High-concentration hydrochloric acid loading acid mist recovery system
By designing a sealing flange and exhaust gas recovery system, the problem of waste gas dissipation during hydrochloric acid loading is solved, and the safety and environmental protection of hydrochloric acid loading process is improved, avoiding equipment corrosion and exhaust gas exhaust.
Patent Information
- Application Number
- CN202422653899.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2034-10-31
AI Technical Summary
During the loading process of hydrochloric acid, the inside of the tank body is dissipated due to the open flange of the tank, causing corrosion of surrounding equipment and facilities, posing safety hazards and environmental protection problems.
A high-concentration hydrochloric acid loading acid mist recovery system is designed, and a sealing flange, acid-resistant metal hose, waste gas recycling and treatment fiberglass tank and stirring device are used to form a closed loading environment. The waste gas is transported to the fiberglass tank through the exhaust gas pipeline for acid-base neutralization reaction, and a stirring device is used to prevent crystallization and precipitation, realizing the recycling and treatment of waste gas.
The closed recycling of the hydrochloric acid loading process is achieved, which avoids equipment corrosion and environmental protection problems, prevents direct discharge of acid-containing waste gas, and reduces safety hazards and environmental protection risks.
Smart Images
Figure CN223304156U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of hydrochloric acid storage and transportation technology, and particularly relates to an acid mist recovery system for loading high-concentration hydrochloric acid. Background Art
[0002] The production and shipment of hydrochloric acid are crucial components of chemical production. Loading platforms are often used, with acid-resistant pipes such as CPVC extending into the tanker container flanges for transport and loading. However, during loading, the exposed flanges of the tankers allow large amounts of acid-containing waste gas to escape from the tanks, causing prolonged corrosion of surrounding equipment and facilities, posing a safety hazard. Furthermore, with increasing emphasis on environmental protection in chemical production in recent years, the recovery of acid mist during the loading of high-concentration hydrochloric acid is crucial.
[0003] Therefore, it is necessary to design a high-concentration hydrochloric acid loading acid mist recovery system to better recover and treat the waste gas generated during the high-concentration hydrochloric acid loading process. Utility Model Content
[0004] In response to the problems of the existing technology, the purpose of this utility model is to provide a high-concentration hydrochloric acid loading acid mist recovery system to solve the problem that during the loading process, due to the open flange of the tank truck, a large amount of acid-containing waste gas escapes from the tank body, causing long-term corrosion of surrounding equipment and facilities, posing a safety hazard.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A high-concentration hydrochloric acid loading acid mist recovery system includes a hydrochloric acid tank truck, a sealing flange is provided on the top of the hydrochloric acid tank truck, two acid-resistant metal hoses are connected to the sealing flange, one of the acid-resistant metal hoses is connected to an exhaust gas pipeline, the other end of the exhaust gas pipeline is connected to an exhaust gas recovery and treatment fiberglass reinforced plastic tank, a stirring device is provided inside the exhaust gas recovery and treatment fiberglass reinforced plastic tank, an alkali liquid pipeline is provided on one side of the bottom of the exhaust gas recovery and treatment fiberglass reinforced plastic tank, and a wastewater treatment pipeline is provided on the other side of the bottom of the exhaust gas recovery and treatment fiberglass reinforced plastic tank.
[0007] More preferably, the exhaust gas recovery and treatment FRP tank outlet is connected to a pressure gauge, the pressure gauge is connected to a FRP fan, the FRP fan is connected to a vent line, and the FRP fan and the pressure gauge form an interlock.
[0008] More preferably, another of the acid-resistant metal hoses is connected to a hydrochloric acid loading and delivery pipeline.
[0009] Compared with the prior art, the present invention has the following beneficial effects:
[0010] The utility model optimizes the original open loading into a closed loading, and adds a subsequent waste gas recovery device. In order to avoid the long-term treatment of acid-containing waste gas and the generation of a large amount of salt crystals precipitating at the bottom of the tank, a stirring device is added to the fiberglass reinforced plastic tank. The utility model realizes the closed recovery and treatment of high-concentration acid-containing waste gas generated during the loading process, avoiding the safety problem of long-term corrosion of surrounding equipment and facilities by acid-containing waste gas in the existing open loading process, and the environmental protection problem of direct discharge of acid-containing waste gas. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 This is a process flow chart of the utility model;
[0012] Figure 2 This is the front view of the sealing flange of the utility model;
[0013] Figure 3 This is a top view of the sealing flange of the utility model;
[0014] The meanings of the accompanying symbols are as follows: 1. Hydrochloric acid tank truck; 2. Sealing flange; 3. Acid-resistant metal hose; 4. Hydrochloric acid loading and conveying pipeline; 5. Exhaust gas pipeline; 6. Stirring device; 7. FRP fan; 8. Vent pipeline; 9. FRP tank for waste gas recovery and treatment; 10. Alkali liquid pipeline; 11. Wastewater treatment pipeline; 12. Pressure gauge. DETAILED DESCRIPTION
[0015] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
[0016] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.
[0017] like Figure 1-3As shown, a high-concentration hydrochloric acid loading acid mist recovery system includes a hydrochloric acid tank truck 1. A sealing flange 2 is provided on the top of the hydrochloric acid tank truck 1. The size of the sealing flange 2 is selected according to the actual hydrochloric acid tank truck 1 on site. Two acid-resistant metal hoses 3 are connected to the sealing flange 2. One acid-resistant metal hose 3 is connected to a hydrochloric acid loading and conveying pipeline 4, and the other acid-resistant metal hose 3 is connected to an exhaust gas pipeline 5, thereby forming a closed loading environment. The other end of the exhaust gas pipeline 5 is connected to the exhaust gas recovery and treatment FRP tank 9, the air outlet of the exhaust gas recovery and treatment FRP tank 9 is connected to a pressure gauge 12, the pressure gauge 12 is connected to the FRP fan 7, the FRP fan 7 is connected to the vent pipeline 8, the FRP fan 7 and the pressure gauge 12 are interlocked. When the pressure reaches the upper limit, the FRP fan 7 opens, and when the pressure reaches the lower limit, the FRP fan 7 closes, ensuring that the internal pressure of the exhaust gas recovery and treatment FRP tank 9 is slightly negative, so that the exhaust gas in the hydrochloric acid tank truck 1 can be transported to the exhaust gas recovery and treatment FRP tank 9 by self-pressure, and at the same time, the remaining treated exhaust gas can be normally discharged through the vent pipeline 8. An alkali liquid pipeline 10 is provided on one side of the bottom of the waste gas recovery and treatment FRP tank 9. After the acid-containing waste gas enters the waste gas recovery and treatment FRP tank 9, it will undergo acid-base neutralization reaction with the alkali liquid transported by the alkali liquid pipeline 10 to treat and recycle the waste gas. A stirring device 6 is provided inside the waste gas recovery and treatment FRP tank 9 to prevent acid-base neutralization salt crystals from precipitating at the bottom of the tank. Long-term use will cause a large amount of accumulation and cannot be discharged from the tank body, which plays a role of stirring and mixing. A wastewater treatment pipeline 11 is provided on the other side of the bottom of the waste gas recovery and treatment FRP tank 9, which can discharge the salt-containing crystals and wastewater from the tank body in time and transport them to the wastewater treatment device.
[0018] When the utility model is used, the hydrochloric acid tank truck 1 is docked at the loading platform before loading, the sealing flange 2 is installed on the tank flange of the hydrochloric acid tank truck 1, the acid-resistant metal hose 3 is connected, and then the hydrochloric acid loading and delivery pipeline 4 and the exhaust gas pipeline 5 are respectively connected to form a closed loading environment. After loading begins, due to the continuous delivery of high-concentration hydrochloric acid, the exhaust gas in the hydrochloric acid tank truck 1 will be transported to the exhaust gas recovery and treatment FRP tank 9 by self-pressure, and the alkali liquid pipeline 10 transports liquid alkali to the exhaust gas recovery and treatment FRP tank 9 to undergo acid-base neutralization reaction with the exhaust gas. The stirring device 6 stirs and mixes, and then the salt-containing crystals are discharged from the tank body with the wastewater through the wastewater treatment pipeline 11 in time and transported to the wastewater treatment device; to prevent the pressure in the exhaust gas recovery and treatment FRP tank 9 from being too high during the treatment process, causing pressure buildup in the exhaust gas transportation process, the FRP fan 7 is turned on when the pressure reaches the upper limit, and the FRP fan 7 is turned off when the pressure reaches the lower limit. The exhaust gas that meets the emission standards after treatment is transported to the vent pipeline 8 through the FRP fan 7 for venting.
[0019] The utility model optimizes the original open loading into a closed loading, and adds a subsequent waste gas recovery device. In order to avoid the long-term treatment of acid-containing waste gas and the generation of a large amount of salt crystals precipitating at the bottom of the tank, a stirring device is added to the fiberglass reinforced plastic tank. The utility model realizes the closed recovery and treatment of high-concentration acid-containing waste gas generated during the loading process, avoiding the safety problem of long-term corrosion of surrounding equipment and facilities by acid-containing waste gas in the existing open loading process, and the environmental protection problem of direct discharge of acid-containing waste gas.
[0020] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A high-concentration hydrochloric acid loading and acid mist recovery system, comprising a hydrochloric acid tanker, characterized in that: The hydrochloric acid tank truck (1) is provided with a sealing flange (2) on the top, and two acid-resistant metal hoses (3) are connected to the sealing flange (2), one of the acid-resistant metal hoses (3) is connected to an exhaust gas pipeline (5), and the other end of the exhaust gas pipeline (5) is connected to an exhaust gas recovery and treatment glass fiber reinforced plastic tank (9), and a stirring device (6) is provided inside the exhaust gas recovery and treatment glass fiber reinforced plastic tank (9), an alkali liquid pipeline (10) is provided on one side of the bottom of the exhaust gas recovery and treatment glass fiber reinforced plastic tank (9), and a wastewater treatment pipeline (11) is provided on the other side of the bottom of the exhaust gas recovery and treatment glass fiber reinforced plastic tank (9).
2. A high-concentration hydrochloric acid loading acid mist recovery system according to claim 1, characterized in that: The exhaust gas recovery and treatment glass fiber reinforced plastic tank (9) has a gas outlet connected to a pressure gauge (12), the pressure gauge (12) is connected to a glass fiber reinforced plastic fan (7), the glass fiber reinforced plastic fan (7) is connected to a vent line (8), and the glass fiber reinforced plastic fan (7) and the pressure gauge (12) form an interlock.
3. A high concentration hydrochloric acid loading acid mist recovery system according to claim 1, characterized in that: Another acid-resistant metal hose (3) is connected to a hydrochloric acid loading and delivery pipeline (4).