阅读说明：本技术 一种硫化氢生产系统及其生产方法 (Hydrogen sulfide production system and production method thereof ) 是由 李灿涛 王鹏年 于 2019-09-27 设计创作，主要内容包括：本发明公开了一种硫化氢生产系统及其生产方法,该硫化氢生产系统包括：溶碱罐、反应罐和浓硫酸稀释罐；其中,所述溶碱罐的出料口与反应罐的第一进料口相连通,浓硫酸稀释罐的出料口与反应罐的第二进料口相连通；所述反应罐的底部具有固体出料口,所述固体出料口设置有截止阀。本本发明所得的硫化氢生成系统结构简单,且不会产生废液,所得硫化氢气体含量高；其制备方法简单,易操作实施,生产成本低,适用于企业规模化生产。(The invention discloses a hydrogen sulfide production system and a production method thereof, wherein the hydrogen sulfide production system comprises: an alkali dissolving tank, a reaction tank and a concentrated sulfuric acid diluting tank; the discharge port of the alkali dissolving tank is communicated with a first feed port of the reaction tank, and the discharge port of the concentrated sulfuric acid diluting tank is communicated with a second feed port of the reaction tank; the bottom of retort has the solid discharge gate, the solid discharge gate is provided with the stop valve. The hydrogen sulfide generation system obtained by the invention has a simple structure, does not produce waste liquid, and has high hydrogen sulfide gas content; the preparation method is simple, easy to operate and implement, low in production cost and suitable for large-scale production of enterprises.)

1. a hydrogen sulfide production system, comprising: an alkali dissolving tank (1), a reaction tank (2) and a concentrated sulfuric acid diluting tank (3); the discharge hole of the alkali dissolving tank (1) is communicated with the first feed hole of the reaction tank (2), and the discharge hole of the concentrated sulfuric acid diluting tank (3) is communicated with the second feed hole of the reaction tank (2);

The bottom of the reaction tank (2) is provided with a solid discharge port, and the solid discharge port is provided with a stop valve.

2. The hydrogen sulfide production system according to claim 1, further comprising a temperature control water tank (4), wherein a discharge port of the temperature control water tank (4) is communicated with a feed port of the alkali dissolving tank (1).

3. The hydrogen sulfide production system according to claim 1, further comprising a water pipe (5), wherein the feed inlet of the temperature-controlled water tank (4) and the feed inlet of the concentrated sulfuric acid dilution tank (3) are respectively communicated with the water pipe (5).

4. The hydrogen sulfide production system according to claim 1, further comprising a water ring pump (6) and a water wash tank (7); the top gas outlet of the reaction tank (2) is sequentially communicated with a water ring pump (6) and a rinsing bath (7), the bottom of the rinsing bath (7) is provided with an impurity discharge hole, and the impurity discharge hole is provided with a stop valve.

5. the hydrogen sulfide production system according to claim 4, further comprising a water pipe (5), wherein the feed port of the rinsing bath (7) is communicated with the water pipe (5).

6. The hydrogen sulfide production system according to claim 4, further comprising a gas drier filter (8), wherein a top gas outlet of the rinsing tank (7) is communicated with a feed port of the gas drier filter (8).

7. The hydrogen sulfide production system according to claim 6, further comprising a screw air compressor (9) and a filling machine (11); and a discharge hole of the gas drying filter (8) is sequentially communicated with a spiral air compressor (9) and a filling machine (11).

8. A method for producing hydrogen sulfide, comprising the steps of:

Step 1, introducing a sodium sulfide solution in an alkali dissolving tank into a reaction tank, introducing a dilute sulfuric acid solution in a concentrated sulfuric acid dilution tank into the reaction tank, reacting, and standing to obtain a hydrogen sulfide gas;

And 2, pumping the hydrogen sulfide gas into a washing tank by using a water ring pump, washing with water, and then conveying into a gas drying filter for adsorbing moisture to obtain the purified hydrogen sulfide gas.

9. the method for producing hydrogen sulfide as claimed in claim 8, wherein in step 1, the volume ratio of the sodium sulfide solution to the dilute sulfuric acid solution is (8-12): (3-6);

The mass fraction of the dilute sulfuric acid solution is 55-60%, and the mass volume ratio of sodium sulfide to water in the sodium sulfide solution is (1-5) kg: (8-12) L.

10. the method for producing hydrogen sulfide according to claim 8, wherein the reaction temperature is 60 to 80 ℃ and the reaction time is 2.5 to 3.5 hours.

Technical Field

The invention relates to the field of chemical raw material production equipment, in particular to a hydrogen sulfide production system and a production method thereof.

Background

Hydrogen sulfide is an important chemical raw material, and is mainly used for synthesis of fine organic chemicals and inorganic salts, such as production of pesticides and pharmaceuticals, purification of metals, and production of various industrial reagents.

There are two main sources of hydrogen sulfide: (1) recovering hydrogen sulfide directly from industrial gas, such as hydrogen sulfide gas from petroleum refinery gas, natural gas or coal gas; (2) the hydrogen sulfide gas is synthesized by a synthesis mode, such as direct synthesis of sulfur and hydrogen, and thermal decomposition of grease, petroleum and sulfur to generate the hydrogen sulfide gas.

However, the hydrogen sulfide gas recovered from industrial gas has a low content, poor recovery efficiency, and a high content of impurities in the recovered hydrogen sulfide gas. The hydrogen sulfide generated by thermal decomposition of grease, petroleum and sulfur produces a large amount of waste liquid, which is not economical and environment-friendly. The existing hydrogen sulfide generation equipment has complex structure and high manufacturing cost, and the obtained hydrogen sulfide gas has high impurity content, so that the occurrence of a reverse vulcanization reaction is easy to cause and the quality of the hydrogen sulfide gas is influenced.

Disclosure of Invention

In order to solve the problems, the invention provides a hydrogen sulfide production system and a production method thereof, wherein the hydrogen sulfide generation system has a simple structure, does not produce waste liquid, and has high content of hydrogen sulfide gas; the preparation method is simple, easy to operate and implement, low in production cost and suitable for large-scale production of enterprises.

In order to achieve the above object, the present invention adopts the following technical solutions.

A hydrogen sulfide production system comprising: an alkali dissolving tank, a reaction tank and a concentrated sulfuric acid diluting tank; the discharge port of the alkali dissolving tank is communicated with a first feed port of the reaction tank, and the discharge port of the concentrated sulfuric acid diluting tank is communicated with a second feed port of the reaction tank; the bottom of retort has the solid discharge gate, the solid discharge gate is provided with the stop valve.

Preferably, the alkali dissolving tank further comprises a temperature control water tank, and a discharge hole of the temperature control water tank is communicated with a feed hole of the alkali dissolving tank.

Preferably, the device further comprises a water pipe, and a feed inlet of the temperature control water tank and a feed inlet of the concentrated sulfuric acid dilution tank are respectively communicated with the water pipe.

Preferably, the device also comprises a water ring pump and a rinsing bath; the top gas outlet of the reaction tank is sequentially communicated with a water ring pump and a rinsing bath, the bottom of the rinsing bath is provided with an impurity discharge hole, and the impurity discharge hole is provided with a stop valve.

Preferably, the washing device further comprises a water pipe, and a feed inlet of the washing tank is communicated with the water pipe.

Preferably, the washing device further comprises a gas drying filter, and a top gas outlet of the washing tank is communicated with a feed inlet of the gas drying filter.

preferably, the device also comprises a screw type air compressor and a filling machine; and the discharge hole of the gas drying filter is sequentially communicated with a spiral air compressor and a filling machine.

Preferably, a filter valve is arranged between the spiral air compressor and the filling machine.

(II) a method for producing hydrogen sulfide, comprising the steps of:

Step 1, introducing a sodium sulfide solution in an alkali dissolving tank into a reaction tank, introducing a dilute sulfuric acid solution in a concentrated sulfuric acid dilution tank into the reaction tank, reacting, and standing to obtain a hydrogen sulfide gas;

And 2, pumping the hydrogen sulfide gas into a washing tank by using a water ring pump, washing with water, and then conveying into a gas drying filter for adsorbing moisture to obtain the purified hydrogen sulfide gas.

Preferably, in step 1, the volume ratio of the sodium sulfide solution to the dilute sulfuric acid solution is (8-12): (3-6); the mass fraction of the dilute sulfuric acid solution is 55-60%, and the mass volume ratio of sodium sulfide to water in the sodium sulfide solution is (1-5) kg: (8-12) L.

Preferably, in the step 1, the reaction temperature is 60-80 ℃, and the reaction time is 2.5-3.5 hours.

Drawings

The invention is described in further detail below with reference to the figures and specific embodiments.

Fig. 1 is a schematic configuration diagram of a hydrogen sulfide production system of the present invention.

in the above figures: 1, dissolving alkali in a tank; 2, a reaction tank; 3 concentrated sulfuric acid diluting tank; 4, controlling the temperature of the water tank; 5, a water pipe; 6, a water ring pump; 7, a rinsing bath; 8, drying and filtering the gas; 9 a screw air compressor; 10 a filter valve; 11 filling machine.

Detailed Description

Referring to fig. 1, a hydrogen sulfide production system according to an embodiment of the present disclosure includes: an alkali dissolving tank 1, a reaction tank 2 and a concentrated sulfuric acid diluting tank 3; the discharge port of the alkali dissolving tank 1 is communicated with the first feed port of the reaction tank 2, and the discharge port of the concentrated sulfuric acid dilution tank 3 is communicated with the second feed port of the reaction tank 2; the bottom of retort 2 has the solid discharge gate, the solid discharge gate is provided with the stop valve.

In the above embodiment, the soda tank 1 is used for storing sodium sulfide (Na)₂S) powder, and preparing sodium sulfide powder into sodium sulfide solution by adding water. The concentrated sulfuric acid dilution tank 3 is used for storing concentrated sulfuric acid, and the concentrated sulfuric acid with the mass fraction of 98% is diluted into 50-60% dilute sulfuric acid by means of water dilution. And then adding a sodium sulfide solution into the reaction tank 2 through the first feeding port, adding dilute sulfuric acid into the reaction tank 2 through the second feeding port, and reacting the sodium sulfide solution and the dilute sulfuric acid to obtain sodium sulfate solid and hydrogen sulfide gas, wherein the sodium sulfate solid is discharged from a solid discharge port at the bottom of the reaction tank 2, and the sodium sulfate can be recycled. The hydrogen sulfide gas generation system disclosed by the invention is simple in structure, easy to operate and implement, free of waste liquid and high in hydrogen sulfide gas content.

Referring to fig. 1, according to an embodiment of the present invention, the alkali dissolving tank further includes a temperature-controlled water tank 4, and a discharge port of the temperature-controlled water tank 4 is communicated with a feed port of the alkali dissolving tank 1.

In the above embodiment, water is added into the alkali dissolving tank 1 through the temperature control water tank 4, so that the temperature of the water added into the alkali dissolving tank 1 is controlled at 70 ℃, and the sodium sulfide powder is conveniently dissolved and the sodium sulfide solution is conveniently prepared.

Referring to fig. 1, according to an embodiment of the present invention, a water pipe 5 is further included, and a feed port of the temperature-controlled water tank 4 and a feed port of the concentrated sulfuric acid dilution tank 3 are respectively communicated with the water pipe 5.

In the above embodiment, the feed inlets of the temperature control water tank 4 and the concentrated sulfuric acid dilution tank 3 share the same water pipe 5, so that the system structure is simplified, and water is conveniently supplied to the temperature control water tank 4 and the concentrated sulfuric acid dilution tank 3 through the water pipe 5.

Referring to fig. 1, according to an embodiment of the present invention, a water ring pump 6 and a rinsing bath 7 are further included; the top gas outlet of the reaction tank 2 is sequentially communicated with a water ring pump 6 and a rinsing bath 7, the bottom of the rinsing bath 7 is provided with an impurity discharge hole, and the impurity discharge hole is provided with a stop valve.

In the above embodiment, the hydrogen sulfide gas generated in the reaction tank 2 is pumped into the washing tank 7 by the water ring pump 6 and washed with water, and impurities such as sodium (Na), calcium (Ga), iron (Fe), lead (Pb), and the like in the generated hydrogen sulfide gas are removed, thereby improving the purity of the hydrogen sulfide gas.

Referring to fig. 1, according to an embodiment of the present invention, a water pipe 5 is further included, and a feed port of the rinsing bath 7 is communicated with the water pipe 5.

In the above embodiment, the water pipe 5 is used to provide a water supply pipe 5 for the rinsing bath 7, and the rinsing bath 7, the temperature control water tank 4 and the concentrated sulfuric acid dilution tank 3 share one water pipe 5, so that the system structure is simplified and the operation and implementation are easy.

Referring to fig. 1, according to an embodiment of the present invention, a gas drying filter 8 is further included, and a top gas outlet of the rinsing bath 7 is communicated with a feed inlet of the gas drying filter 8.

In the above embodiment, the gas drying filter 8 can effectively filter water and ash impurities in the hydrogen sulfide gas output from the top of the water washing tank 7, and ensure the hydrogen sulfide gas to be dry and clean.

Referring to fig. 1, according to one embodiment of the present invention, further includes a screw air compressor 9 and a filling machine 11; and a discharge hole of the gas drying filter 8 is sequentially communicated with a spiral air compressor 9 and a filling machine 11.

In the above embodiment, the spiral air compressor 9 is used for compressing the clean hydrogen sulfide gas from the gas drying filter 8 and then sending the compressed clean hydrogen sulfide gas into the filling machine 11 for sealed storage, and the spiral air compressor 9 has the advantages of high stability, high efficiency, small vibration, low noise and the like.

Referring to fig. 1, a filter valve 10 is provided between the screw air compressor 9 and the filling machine 11 according to one embodiment of the present invention.

In the above embodiment, impurities in the compressed gas are further removed by the filter valve 10, and the cleanliness of the hydrogen sulfide gas is improved.