CN-116712918-B - High-stability hydrobromic acid and blending device thereof

Abstract

The invention provides high-stability hydrobromic acid and a preparation device thereof, wherein the high-stability hydrobromic acid comprises (I) homogeneous liquid formed by mixing hydrogen bromide gas and a preparation agent, wherein the hydrogen bromide gas comprises the preparation agent=10-35:65-90, or (II) homogeneous liquid formed by hydrogen bromide aqueous solution or hydrogen bromide gas, the preparation agent and water, the mass percentage of the hydrogen bromide aqueous solution or the hydrogen bromide gas, the preparation agent and the water is 20-47:0.5-65:1.0-79.5, and the preparation agent is at least one of oxalic acid, ascorbic acid, hydrazine hydrate, acetaldehyde, formaldehyde, formic acid and glacial acetic acid. The allocation device realizes allocation in a closed system, effectively avoids emission of harmful substances and environmental pollution, has the advantages of reasonable design, strong practicability and easy operation, can obtain hydrobromic acid products with high quality consistency, and has high stability.

Inventors

• CAO SHANWEN
• LI CHAOHUI
• CAO XIAOQING
• LU CHEN

Assignees

• 浙江上虞利星化工有限公司

Dates

Publication Date

20260505

Application Date

20230704

Claims (6)

1. 1. A high stability hydrobromic acid, comprising: (I) The homogeneous phase liquid is formed by mixing hydrogen bromide gas and a blending agent, wherein the mass percentage of the hydrogen bromide gas to the blending agent is 10-35:65-90; Or (b) (II) homogeneous phase liquid composed of hydrogen bromide aqueous solution or hydrogen bromide gas, a blending agent and water, wherein the mass percentage of the hydrogen bromide aqueous solution or the hydrogen bromide gas, the blending agent and the water is 20-47:0.5-65:1.0-79.5; The preparation agent is at least one of oxalic acid, ascorbic acid, hydrazine hydrate, acetaldehyde, formaldehyde, formic acid and glacial acetic acid; uniformly mixing hydrogen bromide gas and a blending agent by a blending device or uniformly mixing a hydrogen bromide aqueous solution or hydrogen bromide gas, a blending agent and water to obtain high-stability hydrobromic acid; The hydrogen bromide gas is hydrogen bromide high-purity gas or a mixture of hydrogen bromide and hydrogen, wherein the hydrogen bromide content is 80-99.8%; the allocation device for the hydrobromic acid with high stability comprises a container, a pump, a buffer tank and an exhaust gas absorber; The bottom of the container is provided with a weighing module, a discharge hole and an air inlet, and the top of the container is provided with a feed inlet and a gas inlet; The inlet of the pump is divided into two paths, one path is connected with the discharge port, and the other path is connected with the liquid storage tank; The air inlet is connected with a breather valve, the breather valve is connected with an inert gas pipe and an emptying pipe, the emptying pipe is connected with an exhaust gas absorber, and the exhaust gas absorber is connected with a buffer tank; And the inert gas pipe is provided with a self-operated regulating valve.
2. 2. The high stability hydrobromic acid according to claim 1, wherein the bottom of the container is provided with legs on which the weighing module is mounted.
3. 3. The high stability hydrobromic acid according to claim 1, wherein a balance port is further provided at the top of the vessel, the balance port is connected to a balance pipe connected to the buffer tank, and a level gauge is provided at the side of the vessel.
4. 4. The high stability hydrobromic acid according to claim 1, wherein a sampling tube is provided on the connection between the outlet and the pump, and a valve a is provided on the sampling tube.
5. 5. The hydrobromic acid of claim 1 wherein valve B is disposed in the connection between the pump and the liquid storage tank, valve C is disposed in the connection between the pump and the discharge port, valve B and valve C are disposed in parallel, valve D is disposed in the connection between the pump and the transport tank, and valve E is disposed in parallel.
6. 6. The high stability hydrobromic acid according to claim 1, wherein said off-gas absorber is provided with an absorption liquid inlet and an exhaust port.

Description

High-stability hydrobromic acid and blending device thereof Technical Field The invention relates to the technical field of hydrobromic acid preparation, in particular to high-stability hydrobromic acid and a blending device thereof. Background Hydrogen bromide is a gas with pungent odor, and is easily dissolved in water, and its aqueous solution is hydrobromic acid. Hydrobromic acid is a widely used raw material, and can be used as a product such as a synthetic sedative in medicine, a solvent, a catalyst and the like of metal minerals in industry, an alkylation catalyst in petroleum industry and the like. During the manufacture, transportation and use of hydrobromic acid, bromide ions are easily oxidized into bromine simple substances, so that the color of hydrobromic acid solution turns yellow, the corrosiveness of hydrobromic acid is increased due to the existence of free bromine simple substances in the solution, the safety of transportation equipment is affected, and in addition, when free bromine in hydrobromic acid is increased, the activity and selectivity of a catalyst are reduced due to the fact that the free bromine is used as a catalyst. The reason for the instability of hydrobromic acid mainly comprises the instability of the prepared hydrobromic acid and the oxidation of the hydrobromic acid caused by equipment factors in the preparation process, so that the preparation method and the preparation equipment of the hydrobromic acid with stable performance are provided, and have great significance on the stability of the hydrobromic acid. Disclosure of Invention Aiming at the defects of the prior art, the invention provides high-stability hydrobromic acid and a preparation device thereof, wherein the hydrobromic acid consists of hydrogen bromide gas and a preparation agent, or consists of hydrogen bromide aqueous solution or hydrogen bromide gas, a preparation agent and water, the preparation device realizes the preparation in a closed system, and effectively avoids the emission of harmful substances and the pollution to the environment, the preparation device has the advantages of reasonable design, strong practicability and easy operation, hydrobromic acid products with high quality consistency can be obtained by using the preparation device, and the obtained hydrobromic acid has high stability. The technical scheme of the invention is as follows: a high stability hydrobromic acid comprising: (I) The homogeneous phase liquid is formed by mixing hydrogen bromide gas and a blending agent, wherein the hydrogen bromide gas comprises the blending agent=10-35:65-90; Or (b) (II) homogeneous phase liquid composed of hydrogen bromide aqueous solution or hydrogen bromide gas, a blending agent and water, wherein the mass percentage of the hydrogen bromide aqueous solution or the hydrogen bromide gas, the blending agent and the water is 20-47:0.5-65:1.0-79.5; The preparation agent is at least one of oxalic acid, ascorbic acid, hydrazine hydrate, acetaldehyde, formaldehyde, formic acid and glacial acetic acid; the high-stability hydrobromic acid is obtained by uniformly mixing the hydrogen bromide gas and the blending agent through the blending device or uniformly mixing the hydrogen bromide aqueous solution or the hydrogen bromide gas, the blending agent and the water. Preferably, in the hydrogen bromide solution, the hydrogen bromide content is 48-60%, and the hydrogen bromide gas is hydrogen bromide high-purity gas or a mixture of hydrogen bromide and hydrogen, wherein the hydrogen bromide content is 80-99.8%. The high-stability hydrobromic acid preparing device comprises a container, a pump, a buffer tank and an exhaust gas absorber; The bottom of the container is provided with a weighing module, a discharge hole and an air inlet, and the top of the container is provided with a feed inlet and a gas inlet; The inlet of the pump is divided into two paths, one path is connected with the discharge port, and the other path is connected with the liquid storage tank; the gas port is connected with a breather valve, and when the pressure in the container is too high, the breather valve can automatically release pressure; The inert gas pipe is provided with a self-operated regulating valve, and inert gas can be automatically supplemented according to the pressure in the container when the pressure in the container is reduced; The device comprises a weighing module, a closed type mixing process, an inert gas pipe, an emptying pipe, a pump, a mixing device and a transportation tank, wherein the weighing module is used for weighing liquid in the container to achieve the purpose of accurate measurement, the mixing device adopts the closed type mixing process, the pressure in the container can be controlled through the inert gas pipe and the emptying pipe in the mixing process, hydrobromic acid in the air can be prevented from being oxidized in the container as much as possible, the quality of hydrobromic acid in the