Liquid-liquid gas generator

Abstract

The present invention discloses a liquid-liquid gas generator, which is characterized by comprising a high-level kettle, a low-level kettle, a U-shaped tube and a dropping funnel; the upper cover of the low-level kettle is provided with a gas outlet pipe with a gas valve; the side wall of the low-level kettle is connected to the dropping funnel through a U-shaped tube; the bottom of the high-level kettle is connected to the kettle bottom connecting pipe, and the other end of the kettle bottom connecting pipe is connected to the bottom of the low-level kettle. The device provided by the present invention realizes the automatic control of the liquid-liquid reaction gas production and gas extraction speed, and also complies with the principle of "on and off, use and stop". It can effectively save drugs, control the occurrence and stop of reactions, and add liquid drugs to the device at any time.

Description

Technical Field

[0001] The invention belongs to the field of chemistry and chemical engineering, and particularly relates to a liquid-liquid gas generator of a liquid-liquid contact gas production device. Background Art

[0002] Kipp's apparatus is a gas generator, also known as Kipp's gas generator or hydrogen generator. It was invented by Dutch scientist Petrus Jacobus Kipp (1808-1864) and named after his last name. It is often used in experiments on the reaction of solid particles and liquids to produce gas. A typical experiment is to use dilute sulfuric acid and zinc particles to produce hydrogen. It can save chemicals, control the occurrence and stop of the reaction, and add liquid chemicals to the device at any time, which conforms to the principle of "on and off, stop and start". However, the Kipp generator cannot be used to produce gas by the reaction of liquid and liquid; the Kipp generator cannot be used when the block solid dissolves quickly in the reaction. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a gas generator which can produce gas by liquid-liquid reaction and can be "turned on and used at any time, turned off and stopped at any time".

[0004] The technical solution provided by the present invention is as follows:

[0005] A liquid-liquid gas generator comprises a high-position kettle (1), a low-position kettle (4), a U-shaped tube (5) and a dropping funnel (8);

[0006] The upper cover of the low-position kettle (4) is provided with a gas outlet pipe with a gas valve (6); the side wall of the low-position kettle (4) is connected to the dropping funnel (8) through a U-shaped tube (5);

[0007] The bottom of the high-position kettle (1) is connected to a kettle bottom connecting pipe (3), and the other end of the kettle bottom connecting pipe (3) is connected to the bottom of the low-position kettle (4).

[0008] Further improvement: The height difference from the bottom of the dropping funnel (8) to the U-shaped tube outlet (51) is smaller than the liquid level difference between the upper and lower kettles, so as to avoid the gas being discharged through the lower kettle connecting pipe (3).

[0009] Further improvement: One-half of the height difference between the bottom of the dropping funnel (8) and the lowest point (52) of the U-shaped tube is greater than the height difference between the outlet (51) of the U-shaped tube and the lowest point (52) of the U-shaped tube, so as to prevent the gas from being discharged through the U-shaped tube.

[0010] Another object of the present invention is to provide a method for producing gas using the above-mentioned device, comprising the following steps:

[0011] (1) Cover the kettle cover (2), and close the drip valve (7) and the gas valve (6);

[0012] (2) Select a more expensive raw material liquid from the two raw material liquids for producing gas and add it to the dropping funnel;

[0013] (3) After observing that the drip valve (7) does not leak, another raw material liquid with a lower price is added into the high-level kettle (1);

[0014] (4) Observe that there is a liquid level difference between the high and low kettles, and the liquid level difference does not change with time. After confirming that there is no gas leakage, open the gas valve (6);

[0015] (5) After the raw material liquid in the high-level kettle (1) flows into the low-level kettle (4), the gas valve (6) is closed;

[0016] (6) Open the drip valve (7) to prepare gas;

[0017] (7) Open the gas valve (6) to take out gas.

[0018] The speed control principle of the device provided by the present invention is:

[0019] When producing gas, the drip valve (7) is opened, and the reaction liquid begins to contact and react. When the drip valve (7) is just opened, the drip driving force is the largest, which is equal to the liquid column pressure from the liquid surface of the drip funnel (8) to the U-shaped tube outlet (51), and the dripping speed is the fastest, and the gas production speed is the fastest. As the produced gas gathers above the liquid surface of the low-level kettle, the gas pressure in the kettle gradually increases, and the liquid is pressed toward the high-level kettle (1) through the kettle bottom connecting pipe (3), and the dripping driving force is gradually reduced, the dripping speed is slowed down, and the gas production speed is slowed down; when the height of the liquid column pressed toward the high-level kettle (1) is equal to the height of the liquid column from the liquid surface of the drip funnel (8) to the U-shaped tube outlet (51), the dripping driving force is zero, the dripping stops, and the gas production stops.

[0020] When gas is needed, the gas valve (6) can be opened at any time to take gas. When the gas valve (6) is just opened, the pressure in the low-level kettle (4) is the largest and the gas taking speed is the fastest. As the gas is taken out, the gas pressure in the low-level kettle (4) decreases, which reduces the gas taking speed and also restores and increases the driving force for dripping. The dripping is restored and the speed is increased, and the gas production is restored and the speed is increased. A balance is soon reached, and the gas production and gas taking speeds are equal. Thereafter, the gas taking speed is constant. If the opening of the gas valve (6) is increased, at the beginning, the pressure in the low-level kettle (4) is the largest and the gas taking speed is the fastest. As the incremental gas is taken out, the gas pressure in the low-level kettle (4) decreases, which reduces the gas taking speed and also increases the driving force for dripping. The dripping speed is accelerated, and the gas production speed is increased. A balance is soon reached, and the gas production and gas taking speeds are equal. Thereafter, the larger gas taking speed is constant. The gas taking speed can be adjusted at any time by the gas valve (6).

[0021] Therefore, the device provided by the present invention realizes automatic control of gas production and gas extraction speed.

[0022] Beneficial effects of the present invention:

[0023] The device provided by the present invention realizes the automatic control of the gas production and gas extraction speed of liquid-liquid reaction, and also complies with the principle of "use at any time when turned on, stop at any time when turned off". It can effectively save drugs, control the occurrence and stop of the reaction, and add liquid drugs to the device at any time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of a liquid-liquid gas generator;

[0025] Figure numerals: 1-high-position kettle; 2-upper cover; 3-kettle bottom connecting pipe; 4-low-position kettle; 5-U-shaped tube; 6-air outlet valve; 7-drip valve; 8-drip funnel; 51-U-shaped tube outlet; 52-lowest point of U-shaped tube. DETAILED DESCRIPTION

[0026] The present invention is described below in conjunction with specific embodiments, but the content of the present invention is not limited thereto at all.

[0027] Example 1

[0028] Figure 1 The structure of the device provided by the present invention is shown. A liquid-liquid gas generator comprises a high-position kettle 1, a low-position kettle 4, a U-shaped tube 5 and a dropping funnel 8.

[0029] The upper cover 2 of the low-level kettle 4 is provided with a gas outlet pipe with a gas valve 6; the side wall of the low-level kettle 4 is connected to the dropping funnel 8 through the U-shaped tube 5. The height difference from the bottom of the dropping funnel 8 to the outlet 51 of the U-shaped tube is smaller than the liquid level difference between the high and low kettles to prevent the gas from being vented through the kettle low connecting tube 3. One-half of the height difference from the bottom of the dropping funnel 8 to the lowest point 52 of the U-shaped tube is larger than the height difference from the outlet 51 of the U-shaped tube to the lowest point 52 of the U-shaped tube to prevent the gas from being vented through the U-shaped tube 5.

[0030] The bottom of the high-position kettle 1 is connected to a kettle bottom connecting pipe 3 , and the other end of the kettle bottom connecting pipe 3 is connected to the bottom of the low-position kettle 4 .

[0031] Application Example 1

[0032] Preparation of ammonia

[0033] 1) Prepare a saturated solution of readily soluble ammonium bicarbonate for later use;

[0034] 2) Cover the kettle cover 2, and close the drip valve 7 and the gas valve 6;

[0035] 3) Add 20% sodium hydroxide solution into the dropping funnel;

[0036] 4) After observing and confirming that the drip valve 7 is leak-proof, add the prepared saturated ammonium bicarbonate solution into the high-level kettle 1;

[0037] 5) Observe the liquid level difference between the high and low level kettles, and after confirming that the liquid level difference does not change over time, that is, there is no gas leakage, open the gas valve 6;

[0038] 6) After the saturated ammonium bicarbonate solution in the high-level kettle 1 flows into the low-level kettle 4, close the gas valve 6;

[0039] 7) Open the drip valve 7 to prepare gas for standby use;

[0040] 8) When gas is needed, the gas valve 6 can be opened at any time to take in gas.

[0041] Application Example 2

[0042] Production of carbon dioxide

[0043] 1) Prepare a saturated solution of readily soluble ammonium bicarbonate for later use;

[0044] 2) Cover the kettle cover 2, and close the drip valve 7 and the gas valve 6;

[0045] 3) Add 98% concentrated sulfuric acid into the dropping funnel;

[0046] 4) After observing and confirming that the drip valve 7 is leak-proof, add the prepared saturated ammonium bicarbonate solution into the high-level kettle 1;

[0047] 5) Observe the liquid level difference between the high and low level kettles, and after confirming that the liquid level difference does not change over time, that is, there is no gas leakage, open the gas valve 6;

[0048] 6) After the saturated ammonium bicarbonate solution in the high-level kettle 1 flows into the low-level kettle 4, close the gas valve 6;

[0049] 7) Open the drip valve 7 to prepare gas for standby use;

[0050] 8) When gas is needed, the gas valve 6 can be opened at any time to take in gas.

[0051] Application Example 3

[0052] Preparation of hydrogen sulfide

[0053] 1) Prepare saturated solution of easily soluble sodium sulfide for later use;

[0054] 2) Cover the kettle cover 2, and close the drip valve 7 and the gas valve 6;

[0055] 3) Add 98% concentrated sulfuric acid into the dropping funnel;

[0056] 4) After observing and confirming that the drip valve 7 is leak-proof, add the prepared saturated sodium sulfide solution into the high-level kettle 1;

[0057] 5) Observe the liquid level difference between the high and low level kettles, and after confirming that the liquid level difference does not change over time, that is, there is no gas leakage, open the gas valve 6;

[0058] 6) After the saturated sodium sulfide solution in the high-level kettle 1 flows into the low-level kettle 4, close the gas valve 6;

[0059] 7) Open the drip valve 7 to prepare gas for standby use;

[0060] 8) When gas is needed, the gas valve 6 can be opened at any time to take in gas.

[0061] The above description is only a preferred specific implementation manner of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications, equivalent substitutions and improvements made by any technician familiar with the technical field within the technical scope disclosed by the present invention should be included in the scope of protection of the invention.

Claims

1. A liquid-liquid gas generator, characterized in that: It comprises a high-position kettle (1), a low-position kettle (4), a U-shaped tube (5) and a dropping funnel (8); The upper cover of the low-level kettle (4) is provided with a gas outlet pipe with a gas valve (6); the side wall of the low-level kettle (4) is connected to the dropping funnel (8) via a U-shaped tube (5); The bottom of the high-position kettle (1) is connected to a kettle bottom connecting pipe (3), and the other end of the kettle bottom connecting pipe (3) is connected to the bottom of the low-position kettle (4); One-half of the height difference between the bottom of the dropping funnel (8) and the lowest point (52) of the U-shaped tube is greater than the height difference between the outlet (51) of the U-shaped tube and the lowest point (52) of the U-shaped tube; The height difference between the bottom of the dropping funnel (8) and the U-shaped tube outlet (51) is smaller than the liquid level difference between the upper and lower kettles.

2. A method for producing gas using the liquid-liquid generator according to claim 1, characterized in that: The following steps are involved: (1) Cover the kettle cover (2) and close the drip valve (7) and the gas valve (6); (2) Select the more expensive of the two raw materials for producing gas and add it to the dropping funnel; (3) After observing that the drip valve (7) is not leaking, another raw material liquid with a lower price is added into the high-level kettle (1); (4) Observe that there is a liquid level difference between the high and low level kettles, and the liquid level difference does not change with time. After confirming that there is no gas leakage, open the gas valve (6); (5) After all the raw material liquid in the high-level kettle (1) flows into the low-level kettle (4), close the gas valve (6); (6) Open the drip valve (7) to prepare gas; (7) Open the gas valve (6) to take in gas.

3. The method according to claim 2, characterized in that: The raw material solution in step (2) includes a solution made of block solid.

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