CN111323447A - Experimental system and method for analyzing fan blade pyrolysis product - Google Patents

Abstract

The invention relates to an experimental system and a method for analyzing fan blade pyrolysis products, wherein the system comprises a flow display controller, a first mass flow controller, a second mass flow controller, a third mass flow controller, a mixing constant pressure tank, an electric heating furnace, a temperature control instrument, a pyrolysis reactor, a first high-pressure gas cylinder, a second high-pressure gas cylinder, an ultra-pure water storage tank, a water tank, a cooling bottle, a first liquid collecting bottle, a second liquid collecting bottle and a gas collecting tank; oxygen is filled in the first high-pressure gas cylinder, and the first high-pressure gas cylinder is connected with the mixing constant-pressure tank sequentially through the first throttling valve, the first pressure reducing valve and the first mass flow controller; helium is filled in the second high-pressure gas cylinder, and the second high-pressure gas cylinder is connected with the mixing constant-pressure tank through a second throttling valve, a second pressure reducing valve and a second mass flow controller in sequence; the ultrapure water storage tank is connected with the mixing constant pressure tank sequentially through the peristaltic pump, the electric heating furnace and the third mass flow controller. The invention can carry out the pyrolysis test on the retired fan blade and provides support for the recovery treatment of the retired blade.

Description

An experimental system and method for analyzing the pyrolysis products of fan blades

technical field

The invention relates to the technical field of wind power generation, in particular to an experimental system and method for analyzing the pyrolysis products of fan blades.

Background technique

Wind energy is currently recognized as one of the clean energy sources in the world, but the disposal of equipment that obtains wind energy after being scrapped is not always clean. While most components are recyclable, wind turbine blades are difficult to recycle efficiently due to the composition they are made of. It is estimated that 10kg of blade material is required for every 1kW of new installed capacity. Therefore, a 7.5MW wind turbine requires about 75 tons of blade material, which is a huge amount. Therefore, the recycling and disposal of blades after decommissioning will become an urgent problem to be solved.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an experimental system and method for analyzing the pyrolysis products of fan blades, to perform pyrolysis tests on fan blades, to analyze the pyrolysis products of fan blades, and to provide support for the recycling of blades after decommissioning.

The invention provides an experimental system for analyzing the pyrolysis products of fan blades, comprising a flow display controller, a first mass flow controller, a second mass flow controller, a third mass flow controller, a mixing constant pressure tank, Electric furnace, temperature control instrument, pyrolysis reactor, first high pressure gas cylinder, second high pressure gas cylinder, ultrapure water storage tank, water tank, cooling bottle, first liquid collection bottle, second liquid collection bottle, gas collection tank ;

The first high-pressure gas cylinder is filled with oxygen, which is connected to the mixed constant-pressure tank through the first throttle valve, the first pressure-reducing valve, and the first mass flow controller in sequence;

The second high-pressure gas cylinder is filled with helium, which is connected to the mixed constant-pressure tank through the second throttle valve, the second pressure-reducing valve, and the second mass flow controller in sequence;

The ultrapure water storage tank is connected to the mixed constant pressure tank through a peristaltic pump, an electric furnace and a third mass flow controller in sequence;

The mixing constant pressure tank is connected with the pyrolysis reactor through a one-way valve, and a corundum tray is arranged in the pyrolysis reactor;

The outlet of the pyrolysis reactor is connected in parallel with two pipelines, one pipeline is connected to the cooling bottle through the first stop valve, and the other pipeline is connected to the first liquid collection bottle through the second stop valve; the second liquid collector The bottle is connected in series with the first liquid collection bottle, and its outlet is connected to the gas collection tank through a diaphragm pump; the first liquid collection bottle, the second liquid collection bottle and the cooling bottle are placed in the water tank, and the collection bottle is placed in the water tank. A third stop valve is installed on the gas tank;

The flow display controller is connected to the first mass flow controller, the second mass flow controller and the third mass flow controller;

The temperature control instrument is connected with the electric heating furnace and the pyrolysis reactor.

The present invention also provides the above-mentioned test method for the experimental system for analyzing the pyrolysis products of fan blades, including:

Put the fan blade fragments used in the test on the corundum tray and put them into the pyrolysis reactor. After opening the first stop valve and closing the second stop valve, open the electric furnace and the pyrolysis reactor and set the temperature to the test value. Turn on the first mass flow controller, the second mass flow controller, and the third mass flow controller to the maximum value through the flow display controller, then open the first high-pressure gas cylinder, and slowly open it with reference to the measured value of the first mass flow controller After the first throttle valve and the first pressure reducing valve are used to roughly adjust the oxygen flow and pressure values within the measurement range of the first mass flow controller, the first mass flow controller is set to the test value through the flow display controller;

After the oxygen flow and pressure values are stable at the test set values, open the second high-pressure gas cylinder, slowly open the second throttle valve with reference to the measured value of the second mass flow controller, and coordinate with the second pressure-reducing valve to roughly adjust the helium flow and After the pressure value is within the measurement range of the second mass flow controller, set the second mass flow controller to the test value through the flow display controller;

When the helium gas flow and pressure are stabilized to the set value and the electric heating furnace is heated to the set value, refer to the measured value of the third mass flow controller, slowly increase the speed of the peristaltic pump, and roughly adjust the ultrapure water feed water volume at the third mass flow controller. After the measurement is within the range, set the third mass flow controller to the test value through the flow display controller;

When the values of the first mass flow controller, the second mass flow controller and the third mass flow controller are all stable at the set values and the temperature of the pyrolysis reactor rises to 250-300°C, the diaphragm pump and the second shut-off valve are turned on. and the third cut-off valve, close the first cut-off valve, slowly reduce the pressure in the pyrolysis reactor to a negative pressure and stabilize after adjusting the rotational speed of the diaphragm pump and the opening of the first pressure-reducing valve and the second pressure-reducing valve, and then close the first stop valve. Three stop valves, start the test and time it.

With the above solution, through the experimental system and method for analyzing the pyrolysis products of fan blades, the pyrolysis test of fan blades is carried out, and the pyrolysis products of fan blades are analyzed, so as to provide support for the recycling of blades after decommissioning.

The above description is only an overview of the technical solution of the present invention. In order to understand the technical means of the present invention more clearly, and implement it according to the content of the description, the preferred embodiments of the present invention are described in detail below with the accompanying drawings.

Description of drawings

FIG. 1 is a schematic structural diagram of an experimental system for analyzing the pyrolysis products of fan blades according to the present invention.

Labels in the figure:

1-flow display controller; 2.1-first mass flow controller; 2.2-second mass flow controller; 2.3-third mass flow controller; 3-mixing constant pressure tank; 4-check valve; 5-electric heating furnace; 6-temperature control instrument; 7.1-first pressure reducing valve; 7.2-second pressure reducing valve; 8.1-first throttle valve; 8.2-second throttle valve; 9-peristaltic pump; 10-corundum tray; 11-pyrolysis reactor; 12.1-first high-pressure gas cylinder; 12.2-second high-pressure gas cylinder; 13-ultrapure water storage tank; 14.1-first shut-off valve; 14.2-second shut-off valve; 15-water tank; 16 -Cooling bottle; 17.1-First liquid collection bottle; 17.2-Second liquid collection bottle; 18-Diaphragm pump; 19-Gas collection tank.

Detailed ways

The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments. The following examples are intended to illustrate the present invention, but not to limit the scope of the present invention.

Referring to Figure 1, this embodiment provides an experimental system for analyzing the pyrolysis products of fan blades, including a flow display controller 1, a first mass flow controller 2.1, a second mass flow controller 2.2, a third Mass flow controller 2.3, mixing constant pressure tank 3, electric heating furnace 5, temperature control instrument 6, pyrolysis reactor 11, first high pressure gas cylinder 12.1, second high pressure gas cylinder 12.2, ultrapure water storage tank 13, water tank 15 , cooling bottle 16, first liquid collection bottle 17.1, second liquid collection bottle 17.2, gas collection tank 19;

The first high-pressure gas cylinder 12.1 is filled with oxygen, which is sequentially connected to the mixing constant pressure tank 3 through the first throttle valve 8.1, the first pressure reducing valve 7.1, and the first mass flow controller 2.1;

The second high-pressure gas cylinder 12.2 is filled with helium, which is sequentially connected to the mixing constant pressure tank 3 through the second throttle valve 8.2, the second pressure reducing valve 7.2, and the second mass flow controller 2.2;

The ultrapure water storage tank 13 is connected to the mixing constant pressure tank 3 through the peristaltic pump 9, the electric heating furnace 5 and the third mass flow controller 2.3 in turn;

The mixing constant pressure tank 3 is connected with the pyrolysis reactor 11 through the one-way valve 4, and the pyrolysis reactor 11 is provided with a corundum tray 10;

The outlet of the pyrolysis reactor 11 is connected in parallel with two pipelines, one pipeline is connected to the cooling bottle 16 through the first stop valve 14.1, and the other pipeline is connected to the first liquid collection bottle 17.1 through the second stop valve 14.2; The liquid bottle 17.2 is connected in series with the first liquid collection bottle 17.1, and its outlet is connected to the gas collection tank 19 through the diaphragm pump 18; the first liquid collection bottle 17.1, the second liquid collection bottle 17.2, and the cooling bottle 16 are placed in the water tank 15. A third stop valve is installed on the tank 19;

The flow display controller 1 is connected to the first mass flow controller 2.1, the second mass flow controller 2.2, and the third mass flow controller 2.3;

The temperature control instrument 6 is connected to the electric heating furnace 5 and the pyrolysis reactor 11 .

The oxygen in the first high-pressure gas cylinder 12.1 enters the inlet of the first mass flow controller 2.1 after passing through the first throttle valve 8.1 and the first pressure reducing valve 7.1 in turn, and the oxygen passing through the first mass flow controller 2.1 enters the mixed constant pressure Tank 3, the helium in the second high-pressure gas cylinder 12.2 enters the inlet of the second mass flow controller 2.2 through the second throttle valve 8.2 and the second pressure reducing valve 7.2 in turn, and passes through the helium of the second mass flow controller 2.2. The gas enters the mixing constant pressure tank 3, and the ultrapure water in the ultrapure water storage tank 13 is pressurized by the peristaltic pump 9 and then enters the electric heating furnace 5 for heating and gasification, and the ultrapure water after gasification enters the third mass flow controller 2.3. Enter the mixing constant pressure tank 3, wherein the temperature of the electric heating furnace 5 is controlled by the temperature control instrument 6, and the mixed gas in the mixing constant pressure tank 3 enters the pyrolysis reactor 11 after passing through the one-way valve 4. The temperature is controlled by the temperature control instrument 6, a corundum tray 10 is arranged in the pyrolysis reactor 11, and two pipelines are connected in parallel at the outlet of the pyrolysis reactor 11, one of which enters the cooling bottle 16 through the first cut-off valve 14.1. The other pipeline is connected to the inlet of the first liquid collection bottle 17.1 through the second stop valve 14.2, the outlet of the first liquid collection bottle 17.1 is connected to the inlet of the second liquid collection bottle 17.2, and the outlet of the second liquid collection bottle 17.2 is connected to the diaphragm The inlet of the pump 18 is connected, and the outlet of the diaphragm pump 18 is connected with the gas collection tank 19, wherein the first liquid collection bottle 17.1, the second liquid collection bottle 17.2 and the cooling bottle 16 are placed in the water tank 15 and cooled with ice water, and the gas collection tank 19 is on the A third shut-off valve 14.3 is installed.

The experimental system for analyzing the pyrolysis products of fan blades uses a mixture of helium, oxygen and water vapor to assist the electric heating furnace, which can quantitatively analyze the effects of temperature, oxygen concentration, water vapor concentration, pyrolysis time and other factors on fan blades. The influence of pyrolysis products, the use of diaphragm pump and gas mixing constant pressure tank to achieve pressure control in the pyrolysis reactor. It can conduct pyrolysis tests on fan blades, analyze the pyrolysis products of fan blades, and provide support for the recycling of blades after decommissioning.

The test method of this experimental system is as follows:

Put the fan blade fragments used in the test on the corundum tray 10 and put them into the pyrolysis reactor 11, open the first cut-off valve 14.1 and close the second cut-off valve 14.2, open the electric heating furnace 5 and the pyrolysis reactor 11 and set the temperature. Set as the test value, and simultaneously open the first mass flow controller 2.1, the second mass flow controller 2.2, and the third mass flow controller 2.3 to the maximum value through the flow display controller 1, and then open the first high-pressure gas cylinder 12.1, Referring to the measured value of the first mass flow controller 2.1, slowly open the first throttle valve 8.1 and cooperate with the first pressure reducing valve 7.1 to roughly adjust the oxygen flow and pressure values within the measurement range of the first mass flow controller 2.1, and then control the flow through the flow display. Instrument 1 sets the first mass flow controller 2.1 to the test value;

After the oxygen flow and pressure values are stabilized at the test set values, open the second high-pressure gas cylinder 12.2, refer to the measured value of the second mass flow controller 2.2, slowly open the second throttle valve 8.2 and coordinate with the second pressure reducing valve 7.2 for rough adjustment After the helium flow and pressure values are within the measurement range of the second mass flow controller 2.2, the second mass flow controller 2.2 is set as the test value through the flow display controller 1;

When the helium gas flow and pressure are stabilized to the set value and the electric heating furnace 5 is heated to the set value, refer to the measured value of the third mass flow controller 2.3, slowly increase the speed of the peristaltic pump 9, and roughly adjust the ultrapure water supply to the third mass After the flow controller 2.3 is within the measurement range, the third mass flow controller 2.3 is set to the test value through the flow display controller 1;

When the values of the first mass flow controller 2.1, the second mass flow controller 2.2 and the third mass flow controller 2.3 are all stable at the set values and the temperature of the pyrolysis reactor 11 rises to 250-300°C, the diaphragm pump 18 is turned on. , the second cut-off valve 14.2 and the third cut-off valve, close the first cut-off valve 14.1, and by adjusting the rotational speed of the diaphragm pump 18 and the opening of the first pressure-reducing valve 7.1 and the second pressure-reducing valve 7.2, slowly remove the inside of the pyrolysis reactor 11. After the pressure is reduced to negative pressure and stabilized, close the third stop valve, start the test and time it.

The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. It should be pointed out that for those skilled in the art, some improvements can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims (2)

1. An experimental system for analyzing fan blade pyrolysis products is characterized by comprising a flow display control instrument (1), a first mass flow controller (2.1), a second mass flow controller (2.2), a third mass flow controller (2.3), a mixed constant pressure tank (3), an electric heating furnace (5), a temperature control instrument (6), a pyrolysis reactor (11), a first high-pressure gas cylinder (12.1), a second high-pressure gas cylinder (12.2), an ultrapure water storage tank (13), a water tank (15), a cooling bottle (16), a first liquid collecting bottle (17.1), a second liquid collecting bottle (17.2) and a gas collecting tank (19);

the first high-pressure gas bottle (12.1) is filled with oxygen and is connected with the mixing constant-pressure tank (3) sequentially through a first throttling valve (8.1), a first pressure reducing valve (7.1) and a first mass flow controller (2.1);

helium is filled in the second high-pressure gas bottle (12.2), and is connected with the mixing constant-pressure tank (3) sequentially through a second throttling valve (8.2), a second pressure reducing valve (7.2) and a second mass flow controller (2.2);

the ultrapure water storage tank (13) is connected with the mixing constant-pressure tank (3) sequentially through a peristaltic pump (9), an electric heater (5) and a third mass flow controller (2.3);

the mixing constant-pressure tank (3) is connected with the pyrolysis reactor (11) through a one-way valve (4), and a corundum tray (10) is arranged in the pyrolysis reactor (11);

the outlet of the pyrolysis reactor (11) is connected with two pipelines in parallel, wherein one pipeline is connected with the cooling bottle (16) through a first stop valve (14.1), and the other pipeline is connected with the first liquid collecting bottle (17.1) through a second stop valve (14.2); the second liquid collecting bottle (17.2) is connected with the first liquid collecting bottle (17.1) in series, and the outlet of the second liquid collecting bottle is connected with the gas collecting tank (19) through a diaphragm pump (18); the first liquid collecting bottle (17.1), the second liquid collecting bottle (17.2) and the cooling bottle (16) are arranged in the water tank (15), and a third stop valve is arranged on the gas collecting tank (19);

the flow display control instrument (1) is connected with the first mass flow controller (2.1), the second mass flow controller (2.2) and the third mass flow controller (2.3);

the temperature control instrument (6) is connected with the electric heating furnace (5) and the pyrolysis reactor (11).

2. A testing method for an experimental system for analyzing fan blade pyrolysis products of claim 1, comprising:

the fan blade fragments used in the test are placed on a corundum tray (10) and are placed in a pyrolysis reactor (11), after a first stop valve (14.1) is opened and a second stop valve (14.2) is closed, the electric heating furnace (5) and the pyrolysis reactor (11) are started, the temperature is set as a test value, meanwhile, the first mass flow controller (2.1), the second mass flow controller (2.2) and the third mass flow controller (2.3) are opened to the maximum value through the flow display controller (1), then the first high-pressure gas cylinder (12.1) is opened, the first throttle valve (8.1) is slowly opened by referring to the measurement value of the first mass flow controller (2.1) and the first pressure reducing valve (7.1) is matched to roughly adjust the oxygen flow and the pressure value within the measurement range of the first mass flow controller (2.1), setting a first mass flow controller (2.1) to a test value by a flow display controller (1);

after the oxygen flow and the pressure value are stabilized at the test set values, a second high-pressure gas cylinder (12.2) is opened, a second throttle valve (8.2) is slowly opened by referring to the measurement value of a second mass flow controller (2.2), the helium flow is roughly adjusted by matching with a second pressure reducing valve (7.2), and the pressure value is in the measurement range of the second mass flow controller (2.2), and the second mass flow controller (2.2) is set as the test value through a flow display controller (1);

when the flow rate and the pressure of the helium gas are stabilized to set values and the temperature of the electric heating furnace (5) is raised to the set values, referring to the measurement value of the third mass flow controller (2.3), slowly increasing the rotating speed of the peristaltic pump (9), roughly adjusting the water supply amount of the ultrapure water to be in the measurement range of the third mass flow controller (2.3), and setting the third mass flow controller (2.3) as a test value through the flow display controller (1);

when the values of the first mass flow controller (2.1), the second mass flow controller (2.2) and the third mass flow controller (2.3) are all stable at the set values and the temperature of the pyrolysis reactor (11) is increased to 250-300 ℃, the diaphragm pump (18), the second stop valve (14.2) and the third stop valve are opened, the first stop valve (14.1) is closed, the pressure in the pyrolysis reactor (11) is slowly reduced to negative pressure and stable by adjusting the rotating speed of the diaphragm pump (18) and the opening degrees of the first pressure reducing valve (7.1) and the second pressure reducing valve (7.2), the third stop valve is closed, and the test and timing are started.

Images