Energy-saving device for recycling condensate of Claus furnace

Abstract

An energy-saving device for recycling condensate of a Claus furnace comprises a boiler water replenishing port, a steam reboiler, the Claus furnace and a waste heat boiler, a boiler water replenishing pipeline is arranged on the boiler water replenishing port, and the other end of the boiler water replenishing pipeline is connected to a water replenishing port of the steam reboiler. A connecting pipeline is arranged at the bottom of the steam reboiler and connected with a waste heat boiler on the Claus furnace, a combustion chamber acid gas inlet is formed in the portion, on one side of the Claus furnace, of the combustion chamber, an acid gas inlet pipeline is connected to the combustion chamber acid gas inlet, and the other end of the acid gas inlet pipeline is connected with an acid gas opening. A combustion chamber gas inlet is formed in one side of the combustion chamber and connected with a gas pipeline, and the other end of the gas pipeline is connected with a gas opening. The device can efficiently and safely recover condensate, saves energy, improves the safety of the production process, improves the combustion efficiency of acid gas, and reduces the production cost.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical equipment, in particular to an energy-saving device for recycling condensate of a Claus furnace. Background Art

[0002] At present, the Claus furnace uses air booster to supply air and acid gas for combustion to generate sulfur dioxide, and the generated sulfur dioxide reacts with hydrogen sulfide to produce sulfur. In this production process, the condensate generated by the liquid sulfur jacket heating is recycled through the condensate tank. Due to the high temperature of the condensate, it cannot be completely recycled. Part of the steam condensate is released and sprayed out through the condensate tank, posing a risk of scalding. In order to solve the problem of condensate recovery, cooling water heat exchangers or air cooling islands are usually used for cooling and recovery. However, the above solutions make the air cooling equipment run continuously, increasing power consumption; cooling water heat exchangers cause heat energy waste; and the Claus furnace supply air temperature is low, which is not conducive to the acid gas combustion reaction.

[0003] Therefore, there is an urgent need for an energy-saving device for recycling condensate from a Claus furnace, which can efficiently and safely recycle condensate, save energy, increase the safety of the production process, improve the combustion efficiency of acid gas, and reduce production costs. Summary of the invention

[0004] A Claus furnace condensate recycling and energy-saving device can efficiently and safely recycle condensate, save energy, increase the safety of the production process, improve the acid gas combustion efficiency, and reduce production costs.

[0005] A Claus furnace condensate recovery and energy-saving device comprises a boiler water supply port, a steam reboiler, a Claus furnace and a waste heat boiler, wherein:

[0006] A boiler water supply pipe is provided on the boiler water supply port, and the other end of the boiler water supply pipe is connected to the steam reboiler water supply port. A connecting pipe is provided at the bottom of the steam reboiler to be connected to the waste heat boiler on the Claus furnace. A combustion chamber on one side of the Claus furnace is provided with a combustion chamber acid gas inlet, and the combustion chamber acid gas inlet is connected to an acid gas inlet pipe, and the other end of the acid gas inlet pipe is connected to the acid gas port. A combustion chamber coal gas inlet is provided on one side of the combustion chamber, and the combustion chamber coal gas inlet is connected to a coal gas pipe, and the other end of the gas pipe is connected to the coal gas port.

[0007] A steam outlet is provided on one side of the top of the waste heat boiler, and a connecting pipe on the steam outlet is connected to a steam reboiler. A reboiler gas outlet is provided on the steam reboiler, and the reboiler gas outlet is connected to a steam condensation pipe. The other end of the steam condensation pipe is connected to one side of the top of the steam plate heat exchanger. A condensate recovery pipe is provided at the bottom of the steam plate heat exchanger, and the other end of the condensate recovery pipe is connected to a condensate tank.

[0008] An air inlet is provided on the other side of the top of the steam plate heat exchanger, and a connecting pipe on the air inlet is connected to the air port. A heating air supply pipeline is provided at the bottom of the steam plate heat exchanger, and a power pump is provided on the heating air supply pipeline. The other end of the heating air supply pipeline is connected to the bottom of the Claus furnace and the combustion chamber in sequence.

[0009] Preferably, a waste gas outlet is provided on one side of the top of the waste heat boiler, the waste gas outlet is connected to a waste gas pipe, and the other end of the waste gas pipe is connected to a waste gas recovery system.

[0010] Preferably, one end of the steam condensation pipe is connected to a steam condensate replenishing pipe, and the other end of the steam condensate replenishing pipe is connected to the condensate external interface.

[0011] Preferably, one end of the condensate tank is connected to a condensate recovery pipeline, and the other end of the condensate recovery pipeline is connected to a recovery water system.

[0012] Preferably, a plurality of control valves are provided on the boiler water supply pipeline, acid gas inlet pipeline, gas pipeline, steam condensation pipeline, condensate recovery pipeline, heating air supply pipeline, steam condensate supplement pipeline and condensate recovery pipeline.

[0013] Beneficial effects of the utility model:

[0014] The utility model discloses an energy-saving device for recycling condensate of a Claus furnace. The device can effectively utilize the waste heat generated by the Claus furnace and convert it into usable energy, thereby reducing energy waste. A steam plate heat exchanger is used to exchange heat with the steam in the steam condensation pipe, so that the steam temperature is reduced to facilitate the recovery of the condensate. At the same time, the temperature of the steam heats the air entering from the air inlet. After heat exchange, the air distribution temperature increases, thereby improving the combustion efficiency of the Claus furnace. By recycling the condensate, the demand for water resources in the production process can be reduced, which is beneficial to the conservation and protection of water resources and further realizes the recycling of resources. The device not only helps to reduce production costs and improve economic benefits, but also reduces pollution and pressure on the environment, improves equipment utilization and reduces production costs, greatly enhancing its practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a schematic diagram of an energy-saving device for recycling condensate of a Claus furnace.

[0016] In the figure: boiler water supply port 1, boiler water supply pipeline 2, steam reboiler 3, steam reboiler water supply port 4, Claus furnace 5, waste heat boiler 6, combustion chamber 7, combustion chamber acid gas inlet 8, acid gas inlet pipeline 9, acid gas port 10, combustion chamber coal gas inlet 11, coal gas pipeline 12, coal gas port 13, steam outlet 14, reboiler outlet 15, steam condensation pipeline 16, steam plate heat exchanger 17, condensate recovery pipeline 18, condensate tank 19, air inlet 20, air port 21, heating air supply pipeline 22, power pump 23, exhaust gas outlet 24, exhaust gas pipeline 25, exhaust gas pipeline 25, exhaust gas recovery system 26, steam condensate replenishment pipeline 27, condensate external interface 28, condensate recovery pipeline 29, and recovery water system 30. DETAILED DESCRIPTION

[0017] In order to make the technical solution of the present utility model easier to understand, the technical solution of the present utility model is now clearly and completely described in the form of specific embodiments in combination with the accompanying drawings.

[0018] Embodiment 1:

[0019] like Figure 1 As shown, in this embodiment Figure 1 The utility model is a Claus furnace condensate recovery and energy-saving device, comprising a boiler water supply port 1, a steam reboiler 3, a Claus furnace 5 and a waste heat boiler 6, wherein:

[0020] The boiler water supply port 1 is provided with a boiler water supply pipe 2, the other end of the boiler water supply pipe 2 is connected to the steam reboiler water supply port 4, the bottom of the steam reboiler 3 is provided with a connecting pipe connected to the waste heat boiler 6 on the Claus furnace 5, a combustion chamber 7 on one side of the Claus furnace 5 is provided with a combustion chamber acid gas inlet 8, the combustion chamber acid gas inlet 8 is connected to an acid gas inlet pipe 9, the other end of the acid gas inlet pipe 9 is connected to the acid gas port 10, a combustion chamber coal gas inlet 11 is provided on one side of the combustion chamber 7, the combustion chamber coal gas inlet 11 is connected to a coal gas pipe 12, the other end of the coal gas pipe 12 is connected to a coal gas port 13;

[0021] A steam outlet 14 is provided on one side of the top of the waste heat boiler 6, and a connecting pipe on the steam outlet 14 is connected to the steam reboiler 3. A reboiler gas outlet 15 is provided on the steam reboiler 3, and the reboiler gas outlet 15 is connected to a steam condensation pipe 16. The other end of the steam condensation pipe 16 is connected to one side of the top of a steam plate heat exchanger 17. A condensate recovery pipe 18 is provided at the bottom of the steam plate heat exchanger 17, and the other end of the condensate recovery pipe 18 is connected to a condensate tank 19.

[0022] An air inlet 20 is provided on the other side of the top of the steam plate heat exchanger 17, and a connecting pipe on the air inlet 20 is connected to an air port 21. A heating air supply pipeline 22 is provided at the bottom of the steam plate heat exchanger 17, and a power pump 23 is provided on the heating air supply pipeline 22. The other end of the heating air supply pipeline 22 is connected to the bottom of the Claus furnace 5 and the combustion chamber 7 in sequence.

[0023] A waste gas outlet 24 is provided on one side of the top of the waste heat boiler 6 , and a waste gas pipe 25 is connected to the waste gas outlet 24 , and the other end of the waste gas pipe 25 is connected to a waste gas recovery system 26 .

[0024] The steam condensation pipeline 16 is connected to a steam condensate replenishing pipeline 27 at one end, and the other end of the steam condensate replenishing pipeline 27 is connected to a condensate external interface 28 .

[0025] One end of the condensate tank 19 is connected to a condensate recovery pipe 29 , and the other end of the condensate recovery pipe 29 is connected to a recovery water system 30 .

[0026] The boiler water supply pipeline 2, acid gas intake pipeline 9, coal gas pipeline 12, steam condensation pipeline 16, condensate recovery pipeline 18, heating air supply pipeline 22, steam condensate supplement pipeline 27 and condensate recovery pipeline 29 are all provided with a plurality of control valves.

[0027] During the production process of the device, the water from the boiler water supply port 1 enters the steam reboiler 3 for reboiling, and the steam generated after the water enters the reboiler outlet 15 from the steam outlet 14, and finally enters the steam plate heat exchanger 17 through the steam condensation pipe 16. The steam entering through the steam condensation pipe 16 still carries heat. At this time, the air enters the air inlet 20 on the steam plate heat exchanger 17. The air is heated by the heat on the steam and enters the Claus furnace 5 and the combustion chamber 7. After heat exchange, the air distribution temperature increases, which is conducive to the acid gas reaction in the Claus furnace. The steam plate heat exchanger 17 forms condensed water after the steam is cooled by heat exchange, enters the condensate tank 19 through the condensate recovery pipe 18 for storage, and flows to the recovery water system 30 for recycling and reuse.

[0028] It should be noted that the embodiments described herein are only partial embodiments of the present invention, rather than all implementations of the present invention, and the embodiments are only exemplary, and their role is only to provide a more intuitive and clear way to understand the content of the present invention, rather than to limit the technical solutions described in the present invention. Without departing from the concept of the present invention, all other implementation methods that ordinary technicians in the field can think of without creative work, and other simple replacements and various changes to the technical solutions of the present invention, all belong to the protection scope of the present invention.

Claims

1. A Claus furnace condensate recovery and energy-saving device, characterized in that: It comprises a boiler water supply port (1), a steam reboiler (3), a Claus furnace (5) and a waste heat boiler (6), wherein: The boiler water supply port (1) is provided with a boiler water supply pipe (2), the other end of which is connected to the steam reboiler water supply port (4), the bottom of the steam reboiler (3) is provided with a connecting pipe connected to the waste heat boiler (6) on the Claus furnace (5), the combustion chamber (7) on one side of the Claus furnace (5) is provided with a combustion chamber acid gas inlet (8), the combustion chamber acid gas inlet (8) is connected to an acid gas inlet pipe (9), the other end of which is connected to the acid gas port (10), the combustion chamber (7) is provided with a combustion chamber coal gas inlet (11), the combustion chamber coal gas inlet (11) is connected to a coal gas pipe (12), the other end of which is connected to the coal gas port (13); A steam outlet (14) is provided on one side of the top of the waste heat boiler (6), a connecting pipe on the steam outlet (14) is connected to a steam reboiler (3), a reboiler gas outlet (15) is provided on the steam reboiler (3), the reboiler gas outlet (15) is connected to a steam condensation pipe (16), the other end of the steam condensation pipe (16) is connected to one side of the top of a steam plate heat exchanger (17), a condensate recovery pipe (18) is provided at the bottom of the steam plate heat exchanger (17), the other end of the condensate recovery pipe (18) is connected to a condensate tank (19); An air inlet (20) is provided on the other side of the top of the steam plate heat exchanger (17), and a connecting pipe on the air inlet (20) is connected to an air port (21). A heating air supply pipeline (22) is provided at the bottom of the steam plate heat exchanger (17), and a power pump (23) is provided on the heating air supply pipeline (22). The other end of the heating air supply pipeline (22) is connected to the bottom of the Claus furnace (5) and the combustion chamber (7) in sequence.

2. The Claus furnace condensate recovery and energy-saving device according to claim 1, characterized in that: A waste gas outlet (24) is provided on one side of the top of the waste heat boiler (6), and a waste gas pipe (25) is connected to the waste gas outlet (24), and the other end of the waste gas pipe (25) is connected to a waste gas recovery system (26).

3. The Claus furnace condensate recovery and energy-saving device according to claim 1, characterized in that: One end of the steam condensation pipe (16) is connected to a steam condensate replenishing pipe (27), and the other end of the steam condensate replenishing pipe (27) is connected to a condensate external interface (28).

4. The Claus furnace condensate recovery and energy-saving device according to claim 1, characterized in that: One end of the condensate tank (19) is connected to a condensate recovery pipe (29), and the other end of the condensate recovery pipe (29) is connected to a recovery water system (30).

5. The Claus furnace condensate recovery and energy-saving device according to claim 1, characterized in that: A plurality of control valves are provided on the boiler water supply pipeline (2), the acid gas inlet pipeline (9), the coal gas pipeline (12), the steam condensation pipeline (16), the condensate recovery pipeline (18), the heating air supply pipeline (22), the steam condensate supplement pipeline (27) and the condensate recovery pipeline (29).

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