CN216909247U - Adsorption separation device based on multichannel material distribution valve - Google Patents

Abstract

The utility model provides an adsorption separation device based on a multi-channel material distribution valve, which comprises an adsorption tower, a pretreatment tower, a first fractionating tower and a second fractionating tower, wherein the adsorption tower sequentially comprises a desorption region, a refining region, an adsorption region and an isolation region from top to bottom, and the desorption region, the refining region, the adsorption region and the isolation region are all formed by a plurality of bed layers; the bed layer comprises a feed inlet, a liquid extracting outlet, a raffinate liquid extracting outlet, a liquid agent adding outlet and a cleaning liquid outlet; the feed inlet, the liquid extracting outlet, the raffinate liquid extracting port, the agent liquid adding port and the cleaning liquid port between every two beds are respectively connected through a multi-channel material distribution valve. By arranging each bed layer of the adsorption tower and the connection relationship between the bed layers, the low-temperature, low-pressure, non-hydrogenation and pure physical adsorption separation are realized, the targeted separation processing is realized, the loss of high-quality components is avoided, and the adsorption separation effect is greatly improved; the multi-channel material distribution valve is applied to valve control of the adsorption tower, so that the number of external electromagnetic valves is greatly reduced.

Description

Adsorption separation device based on multichannel material distribution valve

Technical Field

The utility model relates to the technical field of adsorption towers, in particular to an adsorption separation device based on a multi-channel material distribution valve.

Background

In the adsorption separation technology, the simulated moving bed technology is a novel and efficient technology. The simulated moving bed adsorption separation technology has the advantages of low investment, low energy consumption, easy large-scale production, continuous operation, stable operation, high product purity, high utilization efficiency of the adsorbent and the like, is continuously developed in recent years, and the application field is continuously expanded, so that the technology is expanded from the separation of single petrochemical products to the fields of biochemical industry, pharmacy and the like. Particularly, with the trend of excess oil refining capacity becoming serious day by day, the technology taking 'oil reduction and increase' as the core appeal becomes the mainstream transformation development direction. The gasoline and diesel oil adsorption separation technology utilizes the group composition polarity difference of paraffin, cyclane, olefin and aromatic hydrocarbon in oil products, and adopts a simulated moving bed process to realize high-purity separation of the group composition layer and realize a molecular-level three-dimensional directional processing mode. The single tower of the adsorption tower of the gasoline and diesel oil adsorption separation technology is configured by 8-16 bed layers, the adsorption zone, the purification zone, the desorption zone and the isolation zone are arranged, and the sequence periodic switching of each functional zone is realized through a special valve and a bed layer pipeline arranged outside the tower.

However, the current adsorption separation technology has the following problems: 1) the number of external valves is large, and the pipeline layout is complicated, so that the cost is high; 2) the electromagnetic valve needs to be maintained frequently, and the maintenance cost is high; 3) The whole adsorption separation structure is complex, and the adsorption separation effect is poor.

SUMMERY OF THE UTILITY MODEL

In view of the problems identified in the background art, the present invention provides an adsorption separation device based on a multi-channel material distribution valve.

An adsorption separation device based on a multi-channel material distribution valve comprises an adsorption tower, wherein the adsorption tower sequentially comprises a desorption region, a refining region, an adsorption region and an isolation region from top to bottom, the desorption region consists of N beds, the refining region consists of M beds, the adsorption region consists of P beds, and the isolation region consists of Q beds; the bed layer comprises a feed inlet, a liquid extracting outlet, a raffinate liquid extracting outlet, a liquid agent adding outlet and a cleaning liquid outlet; a feed inlet, a liquid extracting outlet, a raffinate liquid extracting port, a liquid agent adding port and a cleaning liquid port between the beds are respectively connected through a multi-channel material distribution valve; one feed inlet of the adsorption zone is connected with a pretreatment tower, a raffinate outlet of the adsorption zone is connected with a first fractionating tower, and an extract outlet of the desorption zone is connected with a second fractionating tower.

According to one embodiment of the utility model, the first fractionation column comprises a first feed port, a first outlet port, and a first reflux port, and the second fractionation column comprises a second feed port, a second outlet port, and a second reflux port; the first return port and the second return port are both connected with the desorption region through a circulating pump.

According to one embodiment of the utility model, the second reflux inlet is connected to the refining zone.

According to one embodiment of the utility model, the multichannel material distribution valve comprises a spline, a driven wheel, a driving wheel, an angle sensor, a servo driver, a motor, an output shaft, a valve cover, a cross pipe, a rotary disc, a sealing plate, a fixed disc, a rotary shaft, an angle indicating disc, a material pipeline and a device pipeline.

In conclusion, the beneficial effects of the utility model are as follows:

1. by arranging each bed layer of the adsorption tower and the connection relationship between the bed layers, the low-temperature, low-pressure, non-hydrogenation and pure physical adsorption separation are realized, the targeted separation processing is realized, the loss of high-quality components is avoided, and the adsorption separation effect is greatly improved;

2. the multi-channel material distribution valve is applied to valve control of the adsorption tower, so that the number of external electromagnetic valves is greatly reduced, the maintenance of the electromagnetic valves is reduced, the shutdown phenomenon is avoided, and the production cost is greatly reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a simplified schematic diagram of an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a multi-channel material distribution valve in an embodiment of the utility model;

fig. 3 is a schematic structural diagram of a driving part of the multi-channel material distribution valve in the embodiment of the utility model.

Reference numerals: 110. a spline; 120. a driven wheel; 130. a driving wheel; 140. an angle sensor; 210. A servo driver; 220. a motor; 230. an output shaft; 310. a valve housing; 320. spanning the tube; 330. a turntable; 340. a sealing plate; 350. fixing a disc; 360. a rotating shaft; 370. an angle indicating dial; 410. a material pipeline; 420. a device conduit; 510. an adsorption tower; 520. a pretreatment tower; 530. a first fractionation column; 540. a second fractionating tower.

Detailed Description

Please refer to fig. 1 to 3. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.

First, the design of the present invention is described as follows: the adsorption separation device in the prior art has the problems of large number of valves, high valve maintenance cost, poor adsorption separation effect and the like, and in order to solve the problems, the utility model provides a specific implementation mode of the adsorption separation device based on a multi-channel material distribution valve.

An adsorption separation device based on a multi-channel material distribution valve is shown in fig. 1 and comprises an adsorption tower 510, wherein the adsorption tower 510 sequentially comprises a desorption region, a refining region, an adsorption region and an isolation region from top to bottom. In this example, the desorption zone consisted of 4 beds, the purification zone consisted of 3 beds, the adsorption zone consisted of 3 beds, and the isolation zone consisted of 2 beds. Note that the bed is not shown in the figure.

Each bed layer comprises a feed inlet, a liquid extracting outlet, a raffinate outlet, an agent liquid adding port and a cleaning liquid port.

For each bed layer in the adsorption zone, the feed inlet of the top bed layer is connected with a pretreatment tower 520, and the pretreatment tower 520 is used for pretreating diesel into 'aromatic hydrocarbon and non-aromatic hydrocarbon' mixed liquid; the raffinate port of the upper bed layer is connected with the feed port of the lower bed layer, the raffinate port of the bottom bed layer is connected with the first feed port of the first fractionating tower 530, and the first outlet of the first fractionating tower 530 is used for fractionating the non-aromatic liquid; the extract liquid port of each bed layer of the adsorption zone is connected with the feed inlet of the bottom bed layer of the refining zone.

For each bed layer in the refining zone, the liquid extracting outlet of the next bed layer is connected with the feeding inlet of the previous bed layer; the raffinate port of each layer of the refining zone is connected with the feed inlet of the bed layer at the bottom layer of the isolation zone.

For each bed layer in the desorption zone, the extract liquid port of the upper layer is connected with the feed port of the lower layer, the extract liquid port of the bottom layer is connected with the second feed port of the second fractionating tower 540, and the second outlet of the second fractionating tower 540 is used for fractionating the 'aromatic hydrocarbon' liquid; the raffinate port of each bed layer of the desorption region is connected with the feed inlet of the bed layer at the bottom layer of the isolation region;

for each bed layer in the isolation area, the liquid extracting and discharging port of the next layer is connected with the feeding port of the previous layer; the extract liquid port on the top layer of the isolation zone is connected with the agent liquid adding port on each bed layer of the adsorption zone.

A first reflux port of the first fractionating tower 530 is connected with an agent liquid adding port of each bed layer of the desorption region through a circulating pump; the second reflux port of the second fractionating tower 540 is connected with the agent liquid adding port of each bed layer in the desorption zone through a circulating pump.

The feed inlet, the liquid extracting outlet, the raffinate liquid extracting port, the agent liquid adding port and the cleaning liquid port among the bed layers are respectively connected through a multi-channel material distribution valve.

Further, a second reflux port of the second fractionating tower 540 is connected to the liquid agent addition port of each bed layer of the refining zone through a circulating pump, and the refluxed aromatic hydrocarbon component and the desorbent are used to displace and purify the impurity component in the adsorbent in the refining zone.

In the above-mentioned specific structure of the multi-channel material distribution valve, as shown in fig. 2 and 3, the multi-channel material distribution valve includes a spline 110, a driven wheel 120, a driving wheel 130, an angle sensor 140, a servo driver 210, a motor 220, an output shaft 230, a valve housing 310, a cross pipe 320, a rotating disc 330, a sealing plate 340, a fixed disc 350, a rotating shaft 360, an angle indicating disc 370, a material pipe 410, and a device pipe 420.

When the multi-channel material distribution valve works, the servo driver 210 sends out a control command, the driving motor 220 works to enable the output shaft 230 to rotate, so that the driving wheel 130 connected with the output shaft 230 rotates, and the driving wheel 130 is a gear with incomplete gear teeth, so that the meshing between the driving wheel 130 and the driven wheel 120 is indirect, namely the driving wheel 130 rotates 360 degrees, and the driven wheel 120 rotates indirectly. The rotation shaft 360 connected to the driven wheel 120 rotates, and the rotation plate 330 connected to the rotation shaft 360 rotates. Meanwhile, the angle sensor 140 feeds back the angle of the driven wheel 120 to the servo driver 210 in real time, the servo driver 210 determines whether the angle feedback reaches a set error value, if so, the servo driver 210 sends an instruction to control the motor 220 to change when receiving the feedback, and adjusts the real-time angle and the movement direction of the driving wheel 130, and if not, the system continues the original movement route. The angle sensor 140 has dynamic response and positioning tasks through which accumulated errors can be identified and calibrated through feedback.

The top surface of the sealing plate 340 is connected to the bottom surface of the rotating disk 330 so as to rotate together with the rotating disk 330, the bottom surface of the sealing plate 340 is in sealing contact with the top surface of the fixed disk 350, the fixed disk 350 and the valve housing 310 are fixed, and a sealed chamber is formed. A plurality of cross tubes 320 are located within the sealed chamber, the lower ends of the cross tubes 320 being connected to the turntable 330 so as to be rotatable with the turntable 330. The plurality of material pipelines 410 and the plurality of device pipelines 420 are located outside the sealed cavity, the upper ends of the material pipelines 410 and the upper ends of the plurality of device pipelines 420 are respectively connected with the lower surface of the fixed disc 350, the fixed disc 350 is provided with a plurality of annular grooves, each annular groove corresponds to one material pipeline 410, the rotating part consisting of the rotating disc 330 and the sealing plate 340 is provided with corresponding waist-shaped holes corresponding to the grooves of the fixed disc 350, and medium circulation can be realized. The sealing plate 340 may communicate or isolate several material conduits 410 and a plurality of apparatus conduits 420.

Therefore, the liquid can be input into the fixed plate 350 through the material pipe 410, and then, the liquid is circulated to the rotating plate 330 through the sealing plate 340 and the kidney-shaped hole, and is output from the device pipe 420 to a designated device through the crossover pipe 320 above the liquid. And the flow path line is bidirectional. That is, material delivered to the valve from a given device is output from material conduit 410 via device conduit 420, through cross-over pipe 320. The plurality of material conduits 410 and the plurality of device conduits 420 may comprise a series of a plurality of conduits independent of each other, and when the shaft 360 is rotated to different positions, different material conduits 410 and device conduits 420 are communicated via the cross-tube 320.

In summary, in the present embodiment, by setting each bed layer of the adsorption tower 510 and the connection relationship between the bed layers, low-temperature, low-pressure, non-hydro, pure physical adsorption separation is realized, targeted separation processing is performed, loss of high-quality components is avoided, and the adsorption separation effect is greatly improved; the multichannel material distribution valve is applied to the valve control of the adsorption tower 510, so that the number of external electromagnetic valves is greatly reduced, the maintenance of the electromagnetic valves is reduced, the shutdown phenomenon is avoided, and the production cost is greatly reduced.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (4)

1. An adsorption separation device based on a multi-channel material distribution valve comprises an adsorption tower, the adsorption tower sequentially comprises a desorption zone, a refining zone, an adsorption zone and an isolation zone from top to bottom, and is characterized in that,

the desorption zone consists of N beds, the refining zone consists of M beds, the adsorption zone consists of P beds, and the isolation zone consists of Q beds;

the bed layer comprises a feed inlet, a liquid extracting outlet, a raffinate liquid extracting outlet, a liquid agent adding outlet and a cleaning liquid outlet;

a feed inlet, a liquid extracting outlet, a raffinate liquid extracting port, a liquid agent adding port and a cleaning liquid port between the beds are respectively connected through a multi-channel material distribution valve;

the feed inlet of the adsorption zone is connected with a pretreatment tower, the raffinate outlet of the adsorption zone is connected with a first fractionating tower, and the extract outlet of the desorption zone is connected with a second fractionating tower.

2. The adsorption separation device based on the multi-channel material distribution valve is characterized in that the first fractionating tower comprises a first feeding hole, a first outlet and a first reflux port, and the second fractionating tower comprises a second feeding hole, a second outlet and a second reflux port;

the first return port and the second return port are connected with the desorption region through a circulating pump.

3. The adsorptive separation device based on the multi-channel material distribution valve according to claim 2, wherein the second return port is connected to the polishing zone.

4. The adsorption separation device based on the multichannel material distribution valve according to claim 1, wherein the multichannel material distribution valve comprises a spline, a driven wheel, a driving wheel, an angle sensor, a servo driver, a motor, an output shaft, a valve cover, a cross pipe, a rotating disc, a sealing plate, a fixed disc, a rotating shaft, an angle indicating disc, a material pipeline and a device pipeline.

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