CN1259484A

CN1259484A - Method and equipment for quickly conveniently and continuously preparing carbon dioxide

Info

Publication number: CN1259484A
Application number: CN98123697A
Authority: CN
Inventors: 杜志刚
Original assignee: 杜志刚
Current assignee: Shanxi Jitaly Coal Mine Safety Equipment Co., Ltd.
Priority date: 1998-11-06
Filing date: 1998-11-06
Publication date: 2000-07-12
Anticipated expiration: 2018-11-06
Also published as: CN1107642C

Abstract

A quick and continuous method for prodn. of carbon dioxide uses sulfuric acid and ammonium bicarbonat as raw material through chemical reaction to produce CO2 gas. Said method can continuously produce CO2,its yield is 360-2500 cubic meter per hour, pressure is 0.6 HPa and concn. is 100%. The gas prodn. speed, flow and pressure can be optionally regulated. Besides the CO2 is used for extinguishing fire, it can also be used in granary preservation, agricultural plastic greenhouse plant CO2 gas fertilizer to promote growth. The invented CO2 gas prodn. equipment need not use electric power simple in operation, service life longer than 10 years.

Description

Method and equipment for quickly, conveniently and continuously preparing carbon dioxide

Fast, convenient and continuous CO production₂The method and the equipment belong to the field of public security fire fighting, and are used for quickly and conveniently preparing CO₂And at the same time for extinguishing fires.

Through comprehensive retrieval at home and abroad, currently used CO₂Extinguishing by CO₂High pressure gas cylinder as CO₂The air source extinguishes fire, and has the defects of limited air storage amount, high pressure danger and inconvenient use; coal spontaneous combustion fire extinguishment under a coal mine, one is extinguishment by using fuel oil waste gas. The other is nitrogen fire extinguishing by a high-pressure separation nitrogen making machine, and has the common defects that inert gas for fire extinguishing contains oxygen components, is unsafe, and has high temperature, poor safety performance, inconvenient use, high material consumption, high energy consumption and heavy pollution.

The invention aims to solve the problems, and provides a method for quickly, conveniently and continuously preparing CO according to fire disasters and fire extinguishing requirements of different places and under different conditions₂The method and the fire extinguishing equipment thereof can be suitable for fire extinguishing of industrial and mining enterprises and use of public security fire departments.

The technical scheme of the invention is to use sulfuric acid and carbonProducing CO by chemical reaction by using ammonium hydrogen acid as raw material₂A gas having the chemical formula:

CO Collection from the reactants₂And use it to extinguish fires.

There are three methods for implementing the above technology:

the first method comprises the following steps: controlling sulfuric acid, adding sulfuric acid into ammonium bicarbonate container to prepare CO₂A gas.

The second method is as follows: controlling ammonium bicarbonate, adding ammonium bicarbonate into sulfuric acid container to prepare CO₂A gas.

The third method is as follows: controlling sulfuric acid and ammonium bicarbonate, adding the above two raw materials into a mixer at the same time to prepare CO₂A gas.

The common features of the three methods are:

1. ammonium bicarbonate and sulfuric acid, the reaction of the two species proceeds very rapidly and in rapid succession. Solid ammonium bicarbonate can also react with sulfuric acid quickly, and in order to benefit the chemical reaction speed, ammonium bicarbonate is made into lake shape by using part of water.

2. The reaction is an irreversible reaction process, and the raw materials for the reaction can be completely reacted.

3. In order to ensure that the sulfuric acid is completely reacted, the dosage of ammonium bicarbonate is 3 percent more than the theoretical dosage during the material preparation, so that the sulfuric acid does not exist in the reactants.

4. The dissolution of ammonium bicarbonate in water is an endothermic process, the dissolution of ammonium sulfate in water is also an endothermic process, CO₂The large amount of release after generation is also an endothermic process, only the dissolution of sulfuric acid in water is an exothermic process, and the final equilibrium of the reaction is a slightly endothermic process.

Fast, convenient and continuous CO production₂Compared with the prior art, the method and the equipment thereof have the following advantages:

1. the gas production speed is high, two devices are connected in parallel, one device is used, the other device discharges and charges, the gas can be continuously produced after long-term use, and the small-sized equipment can produce 360m gas per hour³Large, largeThe gas produced by the equipment is 2500m per hour³The pressure and flow of gas generated can be adjustedat will when the pressure of gas generated reaches 0.6 MPa.

2、CO₂The gas production concentration is 100%.

3. The temperature of the air outlet is lower than the ambient temperature.

4. The method has the advantages of no electricity consumption, simple operation, suitability for various environments, no pollution before and after gas production and before and after fire extinguishment, and residues after reaction are a small amount of ammonium bicarbonate and a large amount of ammonium sulfate and water, and can be directly used as farmland fertilizers.

5. Can produce gas conveniently, quickly and continuously, is safe and reliable to use, and eliminates the prior CO preparation and use₂A deficiency in the art.

6. In addition to CO₂Besides fire extinguishing, the plant fire-extinguishing agent can also be used for grain bin fresh-keeping, agricultural plastic greenhouse plant CO₂Promoting growth and fertilizing, etc.

The rapid, convenient and continuous production of CO is further described with reference to the accompanying drawings₂And an apparatus therefor.

FIG. 1 shows the first production of CO₂A method and apparatus diagram;

FIG. 2 shows a second production of CO₂A method and apparatus diagram;

FIG. 3 shows a third process for producing CO₂A method and apparatus diagram; wherein 1, a sulfuric acid container; 2. an ammonium bicarbonate container; 3. a sulfuric acid charging port; 4. an ammonium bicarbonate charging port; 5. a residue discharge outlet; 6. CO 2₂An output valve 7, a control valve; 8. a pressure balance tube; 9. a mixer; 10. a safety valve; 11. a pressure gauge;

now produce CO per hour₂Gas 360m³The device is used for example, when in use, the residue discharge opening (5) and CO on the device are closed₂An output valve (6) and a control valve (7). Will be provided with223kg of ammonium bicarbonate and water are mixed into paste, then the paste is added into an ammonium bicarbonate container (2), and then an ammonium bicarbonate charging port (4) is closed. 134kg of 98% strength sulfuric acid are introduced into a sulfuric acid container (1), which is then filled with sulfuric acidThen the sulfuric acid charging port (3) is closed, a control valve (7) connected with the sulfuric acid container (1) and the ammonium bicarbonate container (2) is opened, at the moment, the two materials meet, and CO is immediately marked₂Gas is generated, a certain pressure is generated in the closed equipment, when the pressure exceeds 0.6MPA, the safety valve (10) can be automatically opened, and CO can be used₂The output valve (6) is opened to discharge CO₂By pipeline to fire district, or requiring CO₂The granary or plantation in question requires CO₂Where (a) is located. The equipment can completely react the sulfuric acid and the ammonium bicarbonate within 10 minutes, and simultaneously, CO is removed₂The output valve (6) outputs 60m³CO at normal temperature and pressure₂A gas. The two devices are connected in parallel, one device is operated, the other device is opened to discharge the reaction product, and the materials are continuously charged for use. When CO is needed₂After the work is finished, the water is washed by clean water and then stored for standby.

Claims

1. Fast, convenient and continuous CO production₂The method and the equipment thereof use sulfuric acid and ammonium bicarbonate as raw materials to generate CO through chemical reaction₂Water and ammonium sulfate, the reaction equation of which is: CO Collection from the reactants₂There are three methods for achieving the above chemical reaction: firstly, controlling sulfuric acid, adding the sulfuric acid into an ammonium bicarbonate container (2) to prepare CO₂A gas; secondly, controlling ammonium bicarbonate, adding the ammonium bicarbonate into a sulfuric acid container (1) to prepare CO₂A gas; finally, controlling the sulfuric acid and the ammonium bicarbonate, and simultaneously adding the two raw materials into a mixer (9) to prepare CO₂A gas; produced CO₂Not only can be used for public security fire fighting, but also can be used for agricultural gas fertilizer, food preservation and the like.

2. CO preparation as claimed in claim 1₂The three methods of (2) have common features: ammonium bicarbonate and sulfuric acid, the reaction of the two substances is very rapid and takes place in a short time, solid ammonium bicarbonate can also react with sulfuric acid rapidly, and in order to increase the chemical reaction speed, the ammonium bicarbonate is mixed during the material preparationPreparing the ammonium into lake shape by partial water, the reaction of sulfuric acid and ammonium bicarbonate is an irreversible reaction process, the sulfuric acid and ammonium bicarbonate can be completely reacted, in order to make the sulfuric acid completely react, the dosage of ammonium bicarbonate is 3% more than theoretical dosage when the material is prepared, so that the sulfuric acid is not existed in the reactant, the dissolution ofammonium bicarbonate in water is an endothermic process, the dissolution of ammonium sulfate in water is an endothermic process, CO is an endothermic process₂The large amount of emission after generation is also an endothermic process.

3. The rapid, convenient and continuous production of CO as claimed in claim 1₂Is composed ofA sulfuric acid container (1), an ammonium bicarbonate container (2), a sulfuric acid charging port (3), an ammonium bicarbonate charging port (4), a residue discharge port (5), CO₂The device comprises an output valve (6), a control valve (7), a pressure balance pipe (8), a mixer (9), a safety valve (10) and a pressure gauge (11), and is characterized in that sulfuric acid in a sulfuric acid container (1) meets ammonium bicarbonate in an ammonium bicarbonate container (2) through the control valve (7) or is mixed in the mixer (9) to perform a chemical reaction to generate CO₂Gas, and CO is introduced through the pipeline₂The gas is sent to the place where it is needed.

4. The rapid, convenient and continuous production of CO as claimed in claim 1₂The using method of the equipment can produce CO per hour₂Gas 360m³The device is characterized in that a residue discharge opening (5) and CO on the device are closed₂An output valve (6) and a control valve (7), after 223kg of ammonium bicarbonate and common water are prepared into paste, all the paste is added into an ammonium bicarbonate container (2), and then an ammonium bicarbonate charging port (4) is closed; the method comprises the steps of charging 134kg of sulfuric acid with the concentration of 98% into a sulfuric acid container (1), then closing a sulfuric acid charging port (3), and opening a control valve (7) connecting the sulfuric acid container (1) and an ammonium bicarbonate container (2), wherein the two materials meet at the moment, and CO is immediately available₂Gas is generated and pressure is generated in the closed equipment, when the pressure exceeds O.6Mpa, the safety valve (10) can be automatically opened, and CO can be introduced at the moment₂The output valve (6) is opened to discharge CO₂By pipeline to fire district, or requiring CO₂The granary or plantation in question requires CO₂Where the device can be used within 10 minutesThe sulfuric acid and ammonium bicarbonate are completely reacted, and CO is generated₂The output valve (6) outputs 60m³CO at normal temperature and pressure₂Gas, two devices connected in parallel, one operating, the other CO off₂An output valve (6) is opened, the residue discharge port (5) is opened to discharge the reaction product, and the mixture is continuously charged and used for long time when CO is needed₂And after the work is finished, cleaning the equipment with clean water and storing for later use.

5. CO produced according to claim 1₂The gas concentration is 100 percent, the gas production pressure is O.6Mpa, and the gas production is 360m³And 2500m³The pressure and speed of gas generation can be adjusted at will, and CO can be used for keeping grain or food fresh₂Filling gas into granary or food fresh-keeping container, discharging air in granary or food fresh-keeping container, and introducing CO₂The gas fills the space of the preserved objects to prevent the preserved objects from contacting with the air, thereby achieving the effect of preservation.

6. CO produced according to claim 1₂The gas can be directly sent into an agricultural plastic greenhouse or a flower seedling greenhouse to be used as gas fertilizer, the equipment has safe and reliable operation and quick and convenient use, does not use a power supply and generates CO₂Before and after and use of CO₂The method has no pollution before and after the reaction, and the residues after the reaction are a small amount of ammonium bicarbonate, a large amount of ammonium sulfate and water, and can be directly used as farmland fertilizer.