Organic matter decolorizing device
By designing an organic substance decolorization device containing a stirred tank and a multi-stage adsorption and regeneration mechanism, the activated carbon fiber module is used to perform multi-stage adsorption and decolorization, and through the regeneration process of steam and hot nitrogen, the production cycle and solidity of traditional activated carbon decolorization methods are solved. The problem of large waste treatment volume and weak selectivity has achieved efficient and environmentally friendly organic decolorization effect.
Patent Information
- Application Number
- CN202421236267.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-05-31
AI Technical Summary
In the prior art, after organic matter hydrolysis and decolorization using traditional activated carbon, the production cycle is long, the solid waste hazardous waste treatment volume is large, and the broad spectrum decolorization leads to weak selectivity.
An organic substance decolorization device including a stirring tank and an adsorption and regeneration mechanism is designed, and a multi-stage adsorption and decolorization is performed using at least two closed tanks, and the efficient regeneration of activated carbon is achieved through the regeneration process of steam and hot nitrogen.
It realizes efficient decolorization of crude organic products, reduces the production cycle and solid waste treatment volume, improves the decolorization selectivity, and activated carbon can be recycled and used, reducing the harm of solid waste.
Smart Images
Figure CN222445458U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of chemical industry, in particular to an organic matter decolorization device. Background Art
[0002] Activated carbon adsorption decolorization is a common decolorization process in chemical experiments and production. Activated carbon adsorption is divided into physical adsorption and chemical adsorption.
[0003] Physical adsorption mainly occurs in the process of activated carbon removing impurities from liquid and gas phases. The porous structure of activated carbon provides a large surface area, making it very easy to absorb and collect impurities. All molecules have mutual attraction, and for this reason, a large number of molecules on the pore walls of activated carbon can produce strong attraction (van der Waals force), thereby achieving the purpose of attracting impurities in the medium into the pores. In addition to physical adsorption, chemical adsorption also often occurs on the surface of activated carbon. The surface of activated carbon contains a small amount of oxygen and hydrogen in the form of chemically bound, functional groups, such as carboxyl, hydroxyl, phenols, lactones, quinones, ethers, etc. The oxides or complexes contained on these surfaces can react chemically with the adsorbed substances, thereby combining with the adsorbed substances and aggregating to the surface of the activated carbon.
[0004] After the organic matter is hydrolyzed, the crude organic matter needs to be decolorized before being sent to the crystallization unit to ensure that the product produced by the crystallization unit has no excessive color enrichment. The production cycle of traditional activated carbon decolorization is long, the amount of solid waste and hazardous waste to be treated is large, and its broad-spectrum decolorization results in weak selectivity.
[0005] Therefore, how to design a device for efficiently decolorizing organic matter using activated carbon is an urgent problem to be solved by those skilled in the art. Summary of the invention
[0006] The purpose of the utility model is to provide an organic decolorization device in view of the deficiencies in the prior art, which has a simple structure and low maintenance cost, can decolorize crude organic products efficiently and environmentally friendly, and meet the actual needs of enterprises.
[0007] The technical scheme of the utility model is: an organic decolorization device, including a stirring kettle and an adsorption regeneration mechanism, wherein the inlet of the stirring kettle is connected to a crude organic product source and a solvent source, and the adsorption regeneration mechanism comprises at least two closed tank bodies, wherein a partition is arranged in the closed tank body along the height direction, and the internal space of the closed tank body is divided into an independent first cavity and a second cavity, wherein the upper ends of the first cavity and the second cavity are connected, and the first cavity and the second cavity are respectively fixedly filled with activated carbon fiber modules, and a feed inlet is arranged at the bottom of one side of the closed tank body, which is connected to the first cavity, and the other is connected to the first cavity. A discharge port is arranged at the bottom of one side, which is communicated with the second cavity, and a first valve and a second valve are arranged respectively to control opening and closing. At least two closed tank bodies are connected in series, a steam / air inlet is arranged on the other side of the closed tank body, a steam / air outlet is arranged on one side, and a third valve and a fourth valve are arranged respectively to control opening and closing. A hot nitrogen source inlet is also arranged on the top of the closed tank body, and a fifth valve is arranged to control opening and closing. The hot nitrogen source inlet corresponds to the top of the second cavity, and the outlet of the stirring tank is connected to the feed port of the closed tank body located upstream, and the combination constitutes an organic decolorization device.
[0008] The discharge port is connected in parallel with a backwash water inlet, which is located downstream of the second valve. The backwash water inlet is provided with a sixth valve to control opening and closing. The feed port is connected in parallel with a backwash water outlet, which is located upstream of the first valve. The backwash water outlet is provided with a seventh valve to control opening and closing.
[0009] The backwash water inlets are connected in parallel, and the backwash water outlets are connected in parallel.
[0010] The steam / air inlets are connected in parallel, and the steam / air outlets are connected in parallel.
[0011] The steam / air inlet is provided with an air filter.
[0012] The steam / air inlet is provided with a pressure reducing valve.
[0013] The pressure reducing valve is a self-operated pressure reducing valve.
[0014] It also includes a filter connected to the discharge port of the downstream closed tank body, and a feed pump is arranged between the filter and the downstream closed tank body.
[0015] The above technical solution has the following beneficial effects:
[0016] 1. An organic decolorization device comprises a stirring tank and an adsorption regeneration mechanism, wherein the adsorption regeneration mechanism is used to adsorb chromophores and auxochromes in crude organic products to achieve the purpose of decolorization and can be regenerated. The inlet of the stirring tank is connected to a crude organic product source and a solvent source, and the stirring tank is used to mix the crude organic product to be decolorized and the solvent to form a mobile phase. The adsorption regeneration mechanism comprises at least two closed tank bodies, wherein a partition is arranged in the height direction of the closed tank body, and the internal space of the closed tank body is divided into an independent first cavity and a second cavity, wherein the upper ends of the first cavity and the second cavity are connected, and the first cavity and the second cavity are respectively fixedly filled with activated carbon fiber modules, that is, the internal space of the closed tank body forms a flow channel of an inverted U-shaped structure, wherein a feed inlet is arranged at the bottom of one side of the tank body, and a discharge outlet is arranged at the bottom of the other side, and a first valve and a second valve are respectively arranged to control opening and closing, and by opening the corresponding valve, the mobile phase is adsorbed by the filled activated carbon fiber module when the mobile phase flows, thereby achieving the purpose of decolorization. At least two closed tanks are connected in series. The two closed tanks are connected in series, and the mobile phase can be decolorized in multiple stages. Any of the closed tanks can also be isolated by closing the corresponding valves as needed to perform decolorization or other operations separately. A steam / air inlet is set on the other side of the closed tank, and a steam / air outlet is set on one side. A third valve and a fourth valve are respectively set to control the opening and closing. The isolated closed tank can be reversely filled with steam into the closed tank through the steam / air inlet to desorb impurities such as chromophores and auxochromes adsorbed on the activated carbon fiber module, and the mixed vapor phase containing steam and impurity vapor is discharged from the closed tank through the steam / air outlet by steam purging for sewage treatment. The top of the closed tank body is also provided with a hot nitrogen source inlet, and a fifth valve is set to control the opening and closing. The hot nitrogen source inlet corresponds to the top of the second cavity. After the isolated closed tank body is regenerated by steam, hot nitrogen is introduced to press out the steam and impurity steam remaining in the closed tank body, reduce the water content on the activated carbon fiber module in the closed tank body, and finally, inject air at room temperature through the steam / air inlet to cool the activated carbon fiber module to achieve the purpose of regeneration, and can be reused to decolorize the mobile phase. By closing and opening the corresponding valve, the regeneration of the activated carbon fiber module can be completed for the isolated closed tank body, and the adsorption of the mobile phase by other closed tank bodies will not be delayed, which can greatly improve the decolorization efficiency of the mobile phase. The outlet of the stirred tank is connected to the feed port of the closed tank body located upstream, and the combination constitutes an organic decolorization device.
[0017] 2. A recoil water inlet is connected in parallel to the discharge port and is located downstream of the second valve. A sixth valve is provided at the recoil water inlet to control opening and closing. A recoil water outlet is connected in parallel to the feed port and is located upstream of the first valve. A seventh valve is provided at the recoil water outlet to control opening and closing. When excessive steam is charged and the temperature inside the closed tank is too high, the corresponding valve can be opened and recoil water can be charged to cool it down to avoid safety accidents.
[0018] 3. An air filter is installed at the steam / air inlet to filter and remove impurities from the incoming air to avoid the introduction of new impurities.
[0019] 4. The steam / air inlet is equipped with a pressure reducing valve to stabilize the flow of steam or air and ensure smooth regeneration of the activated carbon fiber module.
[0020] Further description is given below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a connection diagram of the utility model;
[0022] Figure 2 It is a connection diagram of the adsorption regeneration mechanism of the utility model.
[0023] In the accompanying drawings, 1 is a stirred tank, 2 is an adsorption regeneration mechanism, 3 is a closed tank body, 31 is a feed port, 32 is a discharge port, 33 is a steam / air inlet, 34 is a steam / air outlet, 35 is a hot nitrogen source inlet, 36 is a backwash water inlet, 37 is a backwash water outlet, 4 is a partition, 5 is a first cavity, 6 is a second cavity, 7 is an activated carbon fiber module, a is a first valve, b is a second valve, c is a third valve, d is a fourth valve, e is a fifth valve, f is a sixth valve, and g is a seventh valve. DETAILED DESCRIPTION
[0024] In this embodiment, the activated carbon fiber module is purchased from Beijing Rixin Yuanwang Technology Co., Ltd.'s complete set of activated carbon fiber modules, and suitable activated carbon fiber modules are screened through preliminary small-scale experiments.
[0025] See also Figure 1 and Figure 2, which is a specific embodiment of an organic decolorization device. The organic decolorization device includes a stirring tank 1 and an adsorption regeneration mechanism 2. The inlet of the stirring tank 1 is connected to a crude organic product source and a solvent source. The stirring device is a conventional equipment in the chemical industry, which is used to prepare the crude organic product to be decolorized as a mobile phase. The adsorption regeneration mechanism 2 includes at least two closed tank bodies 3. In this embodiment, the number of closed tank bodies is three, all of which are vertical tanks. A partition 4 is arranged in the closed tank body 3 along the height direction to separate the internal space of the closed tank body 3 into an independent first cavity 5 and a second cavity 6. Specifically, the first cavity is located on the left and the second cavity is located on the right. The upper ends of the first cavity 5 and the second cavity 6 are connected, and the first cavity 5 and the second cavity 6 are respectively fixedly filled with activated carbon fiber modules 7. A feed port 31 is provided at the bottom of the left side of the closed tank body 3, which is connected to the first cavity 5, and a discharge port 32 is provided at the bottom of the other side, which is connected to the second cavity 6, and a first valve a and a second valve b are provided to control opening and closing. Usually, in order to avoid the mobile phase directly impacting the activated carbon fiber module, the activated carbon fiber module and the tank bottom of the closed tank body have a height space, and the feed port and the discharge port are extended in the horizontal direction. Three closed tank bodies 3 are connected in series. A steam / air inlet 33 is provided on the right side of the closed tank body 3, and a steam / air outlet 34 is provided on the left side, and a third valve c and a fourth valve d are provided to control opening and closing, respectively. Specifically, each steam / air inlet 33 is connected in parallel, each steam / air outlet 34 is connected in parallel, and an air filter and a self-acting pressure reducing valve are provided at the steam / air inlet 33. A hot nitrogen source inlet 35 is also provided at the top of the closed tank body 3, and a fifth valve e is provided to control opening and closing. The hot nitrogen source inlet 35 corresponds to the top of the second cavity 6, and the temperature of the hot nitrogen is adjusted according to actual needs. The outlet of the stirring tank is connected to the feed port of the upstream closed tank body, and also includes a filter connected to the discharge port 32 of the downstream closed tank body 3. A feed pump is arranged between the filter and the downstream closed tank body, and the combination constitutes an organic decolorization device.
[0026] Furthermore, in order to ensure safety, a backwash water inlet 36 is connected in parallel to the discharge port 32 of each closed tank body, which is located downstream of the second valve b. The backwash water inlet 36 is provided with a sixth valve f to control opening and closing. A backwash water outlet 37 is connected in parallel to the feed port 31 of each closed tank body, which is located upstream of the first valve a. The backwash water outlet 37 is provided with a seventh valve g to control opening and closing, and each backwash water inlet 36 is connected in parallel, and each backwash water outlet 37 is connected in parallel.
[0027] The working principle of the utility model is as follows: the crude organic matter to be decolorized and the solvent are put into a stirring kettle, after being stirred and mixed, they enter the interior of a closed tank body through the feed port of the closed tank body, and the chromogenic groups and the auxochromogenic groups therein are adsorbed by the activated carbon fiber modules in three closed tank bodies in turn. After the decolorization is completed, they are discharged through the discharge port, filtered again by the filter, and sent to the crystallization process.
[0028] When it is necessary to regenerate the module of a specific closed tank, first drain the mobile phase in the closed tank, then close the first valve and the second valve of all closed tanks (the decolorization and adsorption are still being carried out in other closed tanks), open the third valve and the fourth valve of the specific closed tank, fill the specific closed tank with steam, so that the adsorbed chromophore and auxochrome groups are separated from the activated carbon limiting module, in a vapor state, and discharged from the closed tank through the steam / air outlet for sewage treatment. If the temperature is too high, the first valve, the second valve, the sixth valve, and the seventh valve of the specific tank can be opened to cool down by filling backwash water. Then close the third valve and the fourth valve, open the fifth valve, fill hot nitrogen, squeeze the remaining water vapor, vapor-like chromophore and auxochrome groups in the closed tank out of the closed tank, and carry out sewage treatment. Close the fifth valve, and open the third valve and the fourth valve again, fill the specific closed tank with cold air, cool down the activated carbon fiber module, and complete the regeneration operation. Close the third valve and the fourth valve, open the first valve and the second valve of each closed tank, and continue the decolorization treatment.
Claims
1. An organic decolorization device, characterized in that: It comprises a stirring kettle (1) and an adsorption regeneration mechanism (2). The inlet of the stirred tank (1) is connected to a crude organic product source and a solvent source. The adsorption regeneration mechanism (2) comprises at least two closed tank bodies (3), wherein a partition (4) is arranged in the closed tank body (3) along the height direction to divide the internal space of the closed tank body (3) into an independent first cavity (5) and a second cavity (6), wherein the upper ends of the first cavity (5) and the second cavity (6) are connected, and the first cavity (5) and the second cavity (6) are respectively fixedly filled with activated carbon fiber modules (7). A feed port (31) is provided at the bottom of one side of the closed tank body (3), which is communicated with the first cavity (5), and a discharge port (32) is provided at the bottom of the other side, which is communicated with the second cavity (6), and a first valve (a) and a second valve (b) are provided respectively to control opening and closing, and at least two closed tank bodies (3) are connected in series. The other side of the closed tank body (3) is provided with a steam / air inlet (33), and the one side is provided with a steam / air outlet (34), and a third valve (c) and a fourth valve (d) are respectively provided to control opening and closing. The top of the closed tank body (3) is also provided with a hot nitrogen source inlet (35), and a fifth valve (e) is provided to control opening and closing. The hot nitrogen source inlet (35) corresponds to the top of the second cavity (6). The outlet of the stirring tank is connected to the feed inlet of the closed tank body located upstream, and the combination forms an organic matter decolorization device.
2. The organic matter decolorization device according to claim 1, characterized in that: The discharge port (32) is connected in parallel with a backwash water inlet (36) located downstream of the second valve (b), and a sixth valve (f) is provided at the backwash water inlet (36) to control opening and closing. The feed port (31) is connected in parallel with a backwash water outlet (37) located upstream of the first valve (a), and a seventh valve (g) is provided at the backwash water outlet (37) to control opening and closing.
3. The organic matter decolorization device according to claim 2, characterized in that: The backwash water inlets (36) are connected in parallel, and the backwash water outlets (37) are connected in parallel.
4. The organic matter decolorization device according to claim 1, characterized in that: The steam / air inlets (33) are connected in parallel, and the steam / air outlets (34) are connected in parallel.
5. The organic matter decolorization device according to claim 1, characterized in that: The steam / air inlet (33) is provided with an air filter.
6. The organic matter decolorization device according to claim 1, characterized in that: The steam / air inlet (33) is provided with a pressure reducing valve.
7. The organic matter decolorization device according to claim 6, characterized in that: The pressure reducing valve is a self-operated pressure reducing valve.
8. The organic matter decolorization device according to claim 1, characterized in that: It also includes a filter connected to the discharge port (32) of the downstream closed tank body (3), and a feed pump is arranged between the filter and the downstream closed tank body.