Dry quenching waste heat boiler deaerator dead steam recovery device

Abstract

The utility model relates to a dead steam recovery device for a deaerator of a dry quenching waste heat boiler, which belongs to the technical field of dry quenching waste heat recovery equipment and is used for recovering dead steam of the deaerator of the dry quenching waste heat boiler. According to the technical scheme, a recovery tank is an upright cylinder, a steam throttler is installed on the lower portion of a tank body of the recovery tank, an air inlet pipe of the steam throttler is connected with an exhaust port of a dead steam exhaust pipeline through the tank body wall of the recovery tank, and a plurality of parallel cooling water input pipes are horizontally installed on the upper portion of the tank body of the recovery tank. A plurality of cooling water nozzles are respectively mounted on the plurality of cooling water input pipes, water inlets of the plurality of cooling water input pipes are connected with a demineralized water output pipeline through the tank body wall of the recovery tank, and a condensed water discharge pipe is mounted at the lower part of the tank body of the recovery tank. The waste steam recovery device is simple in structure and convenient to use, waste steam of the deaerator of the dry quenching waste heat boiler can be condensed and recovered, condensate water is recovered into the desalting water tank to be reused, the problem of waste caused by direct discharge of the waste steam of the deaerator is solved, and the purposes of saving energy and reducing consumption are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a device for recycling the oxygen -removing device of dry quenching waste heat boiler exhaust steam belongs to dry quenching waste heat recovery equipment technical field. BACKGROUND

[0002] In the dry quenching waste heat recovery process, the dry quenching oxygen -removing device is used to remove the dissolved oxygen in the feedwater used by the dry quenching waste heat boiler. When removing the dissolved oxygen in the feedwater, the feedwater needs to be heated to 104 DEG C, and then the low-pressure steam of the oxygen-removing head of the oxygen-removing device is used to remove the dissolved oxygen in the feedwater. The low-pressure steam after removing the dissolved oxygen in the water is discharged through the exhaust pipe of the oxygen-removing device. The steam consumption of the oxygen-removing device is about 6-7t per hour. The discharge of these steams causes energy waste. Therefore, from the perspective of energy management, it is very necessary to develop a recovery device for the exhaust steam of the oxygen-removing device to save energy and reduce production cost. SUMMARY

[0003] The technical problem to be solved by the utility model is to provide a dry quenching waste heat boiler oxygen-removing device exhaust steam recovery device. The exhaust steam recovery device can recover and condense the exhaust steam, and the condensed water can be returned to the desalted water tank for reuse. The problem of direct discharge of the exhaust steam of the oxygen-removing device is solved, and the purpose of energy saving and consumption reduction is achieved.

[0004] The technical solution for solving the above technical problem is:

[0005] A dry quenching waste heat boiler oxygen-removing device exhaust steam recovery device, which comprises a recovery tank, a steam throttler, a cooling water input pipe, a cooling water spray head, and a condensed water discharge pipe. The recovery tank is a vertical cylindrical body. The steam throttler is installed in the lower part of the inner cavity of the tank body. The inlet pipe of the steam throttler is connected to the exhaust port of the exhaust steam pipeline through the tank body wall. Multiple cooling water input pipes are horizontally installed in the upper part of the inner cavity of the tank body. The multiple cooling water input pipes are parallel. Multiple cooling water spray heads are installed on the multiple cooling water input pipes. The inlet of the multiple cooling water input pipes is connected to the desalted water output pipeline through the tank body wall. The lower part of the tank body is provided with a condensed water discharge pipe.

[0006] The above-mentioned dry quenching waste heat boiler oxygen-removing device exhaust steam recovery device comprises three cooling water input pipes, which are arranged in parallel. Two three-ways are installed on each of the three cooling water input pipes. The spacing between the two three-ways on each of the three cooling water input pipes is different. The six three-ways on the three cooling water input pipes are staggered in the horizontal direction. A cooling water spray head is installed at the lower part of each three-way. The tail end of each three-way is sealed with a pipe cap.

[0007] The top surface of the recovery tank is provided with a steam exhaust pipe, the upper part of the side wall of the recovery tank is provided with a pressure gauge, the middle part of the side wall of the recovery tank is provided with a recovery tank manhole, the upper end of the recovery tank manhole is provided with a recovery tank manhole flange, the recovery tank manhole flange is connected with a recovery tank manhole cover, and the lower part of the tank body of the recovery tank is connected with a condensate water discharge pipe and a condensate water tank.

[0008] The utility model discloses the beneficial effects are:

[0009] The steam throttle device of the utility model introduces the steam into the recovery tank, the brine is sprayed through the cooling water spray head of the cooling water input pipe, the steam is condensed into condensate water after meeting the brine, the condensate water falls to the lower part of the recovery tank, the condensate water is collected and then enters the condensate water tank outside the recovery tank from the condensate water discharge pipe, and then enters the brine tank through the feed pump to complete the recycling.

[0010] The utility model discloses simple structure, convenient to use can condense the steam of dry quenching waste heat boiler deoxidizer and recover, and the condensate water is recycled in the brine tank, solves the problem of the direct discharge of the steam of deoxidizer, achieves the purpose of energy saving and consumption reduction. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the structure schematic diagram of the utility model;

[0012] Figure 2 It is Figure 1 The side view of;

[0013] Figure 3 It is the structure schematic diagram of steam throttle device;

[0014] Figure 4 It is the structure schematic diagram of cooling water input pipe.

[0015] Marked in the drawing as follows: recovery tank 1, steam throttle device 2, cooling water input pipe 3, three-way pipe 4, cooling water spray head 5, pipe cap 6, condensate water discharge pipe 7, steam exhaust pipe 8, pressure gauge 9, recovery tank manhole 10, recovery tank manhole flange 11, recovery tank manhole cover 12, fastening bolt 13, steam spray hole 14. DETAILED DESCRIPTION

[0016] The utility model discloses recovery tank 1, steam throttle device 2, cooling water input pipe 3, three-way pipe 4, cooling water spray head 5, pipe cap 6, condensate water discharge pipe 7, steam exhaust pipe 8, pressure gauge 9 are formed.

[0017] Figure 1 , 2As shown in the figure, the recovery tank 1 is a vertical cylinder, a steam exhaust pipe 8 is installed on the top surface of the recovery tank 1, a pressure gauge 9 is installed on the upper portion of the side wall of the recovery tank 1, a recovery tank manhole 10 is arranged in the middle portion of the side wall of the recovery tank 1, and a condensate water discharge pipe 7 is installed on the lower portion of the tank body of the recovery tank 1.

[0018] Figure 1 , 3 As shown in the figure, the steam throttle 2 is installed in the lower portion of the inner cavity of the tank body of the recovery tank 1, the steam inlet pipe of the steam throttle 2 is connected with the exhaust port of the steam exhaust pipe through the tank body wall of the recovery tank 1, and the steam throttle 2 introduces the exhaust steam into the recovery tank 1. The steam throttle 2 is a cylinder, the cylinder of the steam throttle 2 is horizontally arranged, a plurality of steam injection holes 14 are uniformly arranged on the outer wall of the steam throttle 2, and steam is injected into the cavity of the recovery tank 1 through the steam injection holes 14.

[0019] Figure 1 , 4 As shown in the figure, the cooling water input pipe 3 is horizontally installed on the upper portion of the inner cavity of the tank body of the recovery tank 1, the cooling water input pipe 3 is three, the three cooling water input pipes 3 are arranged in parallel, two three-way pipes 4 are respectively installed on the three cooling water input pipes 3, the spacing between the two three-way pipes 4 on the three cooling water input pipes 3 is different, the total six three-way pipes 4 on the three cooling water input pipes 3 are staggered in the horizontal direction, the cooling water injection head 5 is installed at the lower portion of each three-way pipe 4, and the tail end of the three cooling water input pipes 3 is sealed by a pipe cap 6. The water inlet of the cooling water input pipe 3 is connected with a desalted water output pipe through the tank body wall of the recovery tank 1, and the desalted water is sprayed through the cooling water injection head 5 of the cooling water input pipe 3.

[0020] The use process of the utility model is as follows:

[0021] During normal production, the valve is opened, the exhaust steam of the deaerator with pressure is introduced into the recovery tank 1 through the steam throttle 2, the exhaust steam is blown outward from the steam injection holes 14 of the steam throttle 2, the hot exhaust steam flows upward, the desalted water is introduced into the recovery tank 1 through the cooling water input pipe 3, the desalted water is sprayed downward through the cooling water injection head 5, the high-temperature exhaust steam is condensed into condensate water after meeting the desalted water, the condensate water falls to the lower portion of the recovery tank 1, the condensate water is collected and then enters the condensate water tank outside the recovery tank 1 through the condensate water discharge pipe 7, and then enters the desalted water tank through the feed water pump, so that the exhaust steam of the deaerator is recycled and reused, and the resource utilization efficiency is improved.

[0022] An embodiment of the utility model is as follows:

[0023] ​​The diameter of the recovery tank is 800 mm, the height is 2215 mm, and the thickness is 8 mm;

[0024] The diameter of the steam throttle 2 is 200 mm, the diameter of the steam injection hole 14 is 8 mm, and the distance between adjacent steam injection holes 14 is 40 mm;

[0025] The diameter of the cooling water input pipe 3 is 25 mm, and the length is 660 mm;

[0026] The diameter of the condensate discharge pipe 7 is 80 mm, and the length is 200 mm;

[0027] The diameter of the exhaust steam discharge pipe 8 is 80 mm, and the length is 596 mm;

[0028] The diameter of the recovery tank manhole 10 is 600 mm, and the thickness is 16 mm.

Claims

1. A waste steam recovery device for a dry quenching coke oven waste heat boiler deaerator, characterized in that: It includes a recovery tank (1), a steam throttle (2), a cooling water inlet pipe (3), a cooling water nozzle (5), and a condensate outlet pipe (7). The recovery tank (1) is an upright cylindrical body. The steam throttle (2) is installed in the lower part of the inner cavity of the recovery tank (1). The inlet pipe of the steam throttle (2) is connected to the exhaust port of the exhaust pipe of the exhaust steam through the tank wall of the recovery tank (1). Multiple cooling water inlet pipes (3) are installed horizontally in the upper part of the inner cavity of the recovery tank (1). The multiple cooling water inlet pipes (3) are parallel. Multiple cooling water nozzles (5) are installed on the multiple cooling water inlet pipes (3). The inlet of the multiple cooling water inlet pipes (3) is connected to the demineralized water output pipe through the tank wall of the recovery tank (1). A condensate outlet pipe (7) is installed in the lower part of the tank body of the recovery tank (1).

2. The waste steam recovery device for deaerator in a dry quenching waste heat boiler according to claim 1, characterized in that: The cooling water inlet pipe (3) consists of three pipes arranged in parallel vertically. Two tees (4) are installed on each of the three cooling water inlet pipes (3). The spacing between the two tees (4) on the three cooling water inlet pipes (3) is different from each other. The six tees (4) on the three cooling water inlet pipes (3) are arranged in a staggered manner in the horizontal direction. A cooling water nozzle (5) is installed at the bottom of each tee (4). The tail end of the three cooling water inlet pipes (3) is sealed with a pipe cap (6).

3. The waste steam recovery device for deaerator in a dry quenching waste heat boiler according to claim 1, characterized in that: The top surface of the recovery tank (1) is equipped with a waste steam vent pipe (8), the upper part of the side wall of the recovery tank (1) is equipped with a pressure gauge (9), the middle part of the side wall of the recovery tank (1) is equipped with a recovery tank manhole (10), the upper end of the recovery tank manhole (10) is equipped with a recovery tank manhole flange (11), the recovery tank manhole flange (11) is connected to the recovery tank manhole cover (12), and the condensate drain pipe (7) at the bottom of the tank body of the recovery tank (1) is connected to the condensate tank.

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