A new gas condenser

Abstract

The utility model relates to gas condenser technical field discloses a novel gas condenser, include: condenser shell, the condenser shell top is opened with gas import, the condenser shell bottom is opened with gas export, gas from the gas import enters in the condenser and is condensed after from the gas export and is discharged, the gas that from the gas export is discharged enters tail gas absorption tower again, a plurality of radiator, the radiator is connected with the condenser shell and is composed condenser box body structure after, the radiator includes a plurality of fin heat exchange row pipe, cooling water import and cooling water export, condensate export, the condensate export is located at the condenser shell bottom.

Description

Technical Field

[0001] This utility model relates to the field of gas condenser technology, and more specifically, to a novel gas condenser. Background Technology

[0002] The two main production processes for synthetic leather manufacturers, the wet process and the dry process, both use DMF as a solvent in the formulation. Because DMF has industrial value and direct discharge does not comply with environmental regulations, it needs to be separated, removed, and collected before the finished synthetic leather is produced. This process involves two steps: firstly, water is used to extract and absorb the DMF; secondly, an oven is used to remove the remaining DMF in gaseous form from the product. Simultaneously, an induced draft fan guides the exhaust gas into a VOC exhaust gas absorption tower, where multi-stage circulating water spraying absorbs the remaining DMF. This results in an aqueous solution containing a certain concentration of DMF (which is then recycled and disposed of) and exhaust gas that meets emission standards.

[0003] In terms of process design, VOC exhaust gas is treated by a VOC exhaust gas absorption tower. Through three- or five-stage circulating spraying, DMF is absorbed by the spray water, so that the VOC detection value in the exhaust gas is less than 50ppm (currently) in order to meet the emission standards.

[0004] However, increasingly stringent environmental standards have added variable factors, with emission standards becoming ever higher. Due to factors such as production line processes or insufficient absorption tower stages, VOC tail gas absorption towers may experience high loads when treating tail gas, resulting in situations where the VOC content in the final tail gas is close to or even exceeds the emission standards. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a novel gas condenser. In order to avoid the shortcomings of the existing process, a pre-condenser is added at the front end of the VOC tail gas absorption tower to condense and collect DMF water vapor, thereby reducing the DMF concentration in the subsequent tail gas, greatly reducing the treatment load of the VOC tail gas scrubbing tower, and making the VOC value of the terminal exhaust gas stable and qualified.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows: A novel gas condenser includes: The condenser shell has a gas inlet at the top and a gas outlet at the bottom. Gas enters the condenser through the gas inlet, is condensed in the condenser, and is discharged through the gas outlet. The gas discharged from the gas outlet then enters the tail gas absorption tower. A plurality of radiators are connected to the condenser shell to form a condenser housing structure. Each radiator includes a plurality of finned heat exchange tubes, a cooling water inlet, and a cooling water outlet. The cooling water inlet is connected to a cooling water inlet pipe, and the cooling water outlet is connected to a cooling water outlet pipe. Condensate outlet, which is located at the bottom of the condenser shell.

[0007] As a further improvement to this utility model, a manhole is also provided on the condenser shell, and an inspection door is installed on the manhole.

[0008] As a further improvement to this utility model, a filter screen is provided between the condenser shell and the radiator.

[0009] As a further improvement to this utility model, the cooling water flowing in from the cooling water inlet flows out from the cooling water outlet through the finned heat exchange tubes from bottom to top.

[0010] As a further improvement to this utility model, the diameter of the top ends of the cooling water inlet pipe and the cooling water outlet pipe is reduced.

[0011] As a further improvement to this utility model, the cooling water inlet pipe is connected to each cooling water inlet in sequence through branch pipes.

[0012] The beneficial technical effects of this utility model are: This invention, located at the front end of a VOC tail gas absorption tower, features a multi-layered radiator with several finned heat exchange tubes distributed from bottom to top. Utilizing the special configuration of the finned heat exchange tubes and the excellent heat transfer properties of metal, it enhances the condensation effect on high-temperature DMF vapors. This significantly reduces the DMF content in the tail gas at the front end of the VOC tail gas absorption tower, greatly reducing the load on the VOC tail gas absorption tower and ensuring stable and compliant VOC indicators in the emitted tail gas. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a flowchart illustrating the workflow of this utility model. Figure 3 This is a side view of the present invention; Figure 4 This is a three-dimensional structural diagram of the finned heat exchange tube of this utility model.

[0014] In the diagram: 1. Condenser shell; 2. Gas inlet; 3. Manhole; 4. Filter screen; 5. Radiator; 51. Finned heat exchange tubes; 52. Cooling water inlet; 53. Cooling water outlet; 6. Gas outlet; 7. Condensate outlet; 8. Cooling water inlet pipe; 9. Cooling water outlet pipe. Detailed Implementation

[0015] In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0016] Combination Figure 1 - As shown in Figure 4, this utility model provides the following embodiments: A novel gas condenser includes: a condenser shell 1, a gas inlet 2, radiators 5, a gas outlet 6, and a condensate outlet 7. The condenser shell 1 comprises several sections, with the two ends of the condenser shell 1 being taller. The radiators 5 are connected by shorter sections of the condenser shell 1. The condenser is located at the front end of the tail gas absorption tower and reduces the DMF content in the tail gas through condensation. The top of the condenser shell 1 has a gas inlet 2, and the bottom of the condenser shell 1 has a gas outlet 6. Gas enters through the gas inlet 2, condenses in the condenser, and then exits through the gas outlet 6. The gas exiting through the gas outlet 6 then re-enters the tail gas absorption tower.

[0017] After the radiator 5 is connected to the condenser shell 1, it forms a condenser housing structure. The radiator 5 includes several finned heat exchange tubes 51, a cooling water inlet 52, and a cooling water outlet 53. The finned heat exchange tubes 51 are located inside the radiator 5 shell, and can be equipped with four layers of filters, each layer containing several rows. The cooling water inlet 52 is connected to the cooling water inlet pipe 8, and the cooling water outlet 53 is connected to the cooling water outlet pipe 9. Circulating water is used to cool the high-temperature gas, combined with... Figure 2 The cooling water flows downwards and outwards, then is distributed in layers through the finned heat exchange tubes 51, where heat is exchanged through the tube walls and fins; cooling and condensing a large amount of DMF gas in the exhaust gas, greatly reducing the DMF content in the subsequent exhaust gas.

[0018] Condensate outlet 7 is located at the bottom of condenser shell 1. DMF condensate generated during condensation collects at the bottom and can be discharged from condensate outlet 7, and periodically manually transported to the circulating water tank of the corresponding concentration level of the VOC tail gas absorption tower.

[0019] As another preferred embodiment of this utility model, a manhole 3 is also provided on the condenser shell 1, and an inspection door is installed on the manhole 3. This facilitates inspection and maintenance of the condenser interior.

[0020] As another preferred embodiment of this utility model, a filter screen 4 is provided between the condenser shell 1 and the radiator 5. High-temperature gas enters from the top and exits from the bottom before being introduced again, and the filter screen 4 intercepts impurities such as lint.

[0021] In another preferred embodiment of this invention, cooling water flowing in from the cooling water inlet 52 flows from bottom to top through the finned heat exchange tubes 51 and exits from the cooling water outlet 53. The cooling water flow direction is as follows: Figure 2As shown, the corresponding cooling water inlet 52 and cooling water outlet 53 are located as follows: Figure 1 As shown.

[0022] As another preferred embodiment of this utility model, the top diameters of the cooling water inlet pipe 8 and the cooling water outlet pipe 9 are reduced. This ensures the cooling water pressure, and the cooling water outlet pipe 9 is identical to the cooling water inlet pipe 8, guaranteeing the same flow rate and stable circulation.

[0023] As another preferred embodiment of this utility model, the cooling water inlet pipe 8 is connected to each cooling water inlet 52 in sequence through branch pipes. The pipeline distribution is reasonable, and the cooling water circulation effect is good.

[0024] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A novel gas condenser characterized in that, include: A condenser shell (1) is provided with a gas inlet (2) at the top and a gas outlet (6) at the bottom. Gas enters the condenser through the gas inlet (2), is condensed, and is discharged through the gas outlet (6). The gas discharged through the gas outlet (6) then enters the tail gas absorption tower. A number of radiators (5) are connected to the condenser shell (1) to form a condenser box structure. The radiator (5) includes a number of finned heat exchange tubes (51), a cooling water inlet (52) and a cooling water outlet (53). The cooling water inlet (52) is connected to the cooling water inlet pipe (8) and the cooling water outlet (53) is connected to the cooling water outlet pipe (9). Condensate outlet (7) is located at the bottom of the condenser shell (1).

2. The novel gas condenser according to claim 1, characterized in that, The condenser housing (1) is also provided with a manhole (3), and an inspection door is installed on the manhole (3).

3. The novel gas condenser according to claim 1, characterized in that, A filter screen (4) is provided between the condenser housing (1) and the radiator (5).

4. The novel gas condenser according to claim 1, characterized in that, Cooling water flowing in from the cooling water inlet (52) flows from bottom to top through the finned heat exchange tubes (51) and out from the cooling water outlet (53).

5. The novel gas condenser according to claim 1, characterized in that, The diameter of the top ends of the cooling water inlet pipe (8) and the cooling water outlet pipe (9) becomes thinner.

6. The novel gas condenser according to claim 5, characterized in that, The cooling water inlet pipe (8) is connected to each cooling water inlet (52) in sequence through branch pipes.

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