and keeping the charge level height in the cored intermediate frequency induction furnace set in production; in the production process, timely manual or mechanical hole pricking and air releasing are needed;

(6) when the coreless intermediate frequency induction furnace is applied to producing the boric anhydride, the coreless intermediate frequency induction furnace needs to be subjected to cored transformation.

2. The method for producing the boric anhydride by using the medium frequency induction furnace with the core according to claim 1, which is characterized in that: the operating principle of adopting the cored intermediate frequency induction furnace to produce the boric anhydride is that the cored intermediate frequency induction furnace is applied to produce the boric anhydride according to the production reaction principle of the boric anhydride, and a metal heating body capable of generating eddy current is arranged in the cored intermediate frequency induction furnace, so that the boric acid is melted by utilizing the metal heating body, and the boric acid is dehydrated to produce the boric anhydride; the core intermediate frequency induction furnace can utilize the original single-core iron bar or the metal cylinder core capable of generating the eddy current, and the number of the iron cores or the metal cylinder cores capable of generating the eddy current can be increased according to the requirement; the iron core or the metal cylinder core can be fixed or can be lifted; when the cored medium-frequency induction furnace works, under the action of a magnetic field generated by the cored medium-frequency induction furnace, an iron core or a metal cylinder core arranged in the cored medium-frequency induction furnace generates eddy current to be heated, and becomes a heat source for melting boric acid; a discharge hole is arranged at the bottom of the furnace body of the cored intermediate frequency induction furnace or close to the side surface of the furnace body at the bottom, so that the production continuity of the boric anhydride can be realized; the method is characterized in that boric acid is put into the cored intermediate frequency induction furnace to a set height of the charge level, the heat utilization rate of the cored intermediate frequency induction furnace production is improved, the production rate is ensured, when the temperature in the cored intermediate frequency induction furnace reaches 1000 ℃ plus 450 ℃, the boric acid is heated and decomposed, the temperature interval is set, so that the volatilization of boric anhydride can be effectively prevented, and the production quantity and quality of the boric anhydride can be improved; in the production process, timely manual or mechanical holing and air release are needed, because a large amount of water vapor is generated in the production process of producing the boric anhydride, so that the materials are prevented from splashing and even partially exploding people; the method for producing the boric anhydride has the advantages that the energy utilization rate of the boric anhydride can reach 65-75%, the purity of the produced boric anhydride is 99%, the impurities are few, and the purposes of reducing the cost, improving the economic benefit, cleaning the production and protecting the environment are achieved.

Technical Field

The invention relates to a method for producing boric anhydride by adopting a cored intermediate frequency induction furnace in the technical field of metallurgical industry.

Background

At present, a cored intermediate frequency induction furnace is a power supply device which converts power frequency 50HZ alternating current into intermediate frequency (more than 300HZ to 1000HZ), rectifies three-phase power frequency alternating current into direct current, converts the direct current into adjustable intermediate frequency current, supplies intermediate frequency alternating current flowing through a capacitor and an induction coil, generates high-density magnetic lines in the induction coil, cuts metal materials contained in the induction coil, generates large eddy current in the metal materials, and converts electric energy into heat energy. The cored medium frequency induction furnace is widely used for smelting, forging and heating non-ferrous metals, thermal treatment quenching and tempering and the like. High smelting speed, good electricity-saving effect, less burning loss and low energy consumption.

In the prior art, the energy utilization rate of a general radiation tunnel kiln is that when coal gas and oil are used as heat sources, the energy utilization rate of boric anhydride is 30-45%; when natural gas or petroleum liquefied gas is used as a heat source, the energy utilization rate of the boric anhydride is 40-55%; when electric heating is adopted as a heat source, the energy utilization rate of the boric anhydride is 50-65%.

The existing production of boric anhydride mainly adopts chemical methods such as chemical combination reaction, chemical decomposition and the like, the chemical combination method adopts the reaction of boron and oxygen to generate diboron trioxide (boric anhydride), and the chemical combination method is used for producing high-purity boric anhydride, is only suitable for special industries due to extremely high cost and is not suitable for industries using a large amount of boron oxide; most of produced boric anhydride adopts a chemical decomposition method, boric acid is heated and decomposed into diboron trioxide (boric anhydride) and water vapor for preparation, and the preparation method adopts a heating dehydration method and is equipped with the following steps: radiant kilns (tunnel kilns, rotary kilns), heating kettles (tanks), and the like. Boric anhydride produced by adopting oil and coal gas as a heat source of the radiation kiln has high impurity content, low purity, low energy utilization rate and environmental pollution; when natural gas or liquefied petroleum gas and electric heating wire are used for heating, the purity of the boric anhydride is improved, but the energy consumption is high. When the heating kettle (tank) is used for producing the boric anhydride, the production efficiency is low, the dehydration is insufficient, and the energy consumption is higher. Therefore, the research and development of a method for producing the boric anhydride by adopting the cored intermediate frequency induction furnace is a new problem to be urgently solved by the industry at home and abroad.

Disclosure of Invention

The invention aims to provide a method for producing boric anhydride by adopting a cored intermediate frequency induction furnace, which solves the problems of complex equipment, insufficient dehydration, high impurity content, high unit energy consumption, low production efficiency, environmental pollution and the like in the existing production process of the boric anhydride; the invention has the advantages of high smelting speed, high productivity, low energy consumption, energy conservation, environmental protection and no pollution, and solves the defects of the traditional process technology.

The purpose of the invention is realized as follows: the method for producing the boric anhydride by using the cored intermediate frequency induction furnace comprises the following steps:

(1) when the cored intermediate frequency induction furnace is applied to producing the boric anhydride, an iron core or a metal cylinder core arranged in the cored intermediate frequency induction furnace is heated to become a heat source for melting the boric acid;

(2) charging: boric acid is filled into the cored intermediate frequency induction furnace, the boric acid is put into the cored intermediate frequency induction furnace to the production height, and the cored intermediate frequency induction furnace is powered on for production;

(3) power transmission production: when the temperature in the cored medium-frequency induction furnace reaches 400 ℃, opening a plugging object at a discharge hole, and continuing heating;

(4) when the temperature in the cored medium frequency induction furnace reaches 450-1000 ℃, boric acid is heated and decomposed to form molten boric anhydride and water vapor, the flowing boric anhydride flows out of a discharge port, and is cooled, crushed, packaged and warehoused after being collected, and the water vapor is discharged through a pipeline;

(5) continuously filling boric acid along with the descending of the charge level in the cored intermediate frequency induction furnace, and keeping the charge level height in the cored intermediate frequency induction furnace set in production; in the production process, timely manual or mechanical hole pricking and air releasing are needed;

(6) when the coreless intermediate frequency induction furnace is applied to producing the boric anhydride, the coreless intermediate frequency induction furnace needs to be subjected to cored transformation;

the operating principle of adopting the cored intermediate frequency induction furnace to produce the boric anhydride is that the cored intermediate frequency induction furnace is applied to produce the boric anhydride according to the production reaction principle of the boric anhydride, and a metal heating body capable of generating eddy current is arranged in the cored intermediate frequency induction furnace, so that the boric acid is melted by utilizing the metal heating body, and the boric acid is dehydrated to produce the boric anhydride; the core intermediate frequency induction furnace can utilize the original single-core iron bar or the metal cylinder core capable of generating the eddy current, and the number of the iron cores or the metal cylinder cores capable of generating the eddy current can be increased according to the requirement; the iron core or the metal cylinder core can be fixed or can be lifted; when the cored medium-frequency induction furnace works, under the action of a magnetic field generated by the cored medium-frequency induction furnace, an iron core or a metal cylinder core arranged in the cored medium-frequency induction furnace generates eddy current to be heated, and becomes a heat source for melting boric acid; a discharge hole is arranged at the bottom of the furnace body of the cored intermediate frequency induction furnace or close to the side surface of the furnace body at the bottom, so that the production continuity of the boric anhydride can be realized; the method is characterized in that boric acid is put into the cored intermediate frequency induction furnace to a set height of the charge level, the heat utilization rate of the cored intermediate frequency induction furnace production is improved, the production rate is ensured, when the temperature in the cored intermediate frequency induction furnace reaches 1000 ℃ plus 450 ℃, the boric acid is heated and decomposed, the temperature interval is set, so that the volatilization of boric anhydride can be effectively prevented, and the production quantity and quality of the boric anhydride can be improved; in the production process, timely manual or mechanical holing and air release are needed, because a large amount of water vapor is generated in the production process of producing the boric anhydride, so that the materials are prevented from splashing and even partially exploding people; the method for producing the boric anhydride has the advantages that the energy utilization rate of the boric anhydride can reach 65-75%, the purity of the produced boric anhydride is 99%, the impurities are few, and the purposes of reducing the cost, improving the economic benefit, cleaning the production and protecting the environment are achieved.

The key point of the invention lies in its production method and working principle.

Compared with the prior art, the method for producing the boric anhydride by adopting the cored intermediate frequency induction furnace has the advantages of simple production process or equipment, high production efficiency, high product purity, no environmental pollution, greatly increased energy utilization rate, high heating speed, material and cost saving, superior working environment, low labor intensity of workers, low energy consumption, uniform heating, extremely small core-surface temperature difference, high temperature control precision and the like, and can be widely applied to the technical field of the chemical industry.

Drawings

The present invention will be described in detail below with reference to the accompanying drawings and examples.

FIG. 1 is a process flow diagram of the present invention.

Detailed Description

Referring to the attached drawings, the method for producing the boric anhydride by using the cored intermediate frequency induction furnace comprises the following steps:

(1) when the cored intermediate frequency induction furnace is applied to producing the boric anhydride, an iron core or a metal cylinder core arranged in the cored intermediate frequency induction furnace is heated to become a heat source for melting the boric acid;

(2) charging: boric acid is filled into the cored intermediate frequency induction furnace, the boric acid is put into the cored intermediate frequency induction furnace to the production height, and the cored intermediate frequency induction furnace is powered on for production;

(3) power transmission production: when the temperature in the cored medium-frequency induction furnace reaches 400 ℃, opening a plugging object at a discharge hole, and continuing heating;

(4) when the temperature in the cored medium frequency induction furnace reaches 450-1000 ℃, boric acid is heated and decomposed to form molten boric anhydride and water vapor, the flowing boric anhydride flows out of a discharge port, and is cooled, crushed, packaged and warehoused after being collected, and the water vapor is discharged through a pipeline;

(5) continuously filling boric acid along with the descending of the charge level in the cored intermediate frequency induction furnace, and keeping the charge level height in the cored intermediate frequency induction furnace set in production; in the production process, timely manual or mechanical hole pricking and air releasing are needed;

(6) when the coreless intermediate frequency induction furnace is applied to producing the boric anhydride, the coreless intermediate frequency induction furnace needs to be subjected to cored transformation.

The operating principle of adopting the cored intermediate frequency induction furnace to produce the boric anhydride is that the cored intermediate frequency induction furnace is applied to produce the boric anhydride according to the production reaction principle of the boric anhydride, and a metal heating body capable of generating eddy current is arranged in the cored intermediate frequency induction furnace, so that the boric acid is melted by utilizing the metal heating body, and the boric acid is dehydrated to produce the boric anhydride; the core intermediate frequency induction furnace can utilize the original single-core iron bar or the metal cylinder core capable of generating the eddy current, and the number of the iron cores or the metal cylinder cores capable of generating the eddy current can be increased according to the requirement; the iron core or the metal cylinder core can be fixed or can be lifted; when the cored medium-frequency induction furnace works, under the action of a magnetic field generated by the cored medium-frequency induction furnace, an iron core or a metal cylinder core arranged in the cored medium-frequency induction furnace generates eddy current to be heated, and becomes a heat source for melting boric acid; a discharge hole is arranged at the bottom of the furnace body of the cored intermediate frequency induction furnace or close to the side surface of the furnace body at the bottom, so that the production continuity of the boric anhydride can be realized; the method is characterized in that boric acid is put into the cored intermediate frequency induction furnace to a set height of the charge level, the heat utilization rate of the cored intermediate frequency induction furnace production is improved, the production rate is ensured, when the temperature in the cored intermediate frequency induction furnace reaches 1000 ℃ plus 450 ℃, the boric acid is heated and decomposed, the temperature interval is set, so that the volatilization of boric anhydride can be effectively prevented, and the production quantity and quality of the boric anhydride can be improved; in the production process, timely manual or mechanical holing and air release are needed, because a large amount of water vapor is generated in the production process of producing the boric anhydride, so that the materials are prevented from splashing and even partially exploding people; the method for producing the boric anhydride has the advantages that the energy utilization rate of the boric anhydride can reach 65-75%, the purity of the produced boric anhydride is 99%, the impurities are few, and the purposes of reducing the cost, improving the economic benefit, cleaning the production and protecting the environment are achieved.