CN204372904U - The boiler deironing water supply part of steam utilization condensation water recovery system - Google Patents

Abstract

Boiler iron removal water supply part of steam utilization condensate recovery system, including boiler (100), deaerator (101), softened water station (102), regular blowdown expansion tank (103), first iron removal equipment (110) and The second iron removal equipment (111). The utility model forms a relatively complete closed cycle from the steam produced by the boiler until the steam is condensed into water and then recycled into the boiler. pollution to the environment.

Description

Boiler iron removal water supply part of steam utilization condensate recovery system

technical field

The utility model belongs to the technical field of cigarette production, and in particular relates to a boiler iron removal water supply part of a steam utilization condensate recovery system.

Background technique

Vacuum dampening, stem moistening, leaf moistening, flavoring and adding materials in the tobacco factory's silk workshop require a lot of steam to heat and humidify the leaves and shredded tobacco, and the process equipment produces a large amount of condensed water during the heating process. Silk workshops, silk storage rooms, and wrapping workshops have strict requirements on ambient temperature and humidity, and a large number of combined air-conditioning units are installed. The combined air-conditioning units use steam to raise the ambient temperature and produce a large amount of steam condensate. The steam inlet pipe also produces a large amount of condensed water due to heat dissipation during steam delivery. Due to the high temperature and purity of condensed water discharged from process equipment, combined air-conditioning units, and steam inlet pipes, direct discharge will affect the environment and cause waste of heat energy and water resources. If the condensed water is recovered, the pressure and temperature of the discharged condensed water are different due to the different steam pressures in the process equipment, combined air conditioner, and steam inlet pipe. In this way, when the condensed water is recovered, the high-pressure condensed water will hinder the normal discharge and discharge of the low-pressure condensed water. Recovery, and the traditional recovery method cannot completely recover the condensed water, or even if the condensed water is recovered, the flash steam generated by the condensed water is discharged, and the water or flash steam cannot be fully utilized.

Contents of the invention

In order to solve the deficiencies in the prior art, the utility model provides a boiler iron removal water supply system that can separately recover and recycle the condensed water discharged from the process equipment, combined air conditioner and steam inlet pipe. part.

In order to solve the above technical problems, the utility model adopts the following technical scheme: the boiler iron removal and water supply part of the steam utilization condensate recovery system includes a boiler 100, a deaerator 101, a softened water station 102, a regular blowdown expansion tank 103, a first Iron equipment 110 and the second iron removal equipment 111;

The water outlet of the demineralized water station 102 is connected with the water inlet of the deaerator 101 through the first water pipe 117, and the first water pump 36 and the first ball valve 37 are arranged successively along the water flow direction on the first water pipe 117, and the water outlet of the deaerator 101 The second water pipe 118 is connected to the water inlet of the boiler 100, and the second water pipe 118 is provided with a second water pump 33 and a second ball valve 34 in sequence along the water flow direction;

The outlet of the second iron removal equipment 111 is connected with the fourth recovery pipeline 125, and the fourth recovery pipeline 125 is provided with the first three-way electric valve 25 adjacent to the second iron removal equipment 111; the outlet of the first iron removal equipment 110 passes through the first The seven recovery pipeline 127 is connected with the inlet of the deaerator 101, and the seventh recovery pipeline 127 is provided with the second three-way electric valve 29 close to the first iron removal equipment 110 and the twelfth ball valve 41 close to the deaerator 101, and the twelfth ball valve 41 close to the deaerator 101. The outlet of the four recovery pipelines 125 is connected between the twelfth ball valve 41 and the second three-way electric valve 29 on the seventh recovery pipeline 127; the third of the first three-way electric valve 25 and the second three-way electric valve 29 The connection port is a sundry discharge port;

The miscellaneous discharge port of the boiler 100 is connected to the inlet of the regular blowdown expansion tank 103 through the eighth recovery pipeline 128 , and the eighth recovery pipeline 128 is provided with a first solenoid valve 35 .

The first water pipe 117 is connected with a backwash pipe 143 between the first water pump 36 and the first ball valve 37, and the outlet of the backwash pipe 143 is respectively connected to the upper part of the first iron removal equipment 110 and the second iron removal equipment 111, and the reverse The flushing pipe 143 is provided with a nineteenth ball valve 38 adjacent to the first water pipe 117 , a twentieth ball valve 42 adjacent to the first iron removal device 110 and an eighteenth ball valve 23 adjacent to the second iron removal device 111 .

The top of the regular blowdown expansion tank 103 is provided with a fourth emptying pipe 145, the fourth emptying pipe 145 is provided with a fourth emptying valve 32, the top of the regular blowdown expansion tank 103 is connected with an overflow pipe 30, and the regular blowdown expansion tank The bottom of 103 is provided with a third drain valve 31.

The bottoms of the first iron removal device 110 and the second iron removal device 111 are respectively provided with a fourth blowdown valve 26 and a fifth blowdown valve 22 .

Using the above technical solution, the steam utilization condensate recovery system also includes high-temperature process equipment 104, low-temperature process equipment 105, combined air conditioner 106, flash tank 107, high-pressure condensate recovery tank 108, and low-pressure condensate recovery tank 109;

The steam outlet of the boiler 100 is connected with a steam main inlet pipe 113, and the steam main inlet pipe 113 passes through the first steam inlet pipe 114, the second steam inlet pipe 115 and the third steam inlet pipe 116, and the high-temperature process equipment 104 and the low-temperature process equipment respectively. 105 is connected to the air inlet of the combined air conditioner 106, and the first steam inlet pipe 114, the second steam inlet pipe 115 and the third steam inlet pipe 116 are respectively provided with a first shut-off valve 3, a second shut-off valve 6 and a third shut-off valve The valve 8 and the low temperature process equipment 105 are connected to the first filter 51 in the flash tank 107 through the first recovery pipeline 119, and the outlet of the first filter 51 is connected to the first miscellaneous discharge pipe 122 extending out of the flash tank 107 , the first miscellaneous pipe 122 is provided with a fourth ball valve 53; the first recovery pipe 119 is provided with a first steam trap group 7 adjacent to the low-temperature process equipment 105 and a third ball valve 52 adjacent to the flash tank 107, and the main steam inlet A condensed water recovery pipe 120 is connected between the pipe 113 and the first recovery pipeline 119. The condensed water recovery pipe 120 is provided with a second steam trap group 1, and the outlet of the high-temperature process equipment 104 passes through a steam power drainage device and the first recovery pipeline 119. connect;

The outlet of the combined air conditioner 106 is connected with the second filter 17 in the low-pressure condensed water recovery tank 109 through the second recovery pipeline 121, and the second recovery pipeline 121 is provided with the third steam trap group 9 adjacent to the combined air conditioner 106 and the low-pressure condensate The fifth ball valve 16 of the water recovery tank 109, the outlet of the second filter 17 is connected with the second miscellaneous pipe 123 stretching out of the low-pressure condensed water recovery tank 109, the second miscellaneous pipe 123 is provided with the sixth ball valve 18, The outlet of the low-pressure condensed water recovery tank 109 is connected to the inlet of the second iron removal equipment 111 through the third recovery pipeline 124, and the third recovery pipeline 124 is provided with a third water pump 20 and a seventh ball valve 21;

The outlet of the flash tank 107 is connected to the third filter 45 in the high-pressure condensate recovery tank 108 through the fifth recovery pipeline 126, and the fifth recovery pipeline 126 is provided with the eighth ball valve 47 adjacent to the high-pressure condensate recovery tank 108 and the adjacent The sixth steam trap group 11 and the ninth ball valve 10 of the flash tank 107, the outlet of the third filter 45 is connected with the third miscellaneous pipe 137 stretching out of the high-pressure condensed water recovery tank 108, and the third miscellaneous pipe 137 is A tenth ball valve 12 is provided; the outlet of the high-pressure condensed water recovery tank 108 is connected to the inlet of the first iron removal equipment 110 through the sixth recovery pipeline 138, and the fourth water pump 44 and the eleventh ball valve 43 are arranged on the sixth recovery pipeline 138 .

The steam power drainage device comprises a first water collection tank 5, a steam power trap valve pump 112 and a second water collection tank 54, the outlet of the high temperature process equipment 104 is connected with the inlet of the first water collection tank 5 through the ninth recovery pipeline 129, the ninth The recovery pipeline 129 is provided with a fourth steam trap group 4, the first steam inlet pipe 114 and the second water collection tank 54 are connected through the first steam power pipe 130, and the first steam power pipe 130 is provided with a pressure reducing valve group 2 , the first steam power pipe 130 is connected with the steam power trap pump 112 through the second steam power pipe 131, the second steam power pipe 131 is located above the second sump 54, the water outlet of the second sump 54 is connected to the first The water inlets of the sump 5 are connected by the tenth recovery pipeline 132, the fifth steam trap group 57 is arranged on the tenth recovery pipeline 132, the water outlet of the first sump 5 and the water inlet of the steam power trap pump 112 pass through The eleventh recovery pipeline 133 is connected, the eleventh recovery pipeline 132 is provided with a thirteenth ball valve 58, the water outlet of the steam power trap pump 112 is connected with the first recovery pipeline 119 through the twelfth recovery pipeline 134, and the steam power drain A condensation balance pipe 135 is provided between the top of the valve pump 112 and the top of the first water collection tank 5 , and a fourteenth ball valve 56 is provided on the condensation balance pipe 135 .

The first recovery pipeline 119 is respectively connected to the fifth recovery pipeline 126 and the second recovery pipeline 121 through the thirteenth recovery pipeline 136, and the thirteenth recovery pipeline 136 is provided with a fifteenth ball valve 49 adjacent to the first recovery pipeline 119 And the sixteenth ball valve 13 adjacent to the second recovery pipeline 121 .

The top of the flash tank 107 is connected with the deaerator 101 through the fourteenth recovery pipeline 139, and the fourteenth recovery pipeline 139 is provided with a two-way electric valve 50 close to the flash tank 107 and a tenth valve close to the deaerator 101. Seven ball valves 40, the bottom of the high-pressure condensate recovery tank 108 is provided with a first drain valve 14, the top of the high-pressure condensate recovery tank 108 is provided with a first emptying pipe 140, and the first emptying pipe 140 is provided with a first emptying valve. Valve 46 , a second emptying pipe 141 is connected between the first emptying pipe 140 and the top of the flash tank 107 , and a second emptying valve 48 is provided on the second emptying pipe 141 .

A fifteenth recovery pipeline 142 is connected between the main steam inlet pipe 113 and the deaerator 117 , and a second solenoid valve 39 is provided on the fifteenth recovery pipeline 142 .

The bottom of the low-pressure condensed water recovery tank 109 is provided with a second drain valve 19, the top of the low-pressure condensed water recovery tank 109 is provided with a third emptying pipe 144, and the third emptying pipe 144 is provided with a third emptying valve 15 .

The working principle and working process of the steam utilization condensate recovery system are as follows:

The steam pressure generated by the boiler is about 1.0MPa. The steam generated by the boiler is transported to high-temperature process equipment, low-temperature process equipment, and combined air conditioners through the steam pipeline. Condensed water is generated, and the condensed water in the main steam inlet pipe is output through the second steam trap group, and the temperature of the output condensed water is above 100°C; the steam is sent to the high-temperature process equipment through the first steam inlet pipe, and the high-temperature process equipment is low-pressure steam Equipment, after the steam is reduced to below 0.5MPa by the pressure reducing valve attached to the high-temperature process equipment, the shredded tobacco is heated by the high-temperature process equipment and then condensed into condensed water, which is output through the fourth steam trap group, and the temperature of the output condensed water is above 100°C; The steam is transported to the low-temperature process equipment through the second steam inlet pipe. The low-temperature process equipment is high-pressure steam-using equipment. The 1.0MPa steam is directly heated in the low-temperature process equipment to condense into condensed water, which is output through the first steam trap group. The water temperature is above 100°C; the steam is sent to the combined air conditioner through the third steam inlet pipe and then depressurized to below 0.3MPa through the pressure reducing valve group. Traps output. Since the temperature of the condensed water output by the second steam trap group, the fourth steam trap group, and the first steam trap group is above 100°C, and the temperature of the condensate water output by the third steam trap group is below 60°C, the temperature and pressure of the two condensate water The difference is large. If it passes through the same recovery pipeline and condensate recovery device, high temperature and high pressure condensate will affect the discharge of low temperature and low pressure condensate. Therefore, the condensed water above 100°C (the condensed water produced by the main steam inlet pipe, high-temperature process equipment, and low-temperature process equipment) is recycled into a high-pressure condensate recovery device through a main condensate water pipe (the first recovery pipe), and the 60°C The following condensed water (condensed water of combined air conditioner) is recovered separately through another main condensed water pipe (second recovery pipe) into a low-pressure condensed water recovery device.

The high-temperature condensate pipes, that is, the pipes after the second steam trap group, the fourth steam trap group, and the first steam trap group, converge on a first recovery pipe, enter the flash tank through the third ball valve, and enter the flash tank through the third ball valve. Sixteen ball valves, the first exhaust valve, and the second exhaust valve are usually closed. After filtering through the first filter of the flash tank, it flows into the bottom of the flash tank. When the first filter is more dirty, the fourth ball valve can be opened to drain the dirt. A two-way electric valve is installed on the top of the flash tank. The control system sets the opening pressure of the two-way electric valve to 0.06MPa and the closing pressure to 0.03MPa. When the pressure in the flash tank is greater than 0.06 MPa, the two-way electric valve Automatically open, the flash steam generated by high temperature condensed water passes through the two-way electric valve, and then enters the deaerator through the seventeenth ball valve on the fourteenth recovery pipeline to heat the softened water of the deaerator, so that not only the flash steam generated by high temperature condensed water The steam is utilized, and the pressure of the flash tank is reduced through the two-way electric valve on the top, which also reduces the pressure in the flash tank and the condensate recovery pipeline, avoiding the impact of high pressure process equipment, low pressure process equipment and steam in the recovery system. Normal discharge of main inlet condensate. When the pressure of the flash tank and the condensate water system is lower than 0.03 MPa, the two-way electric valve is closed, so that the pressure in the flash tank can ensure that the condensate is pressed in through the ninth ball valve, the sixth steam trap group and the eighth ball valve. The high-pressure condensate recovery tank flows into the bottom of the high-pressure condensate recovery tank after being filtered by the third filter of the high-pressure condensate recovery tank. When the third filter has a lot of dirt, the tenth ball valve can be opened to drain the dirt, and there is a first drain valve at the bottom of the high-pressure condensate recovery tank. The first emptying valve and the second emptying valve are usually closed, and the fourth water pump is controlled according to the liquid level of the high-pressure condensate recovery tank. The condensed water at the bottom of the high-pressure condensed water recovery tank is transported to the iron removal equipment through the fourth water pump through the eleventh ball valve. After the first iron removal equipment removes iron ions and other impurities, the condensed water enters the second three-way electric valve. The second three-way electric valve is connected to the iron ion online monitor. When the iron ion concentration after iron removal reaches the specified concentration, the second three-way electric valve is closed downward and opened upward, and the condensed water passes through the second three-way electric valve. The twelfth ball valve enters the deaerator. When the concentration of iron ions in the condensed water after iron removal is still above the specified concentration, it cannot be recycled, the second three-way electric valve is opened downwards, and the upwards is closed. After the initial cooling in the expansion tank, it is discharged into the trench through the overflow pipe of the expansion tank for regular sewage discharge, and then discharged to the outdoor sewage cooling pool through the trench.

Although the temperature of condensed water produced by high-temperature process equipment is above 100°C, the high-temperature process equipment is low-pressure steam-consuming equipment, and the temperature and pressure of condensed water produced by the high-temperature process equipment are lower than those produced by the main steam inlet pipe and low-temperature process equipment. , so that the condensed water produced by the low-temperature process equipment and its connecting pipes may affect the normal discharge of condensed water from the high-temperature process equipment. Therefore, a set of steam-powered trap pumps should be installed behind the fourth steam trap group of high-temperature process equipment, and the steam-powered steam trap pumps are equivalent to steam traps without power. When the pressure of the condensed water after the fourth steam trap group is sufficient to overcome the back pressure of the condensed water main pipeline, the condensed water will be output directly against the back pressure through the steam power trap pump. When the condensed water pressure behind the fourth steam trap group cannot overcome the back pressure of the condensed water main pipeline for water delivery, as the condensed water level in the steam-powered steam trap pump increases, the internal interlock mechanism operates, and the steam is decompressed After the valve group is decompressed, it enters the steam power trap pump to pressurize the condensed water, so that the pressure of the condensed water rises to overcome the pipeline back pressure, and the condensed water in the steam power trap pump is discharged into the first recovery pipeline. Before the power steam enters the steam power trap pump, a second sump is installed on the power steam pipeline, so that the quality of power steam entering the steam power trap pump will be relatively high and avoid affecting water delivery. And the condensed water in the second sump flows into the first sump through the fifth steam trap group. The fourteenth ball valve and the installed pipe are the condensate balance pipe of the steam power trap pump. The condensate balance pipe is used to balance the pressure between the steam power trap pump and the condensed water at the front, and avoid the residual steam in the steam power trap pump. Affects forward condensate flow into the steam powered trap pump. The first water collecting tank also plays the role of balancing pressure and facilitating water delivery.

The steam-powered steam trap pump can also be connected in parallel with the fourth steam trap group according to the operation conditions of the high-temperature process equipment. The power pump delivers water, and the water delivery capacity increases. Even if the condensed water pressure generated by the high-temperature process equipment cannot overcome the pipeline back pressure and output from the fourth steam trap group, and the power steam is active, it can also be output through the steam power trap pump, and the water delivery capacity is also larger when the power steam is activated.

The first emptying valve and the second emptying valve near the high-pressure condensate recovery tank are usually closed. When the eighth ball valve on the top of the flash tank fails to open, or the steam in the main steam inlet pipe leaks into the condensate through the second steam trap group In the water recovery system, the eighth ball valve depressurizes slowly. When the internal pressure of the system is too high, the first and second exhaust valves can be opened to discharge part of the flash steam to the outside, and part of it can be recovered through the three-way eighth ball valve. Utilize and realize the rapid pressure relief condensate recovery system, so that the normal production of the workshop will not be affected due to the above reasons hindering the discharge of condensate.

The first emptying valve, the second emptying valve, and the fifteenth ball valve are usually closed, and the condensate recovery is a closed condensate recovery system. If the flash tank fails, the fifteenth ball valve can be opened, the third ball valve can be closed, and the first emptying valve can be opened. The pipelines converge to a thirteenth recovery pipeline. The condensed water does not enter the flash tank through the third ball valve, but directly flows into the high-pressure condensate recovery tank through the fifteenth ball valve and the eighth ball valve in sequence. The high-temperature flash steam passes through The first emptying valve directly discharges to the outside and becomes an open condensed water recovery system, so that even if the flash tank fails, it will not affect the condensed water recovery of the process equipment.

The condensed water temperature of the combined air conditioner is generally below 60°C, and the temperature and pressure are relatively low. If the same recovery pipe and recovery device are used for the high temperature and high pressure condensed water above 100°C, the high temperature condensed water will affect the normal discharge of the condensed water of the combined air conditioner. Therefore, the condensed water of the combined air conditioner enters the low-pressure condensed water recovery tank through the third steam trap group and the fifth ball valve, and flows into the bottom of the low-pressure condensed water recovery tank after passing through the second filter of the low-pressure condensed water recovery tank. When there is a lot of dirt, the sixth ball valve can be opened to drain the dirt. The condensed water in the low-pressure condensed water recovery tank is transported to the second iron removal equipment through the third water pump through the seventh ball valve. After the iron ions and other impurities are removed in the second iron removal equipment, the condensed water enters the first three-way electric valve. The first three-way electric valve is connected to the iron ion online monitor. When the iron ion concentration after iron removal reaches the specified concentration, the first three-way electric valve is closed downward and opened upward, and the condensed water passes through the first three-way electric valve. The twelfth ball valve enters the deaerator. When the concentration of iron ions in the condensed water is still above the specified concentration after iron removal, it cannot be recycled. The first three-way electric valve is opened downward and closed upward. The overflow pipe of the sewage expansion tank is discharged into the trench, and then discharged to the outdoor sewage cooling pool through the trench.

The third emptying valve on the top of the low-pressure condensate recovery tank is usually closed. The system is a closed condensate recovery system. When the steam enters the condensate recovery system and causes the pressure of the condensate recovery system to rise, the third emptying valve can be opened to turn the closed condensate recovery system into an open recovery system to quickly release the pressure in the system, thereby It does not affect the discharge of condensed water and the recovery of condensed water.

The sixteenth ball valve is usually closed. The sixteenth ball valve can make the high-temperature condensate recovery tank and the low-temperature condensate recovery tank serve as backups for each other. Just open the emptying valve on the top of the condensate recovery tank of one of the systems to turn it into an open recovery system. The systems can be used as backups for each other. When the high-pressure condensate recovery tank or the first iron removal equipment fails, the sixteenth ball valve can be opened, the eighth ball valve and the third ball valve can be closed, and the third emptying valve can be opened to recover low-temperature condensate and become an open recovery system , the high-temperature condensed water enters the low-pressure condensed water recovery tank directly from the thirteenth recovery pipeline through the fifteenth ball valve and the sixteenth ball valve in turn. Similarly, when the low-pressure condensate recovery tank or the second iron removal equipment fails, the first emptying valve is opened and the high-temperature condensate recovery becomes an open recovery system, and the low-pressure condensate enters the high-pressure system through the sixteenth ball valve and the eighth ball valve in turn. Condensate recovery tank.

If the control system detects that the pressure difference inside the iron removal equipment is large, it proves that there is a lot of dirt in the iron removal equipment. The first iron removal equipment and the second iron removal equipment need to be backwashed with demineralized water regularly. When the first iron removal equipment is backwashed, the softened water from the softened water station enters the first iron removal equipment through the first water pump through the 19th ball valve and the 20th ball valve in turn, and the backwashed water is discharged into the ditch through the fourth blowdown valve . When the second iron removal equipment backwashes, the softened water from the softening water station enters the second iron removal equipment through the first water pump through the 19th ball valve and the 18th ball valve in turn, and the backwashed water is discharged into the ditch through the fifth drain valve . If automatic control is required, only electric valves or pneumatic valves need to be installed.

The deaerator mainly provides the softened water after deaeration for the boiler. The deaerator is mainly heated by the steam of the boiler. The boiler steam is transported through the pipeline through the second solenoid valve to the deaerator, and the water in the deaerator is pressurized by the second water pump to provide makeup water for the boiler through the second ball valve. Therefore, flash steam is absorbed by the deaerator water to save energy.

The softened water in the demineralized water station is pressurized by the water pump and then supplied to the deaerator through the first ball valve. The water in the deaerator is pressurized by the second water pump and then supplied to the boiler through the second ball valve. The steam generated by the boiler is sent to the deaerator, high-temperature process equipment, low-temperature process equipment, combined air conditioner and other equipment through the main steam inlet pipe. After iron removal is qualified, it enters the deaerator, and then enters the boiler to generate steam. This forms a circulating steam condensate system. Boiler blowdown water and unqualified condensed water after iron removal enters the regular blowdown expansion tank, overflows into the drainage ditch after initial cooling in the blowdown expansion tank, and is discharged to the outdoor blowdown cooling pool through the trench.

To sum up, the steam uses the condensate recovery system to divide the high-temperature and low-temperature condensate into two systems for recovery. The recovery equipment can be used as backup for each other. When the condensate recovery system fails, the closed recovery system can be converted into an open system. The recovery system greatly improves the flexibility and reliability, and overcomes the problem of condensate recovery caused by the different temperature and pressure of the output condensate at different water delivery points. Since the utility model forms a relatively complete closed cycle from the steam output from the boiler to the steam condensed into water and then recycled into the boiler, the recovery and utilization rate of the heat, water and flash steam of the condensed water is greatly improved, which not only saves resources but also Reduced environmental pollution.

Description of drawings

Figure 1 is a schematic structural diagram of a steam utilization condensate recovery system.

Detailed ways

As shown in Figure 1, the steam utilization condensate recovery system includes a boiler 100, a deaerator 101, a softened water station 102, a periodic blowdown expansion tank 103, high-temperature process equipment 104, low-temperature process equipment 105, combined air conditioner 106, and a flash tank 107. High pressure condensate recovery tank 108, low pressure condensate recovery tank 109, first iron removal equipment 110 and second iron removal equipment 111;

The water outlet of the demineralized water station 102 is connected with the water inlet of the deaerator 101 through the first water pipe 117, and the first water pump 36 and the first ball valve 37 are arranged successively along the water flow direction on the first water pipe 117, and the water outlet of the deaerator 101 The second water pipe 118 is connected to the water inlet of the boiler 100, and the second water pipe 118 is provided with a second water pump 33 and a second ball valve 34 in sequence along the water flow direction;

The steam outlet of the boiler 100 is connected with a steam main inlet pipe 113, and the steam main inlet pipe 113 passes through the first steam inlet pipe 114, the second steam inlet pipe 115 and the third steam inlet pipe 116, and the high-temperature process equipment 104 and the low-temperature process equipment respectively. 105 is connected to the air inlet of the combined air conditioner 106, and the first steam inlet pipe 114, the second steam inlet pipe 115 and the third steam inlet pipe 116 are respectively provided with a first shut-off valve 3, a second shut-off valve 6 and a third shut-off valve The valve 8 and the low temperature process equipment 105 are connected to the first filter 51 in the flash tank 107 through the first recovery pipeline 119, and the outlet of the first filter 51 is connected to the first miscellaneous discharge pipe 122 extending out of the flash tank 107 , the first miscellaneous pipe 122 is provided with a fourth ball valve 53; the first recovery pipe 119 is provided with the first steam trap group 7 adjacent to the low temperature process equipment 105 and the third third ball valve 52 adjacent to the flash tank 107, steam A condensed water recovery pipe 120 is connected between the main inlet pipe 113 and the first recovery pipe 119. The condensed water recovery pipe 120 is provided with a second steam trap group 1, and the outlet of the high-temperature process equipment 104 is connected to the first water recovery pipe through a steam-powered water trap. Pipeline 119 connection;

The outlet of the combined air conditioner 106 is connected with the second filter 17 in the low-pressure condensed water recovery tank 109 through the second recovery pipeline 121, and the second recovery pipeline 121 is provided with the third steam trap group 9 adjacent to the combined air conditioner 106 and the low-pressure condensate The fifth ball valve 16 of the water recovery tank 109, the outlet of the second filter 17 is connected with the second miscellaneous pipe 123 stretching out of the low-pressure condensed water recovery tank 109, the second miscellaneous pipe 123 is provided with the sixth ball valve 18, The outlet of the low-pressure condensed water recovery tank 109 is connected with the inlet of the second iron removal equipment 111 through the third recovery pipeline 124, the third recovery pipeline 124 is provided with the third water pump 20 and the seventh ball valve 21, the second iron removal equipment 111 The outlet is connected with a fourth recovery pipeline 125, and the fourth recovery pipeline 125 is provided with a first three-way electric valve 25 adjacent to the second iron removal equipment 111;

The outlet of the flash tank 107 is connected to the third filter 45 in the high-pressure condensate recovery tank 108 through the fifth recovery pipeline 126, and the fifth recovery pipeline 126 is provided with the eighth ball valve 47 adjacent to the high-pressure condensate recovery tank 108 and the adjacent The sixth steam trap group 11 and the ninth ball valve 10 of the flash tank 107, the outlet of the third filter 45 is connected with the third miscellaneous pipe 137 stretching out of the high-pressure condensed water recovery tank 108, and the third miscellaneous pipe 137 is A tenth ball valve 12 is provided; the outlet of the high-pressure condensed water recovery tank 108 is connected to the inlet of the first iron removal equipment 110 through the sixth recovery pipeline 138, and the fourth water pump 44 and the eleventh ball valve 43 are arranged on the sixth recovery pipeline 138 , the outlet of the first iron removal equipment 110 is connected with the inlet of the deaerator 101 through the seventh recovery pipeline 127, and the seventh recovery pipeline 127 is provided with the second three-way electric valve 29 adjacent to the first iron removal equipment 110 and the adjacent deaerator The twelfth ball valve 41 of oxygenator 101, the outlet of the fourth recovery pipeline 125 is connected between the twelfth ball valve 41 on the seventh recovery pipeline 127 and the second three-way electric valve 29; the first three-way electric valve 25 and The third connecting port of the second three-way electric valve 29 is a debris discharge port;

The miscellaneous discharge port of the boiler 100 is connected to the inlet of the regular blowdown expansion tank 103 through the eighth recovery pipeline 128 , and the eighth recovery pipeline 128 is provided with a first solenoid valve 35 .

The steam power drainage device comprises a first sump 5, a steam power trap pump 55 and a second sump 54, the outlet of the high temperature process equipment 104 is connected with the inlet of the first sump 5 through the ninth recovery pipeline 129, and the ninth recovery pipeline 129 is provided with a fourth steam trap group 4, the first steam inlet pipe 114 and the second sump 54 are connected through the first steam power pipe 130, the first steam power pipe 130 is provided with a pressure reducing valve group 2, and the first steam power pipe 130 is provided with a pressure reducing valve group 2. A steam power pipe 130 is connected with the steam power trap pump 55 through a second steam power pipe 131, the second steam power pipe 131 is located above the second water collection tank 54, and the water outlet of the second water collection tank 54 is connected to the first water collection tank The water inlets of 5 are connected through the tenth recovery pipeline 132, and the fifth steam trap group 57 is arranged on the tenth recovery pipeline 132, and the water outlet of the first sump 5 and the water inlet of the steam power trap pump 55 pass through the tenth recovery pipeline 132. A recovery pipeline 133 is connected, the eleventh recovery pipeline 132 is provided with a thirteenth ball valve 58, the water outlet of the steam power trap pump 55 is connected with the first recovery pipeline 119 through the twelfth recovery pipeline 134, and the steam power trap pump A condensate balance pipe 135 is provided between the top of 55 and the top of the first water collecting tank 5 , and a fourteenth ball valve 56 is provided on the condensate balance pipe 135 .

The first recovery pipeline 119 is respectively connected with the fifth recovery pipeline 126 and the second recovery pipeline 121 through the thirteenth recovery pipeline 136. The thirteenth recovery pipeline 136 is provided with a fifteenth ball valve 49 adjacent to the first recovery pipeline 119 and adjacent The sixteenth ball valve 13 of the second recovery pipeline 121 .

The top of the flash tank 107 is connected to the deaerator 101 through the fourteenth recovery pipeline 139, and the fourteenth recovery pipeline 139 is provided with a two-way electric valve 50 adjacent to the flash tank 107 and a seventeenth ball valve adjacent to the deaerator 101 40. The bottom of the high-pressure condensate recovery tank 108 is provided with a first drain valve 14, the top of the high-pressure condensate recovery tank 108 is provided with a first emptying pipe 140, and the first emptying pipe 140 is provided with a first emptying valve 46 A second emptying pipe 141 is connected between the first emptying pipe 140 and the top of the flash tank 107 , and a second emptying valve 48 is provided on the second emptying pipe 141 .

The first water pipe 117 is connected with a backwash pipe 143 between the first water pump 36 and the first ball valve 37, and the outlet of the backwash pipe 143 is respectively connected with the first iron removal equipment 110 and the second iron removal equipment 111 top, and the backwash pipe 143 is provided with a nineteenth ball valve 38 adjacent to the first water pipe 117 , a twentieth ball valve 42 adjacent to the first iron removal equipment 110 and an eighteenth ball valve 23 adjacent to the second iron removal equipment 111 .

A fifteenth recovery pipeline 142 is connected between the main steam inlet pipe 113 and the deaerator 117 , and a second electromagnetic valve 39 is provided on the fifteenth recovery pipeline 142 .

The bottom of the low-pressure condensed water recovery tank 109 is provided with a second drain valve 19 , and the top of the low-pressure condensed water recovery tank 109 is provided with a third emptying pipe 144 , and a third emptying valve 15 is provided on the third emptying pipe 144 .

The top of the regular blowdown expansion tank 103 is provided with a fourth emptying pipe 145, the fourth emptying pipe 145 is provided with a fourth emptying valve 32, the top of the regular blowdown expansion tank 103 is connected with an overflow pipe 30, and the bottom of the regular blowdown expansion tank 103 is A third drain valve 31 is provided.

Working principle and working process of the present utility model are as follows:

The pressure of the steam generated by the boiler is about 1.0 MPa. The steam generated by the boiler is transported to the high-temperature process equipment 104, the low-temperature process equipment 105, and the combined air conditioner 106 through the steam pipeline. Longer, heat dissipation will produce condensed water, the condensed water in the main steam inlet pipe 113 is output through the second steam trap group 1, and the temperature of the output condensed water is above 100°C; the steam is transported to high-temperature process equipment through the first steam inlet pipe 114 104. The high-temperature process equipment 104 is low-pressure steam-using equipment. After the steam is depressurized to below 0.5 MPa by the pressure-reducing valve attached to the high-temperature process equipment 104, the shredded tobacco is heated by the high-temperature process equipment 104 and then condensed into condensed water, which passes through the fourth steam trap group 4 output, the temperature of the output condensed water is above 100°C; the steam is transported to the low-temperature process equipment 105 through the second steam inlet pipe 115, and the low-temperature process equipment 105 is high-pressure steam equipment, and the steam of 1.0 MPa is directly heated in the low-temperature process equipment 105 After the shredded tobacco is condensed into condensed water, it is output through the first steam trap group 7, and the temperature of the output condensed water is above 100°C; the steam passes through the third steam inlet pipe 116, and then the pressure is reduced to below 0.3MPa by the pressure reducing valve group, and then sent to the combined air conditioner 106 After the air is heated in the combined air conditioner 106, the condensed water condensed to below 60° C. is output through the third steam trap group 9 . Since the temperature of the condensed water output by the second steam trap group 1, the fourth steam trap group 4, and the first steam trap group 7 is above 100°C, and the temperature of the condensed water output by the third steam trap group 9 is below 60°C, the two condensate The water temperature and pressure are quite different. If it passes through the same recovery pipeline and condensate recovery device, the high temperature and high pressure condensate will affect the discharge of low temperature and low pressure condensate. Therefore, the condensed water above 100°C (the condensed water produced by the steam main inlet pipe 113, the high-temperature process equipment 104, and the low-temperature process equipment 105) is recycled into a high-pressure condensed water recovery through a main condensed water pipeline (the first recovery pipeline 119) device, the condensed water below 60°C (the condensed water of the combined air conditioner 106) is recovered separately through another main condensed water pipeline (the second recovery pipeline 121) into a low-pressure condensed water recovery device.

The high-temperature condensed water pipelines, that is, the pipelines after the second steam trap group 1, the fourth steam trap group 4, and the first steam trap group 7 converge on a first recovery pipeline 119, and enter the flash tank 107 through the third ball valve 52, The fifteenth ball valve 49, the sixteenth ball valve 13, the first emptying valve 46, and the second emptying valve 48 are normally closed. After being filtered by the first filter 51 of the flash tank 107, it flows into the bottom of the flash tank 107. When the first filter 51 is more dirty, the fourth ball valve 53 can be opened to drain the dirt. A two-way electric valve 50 is installed on the top of the flash tank 107, and the control system sets the opening pressure of the two-way electric valve 50 to 0.06 MPa, and the closing pressure is set to 0.03 MPa. When the pressure in the flash tank 107 is greater than 0.06 MPa, The two-way electric valve 50 is automatically opened, and the flash steam generated by the high-temperature condensed water passes through the two-way electric valve 50, and then enters the deaerator 101 through the seventeenth ball valve 40 on the fourteenth recovery pipeline 139 to heat the softening of the deaerator 101 In this way, not only the flash steam produced by high-temperature condensed water can be utilized, but also the pressure of the flash tank 107 can be reduced through the top two-way electric valve 50, which reduces the pressure in the flash tank 107 and the condensate recovery pipeline, avoiding the recovery system The lame pressure affects the normal discharge of condensed water from the high-pressure process equipment 104, the low-pressure process equipment 105, and the main steam inlet pipe 113. When the pressure of the flash tank 107 and the condensed water system was lower than 0.03 MPa, the two-way electric valve 50 was closed, so that the pressure in the flash tank 107 could ensure that the condensed water would pass through the ninth ball valve 10, the sixth drain valve group 11, The eighth ball valve 47 is pressed into the high-pressure condensate recovery tank 108 , and flows into the bottom of the high-pressure condensate recovery tank 108 after being filtered by the third filter 45 of the high-pressure condensate recovery tank 108 . When the third filter 45 is more dirty, the tenth ball valve 12 can be opened to drain the dirt, and there is a first drain valve 14 at the bottom of the high-pressure condensed water recovery tank 108 . The first emptying valve 46 and the second emptying valve 48 are usually closed, and the fourth water pump 44 is controlled according to the liquid level of the high-pressure condensed water recovery tank 108 . The condensed water at the bottom of the high-pressure condensed water recovery tank 108 is transported to the iron removal equipment 1 through the fourth water pump 44 through the eleventh ball valve 43, and the condensed water enters the second tee after removing iron ions and other impurities in the first iron removal equipment 110 Electric valve 29. The second three-way electric valve 29 is connected to the iron ion online monitor. When the iron ion concentration after iron removal reaches the specified concentration, the second three-way electric valve 29 is closed downward and opened upward, and the condensed water passes through the second three-way electric valve. The valve 29 enters the deaerator 101 through the twelfth ball valve 41 . When the concentration of iron ions in the condensed water is still above the specified concentration after iron removal, and cannot be recycled, the second three-way electric valve 29 is opened downward and closed upward, and the condensed water enters the expansion tank 103 for periodic blowdown of the boiler through the second three-way electric valve 29. After preliminary cooling in the regular blowdown expansion tank 103, it is discharged into the sewer through the overflow pipe 30 of the regular blowdown expansion tank 103, and then discharged to the outdoor blowdown cooling pool through the trench.

Although the temperature of the condensed water produced by the high-temperature process equipment 104 is above 100°C, the high-temperature process equipment 104 is a low-pressure steam-using equipment, and the temperature and pressure of the condensed water produced are higher than those produced by the main steam inlet pipe 113 and the low-temperature process equipment 105. The temperature and pressure are low, so the condensed water produced by the low-temperature process equipment 105 and its connecting pipes may affect the normal discharge of condensed water from the high-temperature process equipment 104 . Therefore, a set of steam-powered trap pump 55 is installed behind the fourth steam trap group 4 of the high-temperature process equipment 104, and the steam-powered steam trap pump 55 is equivalent to a steam trap without power. When the pressure of the condensed water after the fourth steam trap group 4 is sufficient to overcome the back pressure of the condensed water main pipeline for water delivery, the condensed water is directly outputted through the steam-powered trap pump 55 against the back pressure. When the condensed water pressure behind the fourth steam trap group 4 cannot overcome the back pressure of the condensed water main pipeline to deliver water, as the condensed water level in the steam-powered trap pump 55 rises, the internal interlock mechanism operates, and the steam passes through After the pressure reducing valve group 2 is decompressed, it enters the steam power trap pump 55 to pressurize the condensed water, so that the pressure of the condensed water rises to overcome the pipeline back pressure, and the condensed water in the steam power trap pump 55 is discharged into the first recovery pipeline 119 . Before the power steam enters the steam power trap pump 55, a second sump 54 is installed on the power steam pipeline, so that the quality of power steam entering the steam power trap pump 55 will be relatively high and avoid affecting water delivery. The condensed water in the second water collecting tank 54 flows into the first water collecting tank 5 through the fifth steam trap group 57 . The fourteenth ball valve 56 and the installed pipeline are the condensation balance pipe 135 of the steam power trap pump 55. The condensation balance pipe is used to balance the pressure between the inside of the steam power trap pump 55 and the condensed water at the front to avoid the steam power trap pump The residual steam in the pump 55 affects the flow of the condensed water in the front part into the steam-powered trap pump 55 . The first water collecting tank 5 also plays the role of balancing pressure and facilitating water delivery.

The steam-powered steam trap pump 55 can also be connected in parallel with the fourth steam trap group 4 according to the operating conditions of the high-temperature process equipment 104. The valve group 4 and the steam power pump deliver water, and the water delivery capacity increases. Even if the condensed water pressure generated by the high-temperature process equipment 104 cannot overcome the pipeline back pressure and output from the fourth steam trap group 4, and the power steam is active, it can also be output through the steam power steam trap pump 55, and the water delivery capacity is also reduced when the power steam is activated. larger.

The first evacuation valve 46 and the second evacuation valve 48 near the high-pressure condensate recovery tank 108 are usually closed. When the eighth ball valve 47 on the top of the flash tank 107 fails to open, or the steam in the main steam inlet pipe 113 passes through the first The second steam trap group 1 leaks into the condensate recovery system, and the eighth ball valve 47 decompresses slowly. When the internal pressure of the system is too high, the first emptying valve 46 and the second emptying valve 48 can be opened to discharge part of the flash steam. Into the outdoors, part of it is recycled through the eighth three-way ball valve 47 to realize a rapid pressure relief condensate recovery system, so that the normal production of the workshop will not be affected by the obstruction of condensate discharge due to the above reasons.

The first emptying valve 46, the second emptying valve 48, and the fifteenth ball valve 49 are usually closed, and the condensed water recovery is a closed condensed water recovery system. If the flash tank 107 breaks down, the fifteenth ball valve 49 can be opened, the third ball valve 52 is closed, the first emptying valve 46 is opened, and the high-temperature condensed water pipeline is the second steam trap group 1, the fourth steam trap group 4, The pipeline behind the first steam trap group 7 converges on a thirteenth recovery pipeline 136, and the condensed water does not enter the flash tank 107 through the third ball valve 52, but directly passes through the fifteenth ball valve 49 and the eighth ball valve 47 in sequence. Flowing into the high-pressure condensate recovery tank 108, the high-temperature flash steam is directly discharged outdoors through the first emptying valve 46, turning into an open condensate recovery system, so that even if the flash tank 107 fails, it will not affect the condensate recovery of the process equipment.

The temperature of the condensed water of the combined air conditioner 106 is generally below 60°C, and the temperature and pressure are low. If the same recovery pipe and recovery device are used for the high temperature and high pressure condensed water above 100°C, the high temperature condensed water will affect the normal operation of the condensed water of the combined air conditioner 106. emission. Therefore, the condensed water of the combined air conditioner 106 enters the low-pressure condensed water recovery tank 109 through the third steam trap group 9 and the fifth ball valve 16, and flows into the low-pressure condensed water recovery tank 109 after passing through the second filter 17 of the low-pressure condensed water recovery tank 109 At the bottom, when the second filter 17 is more dirty, the sixth ball valve 18 can be opened to drain the dirt. The condensed water in the low-pressure condensed water recovery tank 109 is transported to the second iron removal equipment 111 through the third water pump 20 through the seventh ball valve 21, and the condensed water enters the first iron removal equipment 111 after iron ions and other impurities are removed in the second iron removal equipment 111. Three-way electric valve 25. The first three-way electric valve 25 is connected to the iron ion online monitor. When the iron ion concentration after iron removal reaches the specified concentration, the first three-way electric valve 25 is closed downward and opened upward, and the condensed water passes through the first three-way electric The valve 25 enters the deaerator 101 through the twelfth ball valve 41 . When the concentration of iron ions in the condensed water is still above the specified concentration after iron removal, and cannot be recycled, the first three-way electric valve 25 is opened downward and closed upward, and the condensed water enters the expansion tank 103 for periodic blowdown of the boiler through the first three-way electric valve 25, Then it is discharged into the trench through the overflow pipe 30 of the boiler blowdown expansion tank, and then discharged to the outdoor blowdown cooling pool through the trench.

The third emptying valve 15 on the top of the low-pressure condensate recovery tank 109 is usually closed, and the system is a closed condensate recovery system. The through valve allows steam to enter the condensed water recovery system, and when the pressure of the condensed water recovery system rises, the third emptying valve 15 can be opened to turn the closed condensed water recovery system into an open recovery system, and the pressure in the system can be rapidly reduced. Released, so as not to affect the discharge of condensed water and the recovery of condensed water.

The sixteenth ball valve 13 is usually closed, and the sixteenth ball valve 13 can make the high-temperature condensed water recovery tank 108 and the low-temperature condensed water recovery tank 109 mutually standby, as long as the emptying valve on the top of the condensed water recovery tank of one of the systems is opened, the Forming an open recovery system can be used as a backup for each other. When the high-pressure condensed water recovery tank 108 or the first iron removal equipment 110 fails, the sixteenth ball valve 13 can be opened, the eighth ball valve 47 and the third ball valve 52 can be closed, and the third emptying valve 15 can be opened to recover low-temperature condensed water It becomes an open recovery system, and the high-temperature condensed water enters the low-pressure condensed water recovery tank 109 directly from the thirteenth recovery pipeline 136 through the fifteenth ball valve 49 and the sixteenth ball valve 13 in sequence. Similarly, when the low-pressure condensed water recovery tank 109 or the second iron removal equipment 111 fails, the first emptying valve 46 is opened to recover the high-temperature condensed water into an open recovery system, and the low-pressure condensed water passes through the sixteenth ball valve 13 and the first The eight-ball valve 47 enters the high-pressure condensed water recovery tank 108 .

If the control system detects that the pressure difference inside the iron removal equipment is large, it proves that the iron removal equipment is dirty, and the first iron removal equipment 110 and the second iron removal equipment 111 need to be regularly backwashed with demineralized water. When the first iron removal equipment 110 is backwashed, the demineralized water in the softened water station 102 enters the first iron removal equipment 110 through the first water pump 36 through the nineteenth ball valve 38 and the twentieth ball valve 42 in turn, and the backwashed water passes through the first water pump 36. Four drain valves 26 are discharged into the sewer. When the second iron removal equipment 111 is backwashed, the demineralized water from the softened water station 102 enters the second iron removal equipment 111 through the first water pump 36 through the nineteenth ball valve 38 and the eighteenth ball valve 23 in turn, and the backwashed water passes through the first water pump 36. Five blowdown valves 22 are discharged into the sewer. If automatic control is required, only electric valves or pneumatic valves need to be installed.

The deaerator 101 mainly provides deoxidized demineralized water for the boiler. The deaerator 101 deoxidizes mainly by the steam heating of the boiler 100 . The steam from the boiler 100 is transported through the pipeline to the deaerator 101 through the second solenoid valve 39 , and the water in the deaerator 101 is pressurized by the second water pump 33 and then supplied to the boiler 100 through the second ball valve 34 to make up water. Therefore, the absorption of the flash steam by the water in the deaerator 101 can save energy.

The demineralized water in the demineralized water station 102 is pressurized by the water pump 36 and then supplied to the deaerator 101 through the first ball valve 37 , and the water in the deaerator 101 is pressurized by the second water pump 33 and then supplied to the boiler 100 through the second ball valve 34 . The steam generated by the boiler 100 is sent to the deaerator 101, high temperature process equipment 104, low temperature process equipment 105, combined air conditioner 106 and other equipment through the steam main inlet pipe 113, and the condensed water generated by the above equipment and pipelines is recycled into the condensed water through the steam trap group Recovery equipment, the condensed water enters the deaerator 101 after passing iron removal, and then enters the boiler 100 to generate steam. This forms a circulating steam condensate system. Unqualified condensed water from the boiler 100 after blowdown and iron removal enters the regular blowdown expansion tank 103, overflows into the drainage ditch after initial cooling in the blowdown expansion tank, and is discharged to the outdoor blowdown cooling pool through the trench.

The above embodiments are only used to illustrate and not limit the technical solutions of the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that the present utility model can still be modified or equivalently replaced. Any modification or partial replacement without departing from the spirit and scope of the present utility model shall fall within the scope of the claims of the present utility model.

Claims (4)

1. The boiler iron removal water supply part of the steam utilization condensate recovery system is characterized in that it includes a boiler (100), a deaerator (101), a softened water station (102), a regular blowdown expansion tank (103), the first Iron equipment (110) and the second iron removal equipment (111); The water outlet of the softened water station (102) is connected to the water inlet of the deaerator (101) through the first water pipe (117), and the first water pump (36) and the first water pump (36) and the first The ball valve (37), the water outlet of the deaerator (101) is connected to the water inlet of the boiler (100) through the second water pipe (118), and the second water pump (33) is arranged in sequence along the water flow direction on the second water pipe (118) and the second ball valve (34); The outlet of the second iron removal equipment (111) is connected with a fourth recovery pipeline (125), and the fourth recovery pipeline (125) is provided with a first three-way electric valve (25) adjacent to the second iron removal equipment (111); The outlet of the first iron removal equipment (110) is connected to the inlet of the deaerator (101) through the seventh recovery pipeline (127), and the seventh recovery pipeline (127) is provided with the first iron removal equipment (110) Two-way three-way electric valve (29) and the twelfth ball valve (41) near the deaerator (101), the outlet of the fourth recovery pipeline (125) is connected to the twelfth ball valve ( 41) and the second three-way electric valve (29); the third connection port of the first three-way electric valve (25) and the second three-way electric valve (29) is the debris discharge port; The miscellaneous outlet of the boiler (100) is connected to the inlet of the regular blowdown expansion tank (103) through the eighth recovery pipeline (128), and the eighth recovery pipeline (128) is provided with a first electromagnetic valve (35). 2. The boiler iron removal water supply part of the steam utilization condensate recovery system according to claim 1, characterized in that: the first water pipe (117) is between the first water pump (36) and the first ball valve (37) A backwash pipe (143) is connected, and the outlet of the backwash pipe (143) is respectively connected to the upper part of the first iron removal equipment (110) and the second iron removal equipment (111). The nineteenth ball valve (38) of a water pipe (117), the twentieth ball valve (42) near the first iron removal device (110) and the eighteenth ball valve (23) near the second iron removal device (111). 3. The boiler iron removal and water supply part of the steam utilization condensate recovery system according to claim 1 or 2, characterized in that: the top of the regular blowdown expansion tank (103) is provided with a fourth emptying pipe (145). The fourth emptying valve (32) is installed on the four emptying pipes (145), the overflow pipe (30) is connected to the upper part of the regular blowdown expansion tank (103), and the third blowdown valve is set at the bottom of the regular blowdown expansion tank (103) (31). 4. The boiler iron removal and water supply part of the steam utilization condensate recovery system according to claim 1 or 2, characterized in that: the bottoms of the first iron removal equipment (110) and the second iron removal equipment (111) are respectively A fourth blowdown valve (26) and a fifth blowdown valve (22) are provided.