Waste heat insulation type formaldehyde storage tank

Abstract

The utility model relates to the technical field of formaldehyde storage tanks, in particular to a waste heat insulation type formaldehyde storage tank which comprises a steam header, a tank body and a control cabinet. The steam header is respectively connected with a steam inlet pipe, a steam outlet pipe and a connecting pipe, the steam outlet pipe is provided with a mechanical automatic pressure regulating valve, and the connecting pipe is provided with a regulating valve; a coil pipe is arranged in the side wall of the tank body, one end of the coil pipe is connected with the connecting pipe, the other end of the coil pipe extends out of the tank body through a steam exhaust pipe, and a temperature sensor is arranged on the side wall of the tank body; and the control cabinet is respectively connected with the regulating valve and the temperature sensor. The waste heat insulation type formaldehyde storage tank can improve the resource utilization rate, reduce the operation cost, is safe, energy-saving and environment-friendly, adopts a full-automatic control system, does not need manual adjustment, reduces the labor intensity, and is high in reliability.

Description

Technical Field

[0001] The utility model relates to the technical field of formaldehyde storage tanks, in particular to a waste heat insulation type formaldehyde storage tank. Background Art

[0002] In the formaldehyde production process, formaldehyde storage tanks are indispensable and irreplaceable in ensuring safe production of equipment, energy conservation and emission reduction, and improving the overall management level. Formaldehyde storage tanks are used to store formaldehyde raw materials, finished products, and intermediate products. The structure of the formaldehyde storage tank can refer to the Chinese utility model patent with application number CN202222737945.4, entitled A formaldehyde storage tank for formaldehyde production. Most of the formaldehyde storage tanks in the prior art do not have an automatic heat preservation function. When the temperature inside the formaldehyde storage tank rises too high, it is easy to cause excessive pressure inside the tank, posing a safety risk. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a waste heat insulation type formaldehyde storage tank which can automatically control the steam volume and the storage tank temperature.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a waste heat insulation type formaldehyde storage tank, including a cylinder, a tank body and a control cabinet;

[0005] The sub-cylinders are respectively connected to a steam inlet pipe, a steam outlet pipe and a connecting pipe, the steam outlet pipe is provided with a mechanical automatic pressure regulating valve, and the connecting pipe is provided with a regulating valve;

[0006] A coil is provided inside the side wall of the tank body, one end of the coil is connected to the connecting pipe, and the other end of the coil extends out of the tank body through the exhaust pipe. A drain pipe and a temperature sensor are provided on the side wall of the tank body.

[0007] The control cabinet is connected with the regulating valve and the temperature sensor respectively.

[0008] Furthermore, a pressure relief valve is provided on the sub-cylinder.

[0009] Furthermore, a stirrer is provided in the tank body.

[0010] Furthermore, a drain valve is provided on the drain pipe.

[0011] Furthermore, the exhaust pipe is provided with a breathing valve and a condenser.

[0012] The beneficial effects of the utility model are as follows: a waste heat insulation type formaldehyde storage tank, which uses the waste heat resources of steam from a low-pressure steam generation source as a heat source, and combines a temperature control system and a steam control system to achieve a heat preservation effect for the storage tank; the steam volume is controlled by a mechanical automatic pressure regulating valve, and when there is insufficient steam in the storage tank, the steam inlet pipe is opened to increase the steam intake; through the regulating valve of the temperature control system, the overall steam intake connected to the steam inlet pipe is automatically adjusted when the temperature in the storage tank is too high or too low. The waste heat insulation type formaldehyde storage tank of the utility model can improve resource utilization, reduce operating costs, be safe, energy-saving and environmentally friendly, adopt a fully automatic control system, do not require manual adjustment, reduce labor intensity, and have high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural schematic diagram of a waste heat insulation type formaldehyde storage tank;

[0014] Description of labels:

[0015] 1. Steam outlet pipe; 2. Pressure regulating valve; 3. Steam inlet pipe; 4. Pressure relief valve; 5. Steam cylinder; 6. Connecting pipe; 7. Regulating valve; 8. Control cabinet; 9. Temperature sensor; 10. Breathing valve; 11. Tank body; 12. Coil; 13. Steam trap; 14. Drain pipe; 15. Condenser; 16. Exhaust pipe; 17. Agitator. DETAILED DESCRIPTION

[0016] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0017] The utility model provides a waste heat insulation type formaldehyde storage tank, which is used to solve the problem that the formaldehyde storage tank in the prior art has no automatic insulation function and needs to be manually adjusted to achieve the purpose of insulation, which has high labor intensity and high production cost.

[0018] Please refer to Figure 1 As shown, a waste heat insulation type formaldehyde storage tank of the utility model includes a sub-cylinder 5, a tank body 11 and a control cabinet 8;

[0019] The sub-cylinders 5 are respectively connected to the steam inlet pipe 3, the steam outlet pipe 1 and the connecting pipe 6. The steam outlet pipe 1 is provided with a mechanical automatic pressure regulating valve 2, and the connecting pipe 6 is provided with a regulating valve 7.

[0020] A coil 12 is provided in the side wall of the tank body 11, one end of the coil 12 is connected to the connecting pipe 6, and the other end of the coil 12 extends out of the tank body 11 through the exhaust pipe 16. A drain pipe 14 and a temperature sensor 9 are provided on the side wall of the tank body 11;

[0021] The control cabinet 8 is connected to the regulating valve 7 and the temperature sensor 9 respectively.

[0022] From the above description, it can be seen that the beneficial effects of the utility model are: using the waste heat resources of the steam from the low-pressure steam generation source as the heat source, combined with the temperature control system and the steam control system, to achieve the effect of heat preservation for the storage tank; the steam volume is controlled by the mechanical automatic pressure regulating valve 2, and when the steam in the storage tank is insufficient, the steam inlet pipe 3 is opened to increase the steam inlet volume; through the regulating valve 7 of the temperature control system, the overall steam inlet volume connected to the steam inlet pipe 3 is automatically adjusted when the temperature in the storage tank is too high or too low. The waste heat insulation formaldehyde storage tank of the utility model can improve resource utilization, reduce operating costs, be safe, energy-saving and environmentally friendly, adopt a fully automatic control system, do not need manual adjustment, reduce labor intensity, and have high reliability.

[0023] In an optional embodiment, a pressure relief valve 4 is provided on the sub-cylinder 5 .

[0024] From the above description, it can be seen that a pressure relief valve 4 is provided on the sub-cylinder 5. When an abnormality occurs in the mechanical automatic pressure regulating valve 2 or the regulating valve 7 causing excessive pressure in the sub-cylinder 5, the pressure relief valve 4 is automatically opened to improve the safety of the device.

[0025] In an optional embodiment, an agitator 17 is provided in the tank body 11 .

[0026] It can be seen from the above description that the stirrer 17 is used to stir the solution in the storage tank.

[0027] In an optional embodiment, a drain valve 13 is provided on the drain pipe 14 .

[0028] It can be seen from the above description that the steam trap 13 is located outside the reactor.

[0029] In an optional embodiment, the exhaust pipe 16 is provided with a breathing valve 10 and a condenser.

[0030] From the above description, it can be seen that the breathing valve 10 and the condenser 15 can make full use of the pressure bearing capacity of the storage tank itself, play a role in maintaining the air pressure balance of the tank body 11, and can reduce the volatilization of the medium in the tank body 11 and discharge it through the exhaust pipe 16.

[0031] Please refer to Figure 1 As shown, the first embodiment of the utility model is: a waste heat insulation type formaldehyde storage tank, including a sub-cylinder 5, a tank body 11 and a control cabinet 8; the material of the tank body 11 is carbon steel, low-temperature steel or stainless steel.

[0032] The steam cylinders 5 are respectively connected to the steam inlet pipe 3, the steam outlet pipe 1 and the connecting pipe 6. The steam inlet pipe 3 is connected to a low-pressure steam generating source. The steam of the low-pressure steam generating source is other low-pressure steam generated by the workshop production. The steam outlet pipe 1 is provided with a mechanical automatic pressure regulating valve 2. The mechanical automatic pressure regulating valve 2 controls the opening and closing of the steam outlet pipe 1 according to the steam pressure in the steam cylinder 5. The connecting pipe 6 is provided with a regulating valve 7; the regulating valve 7 is used to control the opening and closing of the connection to the steam inlet pipe 3.

[0033] A coil 12 is provided in the side wall of the tank body 11, one end of the coil 12 is connected to the connecting pipe 6, and the other end of the coil 12 extends out of the tank body 11 through the exhaust pipe 16. A drain pipe 14 and a temperature sensor 9 are provided on the side wall of the tank body 11; the temperature sensor 9 is a platinum resistance temperature sensor 9, which is a temperature sensor 9 made by utilizing a certain functional relationship between platinum resistance and temperature. Since platinum is very stable, it will not cause physical or chemical changes due to high or low temperature. The signal collection speed using the platinum resistance temperature sensor 9 is fast, and the error generated is small, which can greatly improve the operation speed and control accuracy of the control cabinet 8.

[0034] The control cabinet 8 is connected to the regulating valve 7 and the temperature sensor 9 respectively.

[0035] The steam cylinder 5 is provided with a pressure relief valve 4. The tank body 11 is provided with an agitator 17. The drain pipe 14 is provided with a steam trap 13. The exhaust pipe 16 is provided with a breathing valve 10 and a condenser.

[0036] The working principle of this embodiment is: the temperature change information in the storage tank body is detected by the temperature sensor 9, and the temperature change signal is transmitted to the control cabinet 8 in the form of an electrical signal, and the control cabinet 8 then feeds back the signal to the regulating valve 7; the regulating valve 7 plays the role of variable resistance in the pipeline and is responsible for adjusting the flow parameters of the steam. According to the performance of the raw materials stored in the tank body 11, the parameters of the mechanical automatic pressure regulating valve 2 and the pressure relief valve 4 in the steam control system and the parameters of the control cabinet 8 in the temperature control system are first set; then the steam is input into the sub-cylinder 5 through the steam inlet pipe 3. When the steam pressure in the sub-cylinder 5 is higher than the pressure set by the mechanical automatic pressure regulating valve 2, the mechanical automatic pressure regulating valve 2 opens to send the steam to other processes. When the mechanical automatic pressure regulating valve 2 or the regulating valve 7 is abnormal and causes the pressure in the sub-cylinder 5 to be too high, the pressure relief valve 4 is automatically opened. The steam in the sub-cylinder 5 enters the coil 12 through the steam inlet pipe 3, and the steam circulates through the coil 12 in the tank body 11 to achieve the effect of heating the tank body 11. When the temperature inside the tank 11 is higher than the set value, the temperature sensor 9 transmits the temperature signal to the control cabinet 8, and the control cabinet 8 feeds back the signal to the regulating valve 7, which controls the valve switch to close the steam inlet pipe 3; when the temperature inside the tank 11 is lower than the set value, it automatically opens the steam inlet pipe 3, thereby realizing automatic temperature control, and the formaldehyde is stirred by the stirrer 17 to make it evenly heated. After the steam passes through the coil 12, it is discharged from the drain pipe 14 through the steam trap 13. A small amount of waste gas generated by the formaldehyde in the tank 11 during the storage process passes through the breathing valve 10, and after being cooled by the condenser 15, it is discharged from the exhaust pipe into the subsequent treatment system for treatment.

[0037] In summary, the utility model utilizes the waste heat resources of the low-pressure steam generation source as the heat source, and combines the temperature control system and the steam control system to achieve the effect of heat preservation for the storage tank; the steam volume is controlled by the mechanical automatic pressure regulating valve, and when the steam in the storage tank is insufficient, the steam inlet pipe is opened to increase the steam inlet volume; through the regulating valve of the temperature control system, the overall steam inlet volume connected to the steam inlet pipe is automatically adjusted when the temperature in the storage tank is too high or too low. The waste heat insulation formaldehyde storage tank of the utility model can improve resource utilization, reduce operating costs, be safe, energy-saving and environmentally friendly, adopt a fully automatic control system, do not need manual adjustment, reduce labor intensity, and have high reliability.

[0038] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A waste heat insulation formaldehyde storage tank, characterized in that: Including sub-cylinders, tanks and control cabinets; The sub-cylinders are respectively connected to a steam inlet pipe, a steam outlet pipe and a connecting pipe, the steam outlet pipe is provided with a mechanical automatic pressure regulating valve, and the connecting pipe is provided with a regulating valve; A coil is provided inside the side wall of the tank body, one end of the coil is connected to the connecting pipe, and the other end of the coil extends out of the tank body through the exhaust pipe. A drain pipe and a temperature sensor are provided on the side wall of the tank body. The control cabinet is connected with the regulating valve and the temperature sensor respectively.

2. The waste heat insulation type formaldehyde storage tank according to claim 1, characterized in that: The sub-cylinder is provided with a pressure relief valve.

3. The waste heat insulation type formaldehyde storage tank according to claim 1, characterized in that: The tank body is provided with a stirrer.

4. The waste heat insulation type formaldehyde storage tank according to claim 1, characterized in that: The drain pipe is provided with a drain valve.

5. The waste heat insulation type formaldehyde storage tank according to claim 1, characterized in that: The exhaust pipe is provided with a breathing valve and a condenser.

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