Pollution discharging and separating device of negative pressure type evaporation heat exchange equipment

Abstract

The utility model relates to a blowdown separation device of negative pressure type evaporation heat exchange equipment, which consists of a negative pressure separation tank, a heating coil, a steam condensate drainage device, a liquid inlet valve, a blowdown valve, a temperature regulating valve, a pressurizing valve, a pressure regulating valve, a demister, a negative pressure separation tank pressure gauge, a negative pressure separation tank thermometer, a negative pressure separation tank liquid level meter and a safety valve, a heating steam pipeline connected with the inlet end of the heating coil is provided with a temperature regulating valve, and the outlet end of the heating coil is connected with a steam condensate drainage device; a pressurizing valve is mounted on a nitrogen pipeline connected with the upper part of the negative-pressure separation tank; a pressure regulating valve and a safety valve are mounted on an air return pipeline connected with the upper part of the negative-pressure separation tank; the negative pressure separation tank is connected with the negative pressure type evaporative cooler through a liquid inlet pipe; a liquid inlet valve is mounted on the liquid inlet pipe; a blow-down valve is mounted on a blow-down pipeline connected with the lower part of the negative pressure separation tank; a demister is mounted at the upper part of the negative-pressure separation tank; and the negative pressure separation tank cylinder is provided with a negative pressure separation tank pressure gauge, a negative pressure separation tank thermometer and a negative pressure separation tank liquid level meter.

Description

TECHNICAL FIELD

[0001] The utility model relates to the separation field of non-evaporative component of negative pressure type evaporation heat exchange equipment, in particular to a negative pressure type evaporation heat exchange equipment blowdown separation device. BACKGROUND

[0002] Ammonia refrigeration and other evaporation heat exchange technologies have been widely used in China. Especially in chemical production, technical personnel often use ammonia refrigeration and other evaporation heat exchange technologies to ensure the normal production of processes with low temperature requirements. In the operation process of the low-temperature methanol washing device, methanol needs to use ammonia cooler and other evaporation heat exchange equipment for cooling; in the air separation section, air separation chilled water also needs to use ammonia cooler and other evaporation heat exchange equipment for heat exchange. In the use process, the leakage of ammonia cooler and other evaporation heat exchange equipment tubes is inevitable, and the non-evaporative components such as methanol or water will accumulate at the bottom of the ammonia cooler and other evaporation heat exchange equipment after entering the equipment, which will reduce the heat exchange area of the ammonia cooler and other evaporation heat exchange equipment and reduce the heat exchange effect, and the production cannot be controlled. Especially when there are negative pressure ammonia coolers and other negative pressure evaporation heat exchange equipment in part of the process, the non-evaporative components accumulate in the negative pressure ammonia cooler and other negative pressure evaporation heat exchange equipment, which cannot be discharged by conventional means, which will further reduce the heat exchange effect of the negative pressure ammonia cooler and other negative pressure evaporation heat exchange equipment. It is necessary to seek a negative pressure evaporation heat exchange equipment blowdown separation device. SUMMARY

[0003] The utility model aims at providing a negative pressure evaporation heat exchange equipment blowdown separation device for separating the accumulated non-evaporative components in the negative pressure evaporation heat exchange equipment, ensuring the heat exchange effect of the negative pressure ammonia cooler and other negative pressure evaporation heat exchange equipment, avoiding the influence of the heat exchange effect of the negative pressure evaporation heat exchange equipment on the safe operation of the system. At the same time, the evaporable medium such as gas ammonia in the non-evaporative components is recovered back to the system, reducing waste.

[0004] The utility model discloses a purpose is realized like this: a negative pressure formula evaporative heat exchange equipment blowdown separation device is by negative pressure separation tank 1, heating coil 2, steam condensate drainage device 3, liquid inlet valve 4, blowdown valve 5, temperature regulating valve 6, pressurizing valve 7, pressure regulating valve 8, demister 9, negative pressure separation tank pressure gauge 10, negative pressure separation tank thermometer 11, negative pressure separation tank liquid level meter 12, safety valve 13 are formed, and the inside installation of negative pressure separation tank 1 has heating coil 2, and the heating steam pipeline of heating coil 2 import end connection installs temperature regulating valve 6, and heating coil 2 export end connects steam condensate drainage device 3;The pressurizing valve 7 of nitrogen pipeline is installed on the upper portion of negative pressure separation tank 1 connection;The pressure regulating valve 8 of return gas pipeline is installed on the upper portion of negative pressure separation tank 1 connection, and safety valve 13;Negative pressure separation tank 1 is connected with negative pressure formula evaporative heat exchange equipment through liquid inlet pipe, and is installed with liquid inlet valve 4 on liquid inlet pipe;The blowdown valve 5 of blowdown pipeline is installed on the lower portion of negative pressure separation tank 1 connection;Negative pressure separation tank 1 upper portion installs demister 9;The cylinder body of negative pressure separation tank 1 is installed with negative pressure separation tank pressure gauge 10, negative pressure separation tank thermometer 11, negative pressure separation tank liquid level meter 12.

[0005] Open temperature regulating valve 6, make heating steam enter heating coil 2 in negative pressure separation tank 1, after steam condensate drainage device 3 has condensed liquid flow, open pressure regulating valve 8, make negative pressure separation tank pressure gauge 10 pressure demonstration and negative pressure formula evaporative heat exchange equipment pressure flat, open negative pressure separation tank liquid inlet valve 4, utilize the difference, make the dirt of not evaporative component in negative pressure formula evaporative heat exchange equipment enter negative pressure separation tank 1 along liquid inlet pipe by gravity, after being heated in negative pressure separation tank 1, the evaporative medium such as ammonia generated by evaporation can return negative pressure formula evaporative heat exchange equipment outlet pipeline and be recycled, and not evaporative component gradually accumulates at the bottom of negative pressure separation tank 1.When negative pressure separation tank liquid level meter 12 shows liquid level 70%, control liquid inlet amount through liquid inlet valve 4 to make negative pressure separation tank liquid level meter 12 liquid level demonstration stable.When negative pressure separation tank thermometer 11 temperature demonstration gradually rises, close liquid inlet valve 4, close pressure regulating valve 8, open pressurizing valve 7 to negative pressure separation tank 1 and fill pressure, open blowdown valve 5 and not evaporative component is arranged to recycling device.

[0006] Preferably, the negative pressure formula evaporative heat exchange equipment blowdown separation device is installed below the negative pressure formula evaporative heat exchange equipment, so that the negative pressure formula evaporative heat exchange equipment and the negative pressure separation tank 1 generate a difference in height; the gas outlet on the upper portion of the negative pressure separation tank 1 is provided with a wire mesh demister 1 to remove the non-evaporative components entrained in the gas. The utility model has the remarkable effect of separating the non-evaporative components in the negative pressure formula evaporative heat exchange equipment, thereby ensuring the heat exchange effect of the negative pressure formula evaporative heat exchange equipment. BRIEF DESCRIPTION OF DRAWINGS

[0007] ATTACHED Figure 1 The connection schematic diagram of the utility model is shown.

[0008] ATTACHED Figure 1Marking description: Figure 1 1. negative pressure separation tank; 2. heating coil; 3. steam condensate drainage device; 4. liquid inlet valve; 5. blowdown valve; 6. temperature regulating valve; 7. pressurizing valve; 8. pressure regulating valve; 9. demister; 10. negative pressure separation tank pressure gauge; 11. negative pressure separation tank thermometer; 12. negative pressure separation tank liquid level gauge; 13. safety valve. DETAILED DESCRIPTION

[0009] The utility model will be further explained below in combination with the drawings. Figure 1 The utility model will be further explained below in combination with the drawings.

[0010] A negative pressure equipment blowdown separation device is composed of a negative pressure separation tank 1, a heating coil 2, a steam condensate drainage device 3, a liquid inlet valve 4, a blowdown valve 5, a temperature regulating valve 6, a pressurizing valve 7, a pressure regulating valve 8, a demister 9, a negative pressure separation tank pressure gauge 10, a negative pressure separation tank thermometer 11, a negative pressure separation tank liquid level gauge 12, and a safety valve 13. The heating coil 2 is installed inside the negative pressure separation tank 1. The heating steam pipeline connected to the inlet end of the heating coil 2 is provided with the temperature regulating valve 6, and the outlet end of the heating coil 2 is connected to the steam condensate drainage device 3. The nitrogen pipeline connected to the upper part of the negative pressure separation tank 1 is provided with the pressurizing valve 7. The gas return pipeline connected to the upper part of the negative pressure separation tank 1 is provided with the pressure regulating valve 8 and the safety valve 13. The negative pressure separation tank 1 is connected to the negative pressure evaporative cooler through a liquid inlet pipe, and the liquid inlet pipe is provided with the liquid inlet valve 4. The blowdown pipeline connected to the lower part of the negative pressure separation tank 1 is provided with the blowdown valve 5. The demister 9 is installed on the upper part of the negative pressure separation tank 1. The negative pressure separation tank 1 is provided with the negative pressure separation tank pressure gauge 10, the negative pressure separation tank thermometer 11, and the negative pressure separation tank liquid level gauge 12.

[0011] After the heating steam enters the heating coil 2 in the negative pressure separation tank 1 and the condensed liquid flows out of the steam condensate drainage device 3, the pressure regulating valve 8 is opened, the pressure reading of the negative pressure separation tank pressure gauge 10 is leveled with the pressure of the negative pressure evaporative heat exchange equipment, the liquid inlet valve 4 of the negative pressure separation tank is opened, and the difference in level is used to make the waste containing non-evaporated components in the negative pressure evaporative heat exchange equipment enter the negative pressure separation tank 1 along the liquid inlet pipe by gravity. After being heated in the negative pressure separation tank 1, the evaporated gas ammonia and other evaporable media return to the outlet pipeline of the negative pressure evaporative heat exchange equipment for recycling, and the non-evaporated components accumulate at the bottom of the negative pressure separation tank 1. When the liquid level gauge 12 shows that the liquid level is 70%, the liquid inlet amount is controlled through the liquid inlet valve 4 to stabilize the liquid level reading of the negative pressure separation tank liquid level gauge 12. When the temperature reading of the negative pressure separation tank thermometer 11 gradually rises, the liquid inlet valve 4 is closed, the pressure regulating valve 8 is closed, the pressurizing valve 7 is opened to charge the negative pressure separation tank 1, and the blowdown valve 5 is opened to discharge the non-evaporated components to the recycling device.

[0012] The utility model discloses the characteristics are simple structure, convenient operation, the effect is remarkable to the inside dirt separation recovery of negative pressure type evaporation heat exchange equipment, realizes the effective separation recovery of liquid ammonia and the non -evaporation component of evaporable medium, keeps negative pressure type evaporation heat exchange equipment long -term high -efficient operation.

Claims

1. A negative pressure evaporation heat exchange equipment blowdown separation device, characterized in that, The device is composed of a negative pressure separation tank (1), a heating coil (2), a steam condensate drainage device (3), an inlet valve (4), a blowdown valve (5), a temperature regulating valve (6), a pressurizing valve (7), a pressure regulating valve (8), a demister (9), a negative pressure separation tank pressure gauge (10), a negative pressure separation tank thermometer (11), a negative pressure separation tank liquid level gauge (12), and a safety valve (13). The heating coil (2) is installed inside the negative pressure separation tank (1). The heating steam pipeline connected to the inlet end of the heating coil (2) is provided with the temperature regulating valve (6). The outlet end of the heating coil (2) is connected to the steam condensate drainage device (3). The nitrogen pipeline connected to the upper part of the negative pressure separation tank (1) is provided with the pressurizing valve (7). The gas return pipeline connected to the upper part of the negative pressure separation tank (1) is provided with the pressure regulating valve (8) and the safety valve (13). The negative pressure separation tank (1) is connected to a negative pressure evaporation heat exchange device through an inlet pipe, which is provided with the inlet valve (4). The blowdown pipeline connected to the lower part of the negative pressure separation tank (1) is provided with the blowdown valve (5). The demister (9) is installed on the upper part of the negative pressure separation tank (1). The negative pressure separation tank (1) is provided with the negative pressure separation tank pressure gauge (10), the negative pressure separation tank thermometer (11), and the negative pressure separation tank liquid level gauge (12).

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