Boiler capable of continuously, controllably and safely working by taking metal sodium and water as fuels

Abstract

The invention discloses a continuous, controllable and safe-working boiler with Na-based metal and H2O as fuel. The boiler structurally comprises a tank body 1, a 2-Na particle protection liquid, a 3-Na particle feeder, a 4-Na particle extruder, a 5-NaOH liquid discharge valve, a porous partition plate 6, a water vapor / H2 storage tank and a gas outlet pipe / valve 7, an inner / outer liquid level / liquid gravity meter 8, a temperature / pressure meter 9, a high-pressure water inlet pipe / valve 10 and the like. By means of the structure, it can be guaranteed that the boiler with Na-based metal and H2O as fuel can work continuously, controllably and safely.

Description

[0001] A boiler that uses sodium metal + water as fuel and operates continuously, controllably and safely involves the technical field of special boiler technology.

[0002] Prior art background:

[0003] Boiler is a kind of energy conversion equipment. The energy input to the boiler is in the form of chemical energy in the fuel, electrical energy, high-temperature flue gas and other thermal energy. After the boiler converts, it outputs steam, high-temperature water or organic heat carrier with some thermal energy. It is mostly used in thermal power plants, ships, locomotives and industrial and mining enterprises.

[0004] A boiler that uses sodium metal + water as fuel to work continuously, controllably and safely. Its principle is: Na-based metal is input into water and reacts chemically with water to generate a large amount of heat energy and pressure. Its chemical equation is: Na+H2O---H2+NaoH+Q (heat)+V (22.4L / mol standard state)

[0005] According to the search of information on the Chinese Patent Network and the International Patent Network, no general or special boiler equipment technology products that can operate continuously, controllably and safely using sodium metal + water as raw materials have been found.

[0006] References:

[0007] Chinese Journal of Chemistry January 2010-October 2021

[0008] Chinese Journal of Applied Chemistry February 2002-January 2022

[0009] China Patent Network International Patent Network Boiler Design Manual

[0010] The purpose of this case is to provide a boiler technology that uses sodium metal + water as fuel to operate continuously, controllably and safely.

[0011] The technical implementation method of this case:

[0012] The basic principle of this case is: Na-based metal is input into H2O to produce a chemical reaction: Na+H2O---H2+NaoH+Q(heat)+V(22.4L / mol)

[0013] 1 mol (23 g) of Na metal reacts with water to produce 1 gram of H2 gas and a volume of 11.2 L, NaOH (40 g) and 411KJ's Hot able [Reference: 1g of Na metal reacts with sufficient chlorine gas to release 17.87KJ of heat; Due to limited capabilities, Na gold was not retrieved. Data on the heat released by chemical reactions with H2O 】

[0014] The hydrolysis reaction of Na metal and H2O produces:

[0015] 1. The conversion of Na metal into NaOH releases heat, and a large amount of heat turns part of the water into water vapor.

[0016] 2. 1 mol (23 g) of Na produces 1 gram of H2 gas, and the volume increases by 11.2 L [standard state].

[0017] The hydrolysis reaction of Na metal and H2O is accompanied by the generation of a large amount of heat energy, and the H2 gas [11.2L / mol standard state] greatly increases the original volume. This provides a good basis for the conversion of the chemical reaction energy of Na metal and H2O into other energy utilization methods.

[0018] Refer to the instructions Figure 1 Main view, schematic Figure 2 B direction view

[0019] This case describes a boiler structure that uses Na metal and H2O as fuel and operates continuously, controllably, and safely.

[0020] In the figure, 1-tank body 2-Na particle protection liquid 3-Na particle feeder 4-Na particle extruder 5-NaoH liquid discharge valve 6-porous partition 7-water vapor / H2 storage tank and outlet pipe / valve 8-liquid level / liquid specific gravity meter 9-temperature / pressure meter 10-high-pressure water inlet pipe / valve

[0021] 2-Na particle protection liquid protects Na particles from oxidation in 3-Na particle feeder, 3-Na particle feeder is connected to 4-Na particle extruder; 4-Na particle extruder is connected to 1-tank body and quantitatively delivers Na metal into 1-tank body;

[0022] 10- High-pressure water inlet pipe / valve penetrates into 1-tank body and is connected to 4-Na pellet extruder, and quantitatively supplies high-pressure water to the 4-Na pellet extruder head, so that Na metal reacts quickly with H2O to generate a large amount of water vapor, H2, and NaoH.

[0023] 7-The water vapor / H2 storage tank and the gas outlet pipe / valve are located above the 1-tank body, and can discharge the water vapor, H2, etc. in the 1-tank out of the 1-tank;

[0024] 8-Liquid level / liquid specific gravity meter, 9-temperature / pressure meter, etc. are located above the 1-tank body, and are used to monitor and control the temperature, pressure, etc. of the reaction between Na metal and H2O in the 1-tank;

[0025] 1- There are 6-porous partitions in the tank body to cut off the foam, 5-NaoH liquid discharge valve is at the lower part of 1-tank body, when the concentration of NaoH reaches a certain level, 8-liquid level / liquid specific gravity meter controls 5-NaoH liquid discharge valve to release high concentration NaoH.

[0026] 4-The screw of the Na pellet extruder generally adopts an equidistant and unequal diameter screw for the extrusion of Na metal pellets.

[0027] By adopting the above structure, a continuous, controllable and safe reaction between Na metal and H2O can be ensured, and the generated H2 gas, water vapor, NaOH, etc. can be safely utilized.

[0028] Application examples:

[0029] In 1992, we bought 20kg of 500g / bottle chemically pure Na metal particles from the Institute of Applied Chemistry of the Chinese Academy of Sciences to conduct a hydrogen production experiment. After continuous structural improvements... After 2016, we finally solved the problems of safe transportation of Na particles, escape from the screw, and safety control using a small experimental boiler with the above structure. The reaction between Na metal particles and water can be carried out continuously and controllably, and water vapor, H2 gas, pressure, NaOH, etc. can be stably output.

[0030] Advantages of the new technology:

[0031] 1. In this case, a boiler that uses sodium metal + water as fuel and works continuously and controllably can continuously, controllably and safely make Na metal and H2O react in the boiler and output energy.

[0032] 2. The boiler with the above structure solves the problem of safe and quantitative transportation of Na metal particles. The boiler with this structure starts and stops quickly.

[0033] 3. The boiler with the above structure has a simple structure and low manufacturing cost.

[0034] 4. The boiler with the above structure produces water vapor, hydrogen and NaoH. The energy of Na-based metal can be utilized three times in power generation and waste heat can be used for heating. It can also produce chemical product NaoH (caustic soda).

Claims

1. Claim 1 A boiler that uses Na metal + H2O as fuel and operates continuously, controllably and safely, characterized in that: The Na particles with 2-Na metal particle protection liquid are sent to the 3-Na metal particle feeder, and then transported to the 4-Na particle extruder by the 3-Na metal particle feeder. The Na particles are extruded by the 4-Na particle extruder and transported to the 1-tank to react with the H2O therein to generate NaOH, H2, heat and pressure; the water vapor and H2 in the 1-tank are discharged through the 6-porous partition, the 7-water vapor / H2 storage tank and the outlet pipe / valve under the control of the 9-temperature / pressure instrument.

2. According to claim 1, a boiler that uses Na metal + H2O as fuel to operate continuously, controllably and safely is characterized by: The high concentration NaoH liquid in the 1-tank is discharged through the 5-NaoH liquid discharge pipe / valve under the control of the 8-liquid level / liquid specific gravity meter.

3. A boiler that uses Na metal + H2O as fuel and operates continuously, controllably and safely according to claims 1 and 2, characterized in that: 10- High-pressure water inlet pipe / valve penetrates into 1-tank body and is connected to 4-Na pellet extruder head, and quantitatively supplies high-pressure water to 4-Na pellet extruder head, so that Na metal reacts quickly with H2O to generate water vapor, NaoH, and H2.

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