Petrochemical industry three-waste incineration treatment waste heat utilization boiler

Abstract

The utility model discloses a petrochemical industry three-waste incineration treatment waste heat utilization boiler. Comprising a steel frame support, an inspection hole, a flue gas inlet, a left diaphragm type wall, an ascending pipe, a pressure gauge, a steam pocket, a water level gauge, a right diaphragm type wall, a flue gas outlet, a middle diaphragm type wall, a mechanical vibration ash remover, an annular header, an ash falling hopper, an ash discharging device, a safety valve, a main steam valve, an auxiliary steam valve, a first platform, a descending pipe, a second platform, a first escalator and a second escalator. According to the utility model, a novel diaphragm type wall structure is adopted, the heating area is effectively increased, heat energy in flue gas can be more fully transferred to a working medium, the heat exchange efficiency is improved, and the wear-resistant and corrosion-resistant layer is sprayed on the heated heat exchange pipe in the diaphragm type wall, so that the corrosion resistance and wear resistance of the pipeline are enhanced, the service life of equipment is prolonged, and the service life of the equipment is prolonged. Due to the unique diaphragm type wall design, the stability of the structure is also improved, and the collapse problem caused by high temperature and vibration is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of incineration treatment of three chemical wastes, in particular to a boiler for utilizing waste heat from incineration treatment of three petrochemical wastes. Background Art

[0002] Crude oil is a viscous dark brown liquid composed of different hydrocarbons. It is refined through catalysis and cracking to obtain light oil and various gaseous substances, such as ethylene and other beneficial substances. However, during the oil refining process, some substances such as sulfur and alkaline substances will be produced. Harmful substances, including solid and liquid substances and oil slurry and oil residue, need to be treated, usually by incineration. At the same time, the beneficial substances are recycled. At the same time, in order to improve the recycling rate during the incineration process, waste heat boilers are normally configured to effectively recycle waste heat.

[0003] Existing waste heat boilers all use water pipe or smoke pipe design structures. However, since the waste from petroleum refining contains a large amount of sticky harmful substances, the waste heat boilers are often prone to collapse and corrosion, affecting the overall operating efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a boiler for utilizing waste heat from incineration of petrochemical waste, waste gas and waste oil, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a petrochemical three waste incineration treatment waste heat utilization boiler, including a steel frame support, the steel frame support is fixedly connected to a left diaphragm wall, a right diaphragm wall and a middle diaphragm wall, a flue gas inlet is provided on one side outer wall of the left diaphragm wall, a flue gas outlet is provided on one side outer wall of the right diaphragm wall, downcomers are fixedly connected to the inner walls of the left diaphragm wall and the right diaphragm wall, and the downcomers are conductively connected to the upcomers.

[0006] As a further technical solution of the present invention, a first platform is fixedly connected to the steel frame support, a steam drum is fixedly connected to the upper surface of the first platform, and the riser is conductively connected to the steam drum.

[0007] As a further technical solution of the present invention, a pressure gauge and a water level gauge are fixedly connected to the steam drum.

[0008] As a further technical solution of the present invention, a safety valve, a main steam valve and an auxiliary steam valve are fixedly connected to the output pipe of the steam drum.

[0009] As a further technical solution of the present invention, a second platform is provided at the bottom end of the first platform, and the second platform is fixedly connected to the steel frame bracket, a second escalator is fixedly connected to the second platform, and the second escalator is fixedly connected to the first platform, a first escalator is provided on one side of the second escalator, and the first escalator is fixedly connected to the first platform and the second platform.

[0010] As a further technical solution of the present invention, the lower surface of the middle diaphragm wall is connected to an annular collecting box, and mechanical vibration cleaners are fixedly connected to the outer walls on both sides of the annular collecting box. A dust hopper is provided at the bottom end of the annular collecting box, and the dust hopper is fixedly connected to the steel frame bracket, and an dust discharger is provided on the output port of the dust hopper.

[0011] As a further technical solution of the present invention, an inspection hole is provided on one side outer wall of the annular header.

[0012] Compared with the existing technology, the beneficial effects achieved by the present invention are: the present invention is designed with a new type of spacer membrane wall structure, which effectively increases the heating area, so that the heat energy in the flue gas can be more fully transferred to the working medium, thereby improving the heat exchange efficiency, and the heat exchange tubes inside the membrane wall are sprayed with a wear-resistant and anti-corrosion layer, which enhances the corrosion resistance and wear resistance of the pipeline and extends the service life of the equipment. The unique spacer membrane wall design also increases the stability of the structure and prevents collapse problems caused by high temperature and vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 This is a front view structural diagram of the utility model;

[0015] Figure 2 It is a side structural schematic diagram of the utility model.

[0016] In the figure: 1. Steel frame support; 2. Inspection hole; 3. Flue gas inlet; 4. Left diaphragm wall; 5. Riser; 6. Pressure gauge; 7. Steam drum; 8. Water level gauge; 9. Right diaphragm wall; 10. Flue gas outlet; 11. Middle diaphragm wall; 12. Mechanical vibration ash cleaner; 13. Annular header; 14. Ash hopper; 15. Ash discharger; 16. Safety valve; 17. Main steam valve; 18. Auxiliary steam valve; 19. First platform; 20. Downcomer; 21. Second platform; 22. First escalator; 23. Second escalator. DETAILED DESCRIPTION

[0017] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Please see the attached Figure 1 -Attached Figure 2The utility model provides an embodiment: a petrochemical three waste incineration treatment waste heat utilization boiler, including a steel frame support 1, the steel frame support 1 is fixedly connected to a left diaphragm wall 4, a right diaphragm wall 9 and a middle diaphragm wall 11, a flue gas inlet 3 is provided on one side outer wall of the left diaphragm wall 4, a flue gas outlet 10 is provided on one side outer wall of the right diaphragm wall 9, the inner walls of the left diaphragm wall 4 and the right diaphragm wall 9 are fixedly connected with a downpipe 20, and the downpipe 20 is conductively connected to the uppipe 5; the steel frame support 1 is fixedly connected to a first platform 19, the first platform 1 The upper surface of 9 is fixedly connected to the drum 7, and the riser 5 is conductively connected to the drum 7; the drum 7 is fixedly connected to a pressure gauge 6 and a water level gauge 8, which are used to monitor the real-time pressure and water level in the drum 7. The drum 7 is used to receive the steam-water mixture from the riser 5 and perform steam-water separation; the output pipe of the drum 7 is fixedly connected to a safety valve 16, a main steam valve 17 and an auxiliary steam valve 18. The safety valve 16 serves as a safety protection device. When the pressure in the drum 7 exceeds the set value, it automatically opens to release excess steam; the bottom end of the first platform 19 is provided with a second platform 21. The second platform 21 is fixedly connected to the steel frame support 1, and the second escalator 23 is fixedly connected to the second platform 21, and the second escalator 23 is fixedly connected to the first platform 19. A first escalator 22 is provided on one side of the second escalator 23, and the first escalator 22 is fixedly connected to the first platform 19 and the second platform 21. The first platform 19, the second platform 21, the first escalator 22 and the second escalator 23 are used by staff for daily inspection and maintenance operations; the lower surface of the middle diaphragm wall 11 is conductively connected to the annular header 13, and the outer walls on both sides of the annular header 13 are fixedly connected to mechanical vibration The ash cleaner 12 and the bottom end of the annular collecting box 13 are provided with an ash hopper 14, and the ash hopper 14 is fixedly connected to the steel frame support 1, and the output port of the ash hopper 14 is provided with an ash discharger 15. The annular collecting box 13 is used to collect and distribute the water entering the riser 5 to ensure the continuous heat exchange process. The mechanical vibration ash cleaner 12 is used to regularly clean the membrane wall to prevent dust accumulation from affecting the heat exchange efficiency, and collect and discharge the dust through the ash hopper 14 and the ash discharger 15; an inspection hole 2 is provided on the outer wall of one side of the annular collecting box 13, and the inspection hole 2 is used for maintenance personnel to perform internal inspection and maintenance.

[0019] Working principle: When using the present invention to utilize the waste heat from the incineration of three wastes, first connect the flue gas inlet 3 with the exhaust port of the three petrochemical wastes to be treated, and the flue gas enters the flue gas channel and heat exchange area formed by the left diaphragm wall 4, the right diaphragm wall 9 and the middle diaphragm wall 11 on the steel frame support 1. As the flue gas flows, the riser 5 absorbs the heat in the flue gas, causing the water in the tube to evaporate into steam, and the steam rises to the steam drum 7 at the top of the membrane wall. At the same time, the downcomer 20 sends part of the condensed water or unevaporated water in the steam drum 7 back to the bottom of the boiler for recycling. The steam drum 7 is located on the first platform 19 on the top of the membrane wall, collects and separates steam and water, and the steam is output through the main steam valve 17 and the auxiliary steam valve 18 for subsequent utilization, while the water flows back through the downcomer 20. The waste flue gas is discharged from the flue gas outlet 10 after heat exchange. In the process, the annular header 13 collects and distributes the water entering the riser 5 to ensure the continuous heat exchange process. During use, the mechanical vibration cleaner 1 is used 2. The membrane wall is cleaned regularly to prevent dust accumulation from affecting heat exchange efficiency. Ash is collected and discharged through the ash hopper 14 and ash discharger 15. A magnetic flap remote water level control system is used to monitor and control the water level in the drum 7 in real time to ensure that the water level fluctuates within a safe range and prevent dry burning or flooding. The pressure in the boiler is automatically adjusted according to the operating procedures to ensure that the pressure is stable and within a safe range. The safety valve 16 serves as a safety protection device. When the pressure in the drum 7 exceeds the set value, it automatically opens to release excess steam. A denitrification nozzle device is installed in the middle of the left and right membrane walls to inject denitrification agent into the flue gas to reduce the nitrogen oxide content in the flue gas and meet environmental protection requirements. The pressure gauge 6 and water level gauge 8 display the pressure and water level status in the drum 7 in real time for operators to monitor. The inspection hole 2 is used by maintenance personnel to conduct internal inspections and maintenance. The first platform 19, the second platform 21, the first escalator 22 and the second escalator 23 are used by staff for daily inspections and maintenance work.

Claims

1. A waste heat utilization boiler for incineration of petrochemical waste, waste gas and waste oil, comprising a steel frame support (1), characterized in that: The steel frame support (1) is fixedly connected to a left diaphragm wall (4), a right diaphragm wall (9) and a middle diaphragm wall (11); a smoke inlet (3) is provided on one side outer wall of the left diaphragm wall (4); a smoke outlet (10) is provided on one side outer wall of the right diaphragm wall (9); a downpipe (20) is fixedly connected to the inner walls of the left diaphragm wall (4) and the right diaphragm wall (9); and an uppipe (5) is conductively connected to the downpipe (20).

2. The waste heat utilization boiler for incineration of petrochemical wastes according to claim 1, characterized in that: A first platform (19) is fixedly connected to the steel frame bracket (1), a steam drum (7) is fixedly connected to the upper surface of the first platform (19), and the rising pipe (5) is conductively connected to the steam drum (7).

3. The waste heat utilization boiler for incineration of petrochemical wastes according to claim 2, characterized in that: A pressure gauge (6) and a water level gauge (8) are fixedly connected to the steam drum (7).

4. The waste heat utilization boiler for incineration of petrochemical wastes according to claim 2, characterized in that: A safety valve (16), a main steam valve (17) and an auxiliary steam valve (18) are fixedly connected to the output pipe of the steam drum (7).

5. The waste heat utilization boiler for incineration of petrochemical wastes according to claim 2, characterized in that: A second platform (21) is provided at the bottom end of the first platform (19), and the second platform (21) is fixedly connected to the steel frame bracket (1); a second escalator (23) is fixedly connected to the second platform (21), and the second escalator (23) is fixedly connected to the first platform (19); a first escalator (22) is provided on one side of the second escalator (23), and the first escalator (22) is fixedly connected to the first platform (19) and the second platform (21).

6. The waste heat utilization boiler for incineration of petrochemical wastes according to claim 1, characterized in that: The lower surface of the middle diaphragm wall (11) is conductively connected to an annular collecting box (13), and mechanical vibration dust collectors (12) are fixedly connected to the outer walls of both sides of the annular collecting box (13). An ash hopper (14) is provided at the bottom end of the annular collecting box (13), and the ash hopper (14) is fixedly connected to the steel frame support (1), and an ash discharger (15) is provided at the output port of the ash hopper (14).

7. The waste heat utilization boiler for incineration of petrochemical wastes according to claim 6, characterized in that: An inspection hole (2) is provided on one side outer wall of the annular header (13).

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