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Process for producing strontium carbonate and barium carbonate without continuous carbonization of hydrogen sulfide gas holder

A technology of hydrogen sulfide and strontium carbonate, applied in the fields of strontium or barium compounds and calcium, which can solve the problems of backward technology, inability to realize continuous production and stability of old technology

Inactive Publication Date: 2017-09-08
CHONGQING KINGLONG FINE STRONTIUM CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, hydrogen sulfide is a flammable and hazardous chemical, which can form an explosive mixture when mixed with air, and can cause combustion and explosion when exposed to open flames and high heat. Therefore, hydrogen sulfide gas stored in a gas cabinet is still very dangerous.
In order to ensure the stability of the follow-up production process using hydrogen sulfide as raw material, it is necessary to install a gas cabinet. The reason is that the current production process is an old process more than ten years ago, and the old process technology is backward and cannot achieve continuous production. Therefore, Both strontium carbonate and barium carbonate are indirect production methods, which cannot guarantee the stability of the hydrogen sulfide gas produced

Method used

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  • Process for producing strontium carbonate and barium carbonate without continuous carbonization of hydrogen sulfide gas holder

Examples

Experimental program
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Effect test

Embodiment 1

[0025] This embodiment is basically as attached figure 1 Shown: a continuous carbonization production system of strontium carbonate and barium carbonate without hydrogen sulfide cabinet, including liquid feed pipe 4, gas feed pipe 5, exhaust pipe 6, discharge pipe and a plurality of carbonization towers arranged in series (this Taking 3 carbonization towers as examples in the embodiment, they are respectively No. 1 carbonization tower 1, No. 2 carbonization tower 2 and No. 3 carbonization tower 3), and the liquid feed pipe 4 is communicated with the upper part of No. 1 carbonization tower 1; Between the carbonization towers, the bottom of the former carbonization tower is communicated with the upper part of the latter carbonization tower through the liquid pipeline 8, and the lower part of the former carbonization tower is communicated with the top of the latter carbonization tower through the gas pipeline 7; one end of the gas feed pipe 5 Be communicated with the bottom of No...

Embodiment 2

[0036] The difference between this embodiment and Embodiment 1 is that: this embodiment is also provided with a controller, a magnetic flap level gauge and a flowmeter electrically connected to the controller respectively, and a magnetic flap is installed in each carbonization tower Liquid level gauge, liquid feed pipe 4, gas feed pipe 5, exhaust pipe 6, discharge pipe, liquid pipe 8 and gas pipe 7 are all provided with flow meters, and the liquid pump 9 is an electronically controlled pump, and the electric The control pump is electrically connected with the controller.

[0037] In the second, third or fifth step, the liquid level in each carbonization tower is detected by a magnetic flap liquid level gauge, and the liquid feed pipe 4, gas feed pipe 5, exhaust pipe 6, The flow rate in the discharge pipe, the liquid pipe 8 and the gas pipe 7, the signal detected by the magnetic flap liquid level meter is transmitted to the controller, and the controller controls the electronic...

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Abstract

The application of the present invention discloses a process for continuously carbonizing strontium carbonate and barium carbonate without hydrogen sulfide gas tank, which includes the following process steps: the first step is to pass the strontium sulfide or barium sulfide liquid through the liquid feed pipe first from the first carbonization tower The upper part is sprayed down; the second step is to adjust the flow rate to maintain a stable liquid level in the first carbonization tower; the third step is to adjust the flow rate to maintain a stable liquid level in the second carbonization tower, and so on; The fourth step is to completely react carbon dioxide with strontium sulfide or barium sulfide solution, and the hydrogen sulfide gas produced is discharged from the exhaust pipe at the top of the first carbonization tower into the subsequent production process; the fifth step is to discharge strontium sulfide or barium strontium sulfide slurry , and then adjust the flow rate to maintain a stable liquid level in the last carbonization tower; the sixth step is to start the car and start continuous production according to the above process. By adopting the process of the invention, the hydrogen sulfide gas tank can be eliminated, and at the same time, the production stability of the follow-up process using hydrogen sulfide as a raw material can be guaranteed.

Description

technical field [0001] The invention belongs to the field of calcium, strontium or barium compounds, in particular to a process for producing strontium carbonate and barium carbonate by continuous carbonization in a hydrogen sulfide-free cabinet. Background technique [0002] Strontium carbonate (nanometre), white powder or granules, odorless and tasteless, mainly used in glass bulbs, magnetic materials, metal smelting and strontium salt preparation. [0003] Barium carbonate is a kind of hexagonal fine crystal or white powder, which is mainly used in electronics, instrumentation and metallurgy industries. Preparation of fireworks, signal flares, ceramic coatings, accessories for optical glass. Also used as rodenticide, water clarifier and filler. [0004] Strontium carbonate can be prepared by carbonization reaction of strontium sulfide solution and carbon dioxide; barium carbonate can be prepared by carbonization reaction of barium sulfide solution and carbon dioxide. I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F11/18C01B17/16
CPCC01F11/187C01B17/165C01F11/188
Inventor 王永范段正富吴成贵罗伦远黄世军
Owner CHONGQING KINGLONG FINE STRONTIUM CHEM
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