Small movable unpowered equipment skid device for treating VOCs (Volatile Organic Compounds)

Abstract

The utility model relates to a small-sized movable unpowered equipment skid device for treating VOCs (volatile organic compounds). The small-sized movable unpowered equipment skid device comprises a shell, a foreign matter remover, an adsorption tower and an adsorption box, the foreign matter remover, the adsorption tower and the adsorption box are all arranged in the shell; two ends of the foreign matter remover are respectively connected with a liquid inlet and a liquid outlet of the shell; a gas inlet of the adsorption tower is connected with a gas inlet of the shell, and a gas outlet of the adsorption tower is connected with a gas inlet of the adsorption box; a gas outlet of the adsorption box is connected with a gas outlet of the shell; a liquid outlet and an air inlet of the shell are respectively semicircular and are combined to form a circular assembly port; a rubber assembly ring is arranged at the circular assembly opening; and the rubber assembly ring is inserted into the wellhead of the bilge well to be treated. The system is specially designed for VOCs treatment of closed bilge wells, and regular inspection and temporary treatment of the multiple bilge wells are achieved.

Description

Technical Field

[0001] This utility model relates to the field of purification equipment technology, and in particular to a small, mobile, non-powered skid device for VOCs treatment. Background Technology

[0002] In recent years, with the increasing emphasis placed on environmental protection by the state, VOCs treatment has become more standardized, with the control of fugitive VOCs emissions from refining and petrochemical enterprises becoming a focal point in the industry. In the daily operations of these enterprises, wastewater wells, as one of the important sources of VOCs emissions, have received considerable attention.

[0003] To suppress the fugitive diffusion of VOCs from wastewater wells, many refining and petrochemical companies use sealing materials such as sand to cover these wells. While this seemingly simple and effective method has revealed numerous safety and environmental problems in long-term practice, the prolonged sealing prevents the normal dissipation of gases inside the wells, causing them to gradually accumulate. When the gas concentration reaches the explosive limit, it can easily trigger an explosion upon encountering an ignition source such as an open flame or static spark, posing a significant threat to the company's safe production.

[0004] On the other hand, the pressure generated by the continuous accumulation of gas constantly acts on the sewage pipeline system. Sewage pipelines operating under this high-pressure environment for extended periods age faster, significantly increasing the probability of cracks and damage to the pipe walls. Once a pipeline ruptures, sewage will leak directly into the ground, polluting the groundwater environment. As a vital water resource reserve, groundwater pollution not only presents significant challenges and high costs for remediation but also impacts the surrounding ecological balance and residents' water safety, triggering a series of chain reactions. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] The technical problem to be solved by this utility model is to provide a small, mobile, non-powered skid device for VOCs treatment, which at least partially solves the above-mentioned technical problem.

[0007] (II) Technical Solution

[0008] This utility model provides a small, mobile, non-powered skid-mounted device for VOCs treatment, comprising a shell, a foreign matter remover, an adsorption tower, and an adsorption box; the foreign matter remover, the adsorption tower, and the adsorption box are all disposed within the shell;

[0009] The two ends of the foreign object remover are respectively connected to the liquid inlet and liquid outlet of the outer shell;

[0010] The air inlet of the adsorption tower is connected to the air inlet of the outer shell, and the air outlet of the adsorption tower is connected to the air inlet of the adsorption box.

[0011] The air outlet of the adsorption box is connected to the air outlet of the outer shell;

[0012] The liquid outlet and air inlet of the outer shell are both semi-circular, which are combined to form a circular assembly port; the circular assembly port is provided with a rubber assembly ring; the rubber assembly ring is inserted into the wellhead of the sewage to be treated.

[0013] Furthermore, the foreign object remover includes: a foreign object remover shell, a carbon steel support tube, and a stainless steel wire; the stainless steel wire is wound in a multi-layer spiral shape onto the carbon steel support tube; both ends of the carbon steel support tube are fixedly connected to the upper and lower inner walls of the foreign object remover shell; the stainless steel wire has a diameter of 0.5-1cm and a mesh size of 200-300.

[0014] Furthermore, the sidewall of the foreign object remover is fixedly connected to the ridge of the inner sidewall of the outer shell; rubber shock-absorbing pads are filled in the gap between the foreign object remover shell and the inner wall of the outer shell.

[0015] Furthermore, the adsorption tower is made of fiberglass with a wall thickness greater than 10 mm; the interior of the adsorption tower is filled with zinc oxide desulfurizing agent particles with a particle size of 3-5 mm, and the filling height accounts for 70% of the tower height.

[0016] Furthermore, the adsorption box is made of 316L stainless steel, and the box is filled with activated carbon fiber felt, molecular sieve and photocatalytic oxidation layer in sequence along the gas flow direction; adjacent fillers are separated and fixed by stainless steel wire mesh with a pore size of 2-3 mm and a mesh count between 10 and 20.

[0017] Furthermore, a gas distributor is installed at the air inlet of the adsorption box; the gas distributor is a perforated plate structure; the material is 304 stainless steel, the plate thickness is 5mm, and the pore diameter is 3mm.

[0018] Furthermore, it also includes a metal bellows; the metal bellows is connected to the air outlet of the outer casing by a flange.

[0019] (III) Beneficial Effects

[0020] The above-mentioned technical solution of this utility model has the following advantages: This device is specifically designed for VOCs treatment in closed sewage wells and possesses unique advantages. It can be quickly installed and deployed without large-scale modifications to the original structure of the sewage well and without requiring any open flames or electrical work, greatly reducing safety risks during construction. It promptly purifies and treats the harmful gases accumulated in the sewage well, while effectively depressurizing, eliminating the explosion hazards and pipeline pressure risks caused by gas accumulation. After each treatment task is completed, the equipment can be easily moved to the next sewage well, enabling regular inspection and temporary treatment of multiple sewage wells. It ensures the safe production and environmental compliance of refining and petrochemical enterprises in a flexible, efficient, and environmentally friendly manner, filling the current gap in solutions for such problems. Attached Figure Description

[0021] The accompanying drawings are provided for illustrative purposes only, and the proportions and quantities of the components in the drawings may not be consistent with the actual product.

[0022] Figure 1 This is a schematic diagram of the structure in an embodiment of the present utility model;

[0023] Figure 2 This is a front view of an embodiment of this utility model;

[0024] Figure 3 This is a bottom view of an embodiment of this utility model;

[0025] Figure 4 This is a top view of an embodiment of this utility model;

[0026] Figure 5 This is a schematic diagram of the connection between the foreign object remover and the outer shell in an embodiment of this utility model. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] See Figure 1-5 As shown, the arrows indicate the flow direction of the liquid or gas.

[0029] This utility model provides a small, mobile, non-powered skid-mounted device for VOCs treatment, comprising a housing 1, a foreign matter remover 2, an adsorption tower 3, and an adsorption box 4. The foreign matter remover 2, adsorption tower 3, and adsorption box 4 are all housed within the housing 1, making the entire device a skid-mounted structure. A forklift-specific channel steel slide rail is provided at the bottom of the housing 1 for easy forklift handling and movement. Alternatively, lifting rings for forklift handling can be installed on the surface of the housing 1. The housing 1 can be made of stainless steel to ensure corrosion resistance and adaptability to the harsh environments of refining and petrochemical plants. The housing 1 has external dimensions of 1-2 meters in length, 1-2 meters in width, and 1-1.5 meters in height, ensuring flexible operation in narrow plant passages and around sewage wells.

[0030] The foreign object remover 2 is connected to the inlet and outlet of the outer shell 1 at both ends. Specifically, the foreign object remover 2 includes: a foreign object remover shell 21, a carbon steel support tube 22, and a stainless steel wire 23. The stainless steel wire 23 is wound in a multi-layer spiral shape onto the carbon steel support tube 22; both ends of the carbon steel support tube 22 are fixedly connected to the upper and lower inner walls of the foreign object remover shell 21; the wire diameter of the stainless steel wire 23 is 0.5-1cm, and the mesh size is 200-300.

[0031] When impurities are carried into the sewage well by the liquid about to enter, the multi-layered, spiral-shaped, and fine stainless steel wires 23 can act like a filter, efficiently capturing the impurities and preventing them from entering and clogging the sewage well. Moreover, as... Figure 5 As shown, the side wall of the foreign object remover 2 is fixedly connected to the ridge 24 of the inner side wall of the outer shell 1. Rubber shock-absorbing pads 25 are filled in the gap between the foreign object remover shell 21 and the inner wall of the outer shell 1, which not only enhances the installation stability of the foreign object remover 2 in the outer shell 1, but also buffers the vibration during operation, avoids the loosening or fatigue damage of parts due to the vibration of the equipment operation, and further improves the reliability of the device.

[0032] The air inlet of adsorption tower 3 is connected to the air inlet of outer shell 1, and the air outlet of adsorption tower 3 is connected to the air inlet of adsorption box 4. Adsorption tower 3 is made of fiberglass with a wall thickness greater than 10 mm. Fiberglass combines the characteristics of being lightweight and high-strength, ensuring sufficient structural strength to withstand internal pressure while reducing the weight of the entire skid-mounted device, making it convenient for forklift handling.

[0033] The adsorption tower 3 is filled with zinc oxide desulfurizing agent particles 31, with a particle size of 3-5 mm. The filling height accounts for 70% of the tower height. The uniform particle size and reasonable filling height provide a sufficient adsorption reaction interface for hydrogen sulfide gas. When sulfur-containing gas passes through the adsorption tower 3, the zinc oxide desulfurizing agent, with its porous structure and chemical adsorption characteristics, can quickly and efficiently adsorb hydrogen sulfide molecules and undergo a chemical reaction, converting harmful hydrogen sulfide into harmless substances. This greatly reduces the sulfur content in the gas, ensuring that the catalyst packing in the subsequent adsorption tank 4 is not affected by sulfur poisoning, maintaining efficient VOCs adsorption and decomposition performance, and ensuring that the purified gas meets emission standards.

[0034] Preferably, the zinc oxide desulfurizing agent particles 31 inside the adsorption tower 3 should be replaceable. For example, a maintenance door can be opened on the outer shell 1, allowing the zinc oxide desulfurizing agent particles 31 inside the adsorption tower to be replaced when the maintenance door is opened. Of course, those skilled in the art can also conceive of other ways to replace the zinc oxide desulfurizing agent particles 31, which will not be elaborated here.

[0035] The outlet of the adsorption box 4 is connected to the outlet of the outer shell 1; the metal bellows 5 is connected to the outlet of the outer shell 1 by a flange. The flange connection ensures airtightness and facilitates connection to the external exhaust pipeline, ensuring that the purified gas is smoothly discharged from the skid device.

[0036] The liquid outlet 10 and air inlet 20 of the outer shell 1 are semi-circular, which are combined to form a circular assembly port; the circular assembly port is provided with a rubber assembly ring 6; the rubber assembly ring 6 is inserted into the wellhead 7 of the sewage well to be treated, so that the device is more tightly connected to the wellhead 7 of the sewage well, effectively preventing gas leakage, ensuring the sealing of the treatment process, avoiding the escape of untreated harmful gases into the surrounding environment, and improving the environmental protection effect.

[0037] The adsorption chamber 4 is made of 316L stainless steel. Inside the chamber, along the gas flow direction, are sequentially filled with activated carbon fiber felt 41, molecular sieve 42, and a photocatalytic oxidation layer 43. Adjacent packing materials are separated and fixed by stainless steel wire mesh 44 with a pore size of 2-3 mm and a mesh count between 10 and 20. The 316L stainless steel material provides the adsorption chamber 4 with superior corrosion resistance, enabling it to maintain good performance even under long-term exposure to complex VOCs gas environments.

[0038] The tightly packed activated carbon fiber felt 41 at the front end utilizes its huge specific surface area to have a strong physical adsorption capacity for common pollutants such as benzene and toluene, which are large molecular VOCs. It can quickly capture a large number of large molecular pollutants as soon as the gas enters the adsorption box 4, reducing the processing burden of the subsequent packing material.

[0039] The molecular sieve 42 laid in the middle layer, with its pore size distribution, adsorbs small molecules and polar VOCs, such as formaldehyde, acetaldehyde and other small molecule aldehydes, further purifying the gas.

[0040] The photocatalytic oxide layer 43, arranged at the rear end, is made of a composite material such as titanium dioxide. Under ultraviolet light (not shown in the figure), it generates highly oxidizing free radicals, which deeply decompose residual recalcitrant VOCs into harmless substances such as carbon dioxide and water, achieving multi-level and all-round purification of VOCs. The photocatalytic oxide layer 43 can also be made of cadmium sulfide (CdS) material, which can exert a certain photocatalytic effect under natural light.

[0041] A gas distributor 45 is installed at the air inlet of the adsorption chamber 4. The gas distributor 45 is a perforated plate structure made of 304 stainless steel, with a plate thickness of 5mm and a pore diameter of 3mm. The use of the gas distributor 45 ensures that the gas entering the adsorption chamber 4 is evenly dispersed, avoiding areas where the flow rate is too fast or too slow. This allows the gas to fully contact each layer of catalyst packing, greatly improving adsorption efficiency, reducing adsorption dead zones caused by uneven airflow distribution, and enhancing the overall purification effect.

[0042] When a wastewater well within the factory area requires VOCs treatment, the operator first selects a suitable handling method based on the actual site conditions. If there is sufficient and convenient forklift operating space, the forklift is driven close to the skid device, and the fork tines are precisely inserted into the channel steel slide rails at the bottom of the skid, ensuring a tight fit between the tines and the slide rails to avoid collisions. The tines are then slowly raised to allow the skid to lift smoothly off the ground. Throughout the handling process, the forklift must maintain a low speed to prevent damage to internal components such as the wire mesh demister and gas distributor 45 due to shaking.

[0043] The forklift lifts the skid block to the top of the sewage well. At this time, the operator inserts the rubber assembly ring 6 into the well opening 7 of the sewage well to be treated, according to the location of the sewage well. At this time, the skid block device of the small mobile non-powered equipment for VOCs treatment is installed in place.

[0044] The wastewater, rich in VOCs, hydrogen sulfide, oil mist, water vapor, and other impurities, flows under its own gravity into the wastewater well via the skid-mounted device's foreign matter remover 2, without external power. After a large amount of wastewater enters, the wastewater well naturally discharges the VOC-containing gas. This VOC-containing gas is then purified and adsorbed sequentially by the adsorption tower 3 and adsorption box 4 before being released into the air.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that not every embodiment contains only one independent technical solution. In the absence of any conflict between the solutions, the various technical features mentioned in each embodiment can be combined in any way to form other implementation methods that can be understood by those skilled in the art.

[0046] Furthermore, without departing from the scope of this utility model, modifications to the technical solutions described in the foregoing embodiments, or equivalent substitutions of some of the technical features, shall not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A VOCs abatement small mobile unpowered equipment pry block device, characterized in that, It comprises a shell, a foreign matter remover, an adsorption tower and an adsorption box; the foreign matter remover, the adsorption tower and the adsorption box are arranged in the shell; Two ends of the foreign matter remover are connected with the liquid inlet and the liquid outlet of the shell respectively; The gas inlet of the adsorption tower is connected with the gas inlet of the shell, and the gas outlet of the adsorption tower is connected with the gas inlet of the adsorption box; The gas outlet of the adsorption box is connected with the gas outlet of the shell; The liquid outlet and the gas inlet of the shell are semicircular and combined to form a circular assembly port; the circular assembly port is provided with a rubber assembly ring; the rubber assembly ring is inserted into the wellhead of a sewage well to be treated.

2. A VOCs abatement small mobile unpowered equipment skid device as claimed in claim 1, wherein, The foreign matter remover comprises a foreign matter remover shell, a carbon steel support pipe and stainless steel wires; the stainless steel wires are spirally wound on the carbon steel support pipe in multiple layers; two ends of the carbon steel support pipe are fixedly connected to the upper and lower inner walls of the foreign matter remover shell respectively; the diameter of the stainless steel wires is 0.5-1cm, and the mesh is 200-300.

3. A VOCs abatement small mobile unpowered equipment skid device as claimed in claim 2, wherein, The side wall of the foreign matter remover is fixedly connected with the ridge of the inner side wall of the shell; a rubber shock pad is filled in the gap between the foreign matter remover shell and the inner wall of the shell.

4. A VOCs abatement small mobile unpowered equipment skid device as claimed in claim 3, wherein, The adsorption tower is made of glass fiber reinforced plastic and has a wall thickness greater than 10mm; the adsorption tower is internally filled with zinc oxide desulfurizer particles with a particle size of 3-5mm, and the filling height accounts for 70% of the height of the tower body.

5. A VOCs abatement small mobile unpowered equipment skid device as claimed in claim 4, wherein, The adsorption box is made of stainless steel 316L, and the box body is sequentially filled with activated carbon fiber felt, molecular sieve and photocatalytic oxidation layer along the gas flow direction; adjacent fillers are fixedly separated by stainless steel wire mesh with a pore size of 2-3mm, and the mesh number of the stainless steel wire mesh is between 10 and 20.

6. A VOCs abatement small mobile unpowered equipment skid unit as claimed in claim 5, characterised in that, A gas distributor is installed at the gas inlet of the adsorption box; the gas distributor is a multi-hole plate structure; the material is stainless steel 304, the plate thickness is 5mm, and the hole diameter is 3mm.

7. A VOCs abatement small mobile unpowered equipment skid unit as claimed in claim 6, characterised in that, It further comprises a metal bellows; the metal bellows is flange-connected with the gas outlet of the shell.

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