CN201783228U - Integrated system based on zigzag rotating bed for strengthening absorption and desorption processes - Google Patents

Integrated system based on zigzag rotating bed for strengthening absorption and desorption processes Download PDF

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Publication number
CN201783228U
CN201783228U CN2010202941986U CN201020294198U CN201783228U CN 201783228 U CN201783228 U CN 201783228U CN 2010202941986 U CN2010202941986 U CN 2010202941986U CN 201020294198 U CN201020294198 U CN 201020294198U CN 201783228 U CN201783228 U CN 201783228U
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liquid
revolving bed
middle level
baffle type
type revolving
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Expired - Fee Related
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CN2010202941986U
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徐之超
计建炳
李肖华
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Zhejiang University of Technology ZJUT
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Zhejiang University of Technology ZJUT
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Abstract

The utility model relates to an integrated system based on a zigzag rotating bed for strengthening absorption and desorption processes, which mainly comprises a multi-layer zigzag rotating bed. Liquid materials are communicated with a lower-layer liquid inlet, carrier gases are communicated with a lower-layer gas phase inlet, a middle-layer liquid outlet A is communicated with a middle-layer circle absorbing fluid container which is communicated with a middle-layer liquid inlet, a liquid pump B diverts and transfer liquid through a liquid flow meter F, the top of an upper layer is provided with an upper-layer liquid inlet and a top gas phase outlet, a middle-layer liquid outlet B is communicated with an upper-layer circle absorbing fluid container which is communicated with the upper-layer liquid inlet through a liquid pump A to form one transferring path, and the liquid pump A is communicated with the middle-layer liquid inlet through a liquid flow meter C to form another transferring path. The integrated system based on a zigzag rotating bed for strengthening absorption and desorption processes has the advantages of being not only simple in operation but also capable of downsizing device volume dramatically, thereby realizing an ideal goal of saving resources of metal, land and space.

Description

Based on baffle type revolving bed desorbing/absorbing process reinforcement integrated system
Technical field
The utility model relates to the system and the method for operating field of desorb, absorption, and is especially a kind of based on baffle type revolving bed desorbing/absorbing process reinforcement integrated system.
Background technology
Desorb and absorption are unit operations commonly used in the chemical process, sometimes absorb with B liquid for the gas phase component that will from the A mixed liquor, separate sucking-off, often earlier gas phase component is separated from the A mixed liquor by desorber, gas phase component enters the absorption tower again and is absorbed by B liquid, also will absorb operation by multitower adverse current polyphone sometimes and just can finish above-mentioned steps.
The utility model content
The utility model will solve the shortcoming of above-mentioned prior art, provide a kind of based on baffle type revolving bed desorbing/absorbing process reinforcement integrated system, one baffle type revolving bed in desorb with absorb two kinds of unit operations and multitower adverse current polyphone is absorbed operating procedure and be integrated in one.
The utility model solves the technical scheme that its technical problem adopts: this based on baffle type revolving bed desorbing/absorbing process reinforcement integrated system, comprise that mainly multilayer is baffle type revolving bed, liquid charging stock is connected by the baffle type revolving bed lower floor liquid inlet of liquid valve, fluid flowmeter A and multilayer, carrier gas is connected by the baffle type revolving bed lower floor's gas phase inlet of air valve, gas flowmeter and multilayer, and the baffle type revolving bed bottom of multilayer is provided with the bottom liquid outlet that is used to draw stripping liquid; The liquid outlet A in the baffle type revolving bed middle level of multilayer is connected with middle level circulating absorption solution jar, middle level circulating absorption solution jar is connected with the liquid inlet, middle level by liquid pump B, fluid flowmeter E and constitutes a road of conveying, and liquid pump B draws and constitute another road of conveying by fluid flowmeter F shunting; The top on the baffle type revolving bed upper strata of multilayer is provided with supernatant liquid inlet and top gaseous phase outlet, the liquid outlet B in the baffle type revolving bed middle level of multilayer is connected with upper strata circulating absorption solution jar, and upper strata circulating absorption solution jar is connected with the supernatant liquid inlet by liquid pump A, fluid flowmeter B and constitutes a road of conveying; Liquid pump A is connected with the liquid inlet, middle level by fluid flowmeter C and constitutes another road of carrying; Fluid flowmeter D is connected with the supernatant liquid inlet and constitutes the circuit of carrying fresh absorbent.
As preferably, between baffle type revolving bed middle level of multilayer and lower floor, be provided with partition, lower floor is provided with gaseous phase outlet A, and the middle level is provided with gas phase inlet B, and gaseous phase outlet A is connected by condenser and the gas phase B that enters the mouth.
As preferably, described carrier gas is water vapour, inert gas or dry air.
As preferably, described middle level circulating absorption solution jar and upper strata circulating absorption solution jar can have heat exchange structure.
The effect that the utility model is useful is: utilize the characteristics that super gravity field technology volume is little, mass-transfer efficiency is high, can be on a multilayer deflection type overgravity rotary bed device publication number CN1686591 integrated above-mentioned processing step, compare with tower technology, new technology is not only simple to operate, and can reduce equipment volume significantly, thereby realize saving the dreamboat of metals resources, land resource, space resources.The feature of utilizing baffle type revolving bed each the interlayer liquid of multilayer to dam makes in a revolving bed, and every layer liquid phase can be uncorrelated mutually with other layers, therefore can finish steps such as relatively independent desorb, absorption in each layer.
Description of drawings
Fig. 1 is system's connection diagram of embodiment 1 of the present utility model;
Fig. 2 is system's connection diagram of embodiment 2 of the present utility model.
Reference numeral: fluid flowmeter A-1, gas flowmeter-2, multilayer baffle type revolving bed-3, upper strata circulating absorption solution jar-4, liquid pump A-5, fluid flowmeter B-6, fluid flowmeter C-7, fluid flowmeter D-8, middle level circulating absorption solution jar-9, liquid pump B-10, fluid flowmeter E-11, fluid flowmeter F-12, condenser-13; Lower floor liquid inlet-14, lower floor's gas phase inlet-15, bottom liquid outlet-16, liquid inlet, middle level-17, liquid outlet A-18, top gaseous phase outlet-19, liquid outlet B-20, supernatant liquid inlet-21 cuts off-22, gaseous phase outlet A-23, gas phase inlet B-24, liquid valve-25, air valve-26.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
Embodiment 1, as shown in Figure 1, this based on baffle type revolving bed desorbing/absorbing process reinforcement integrated system, mainly comprise multilayer baffle type revolving bed 3, liquid charging stock is connected with the lower floor liquid inlet 14 of multilayer baffle type revolving bed 3 by liquid valve 25, fluid flowmeter A1, carrier gas is connected with lower floor's gas phase inlet 15 of multilayer baffle type revolving bed 3 by air valve 26, gas flowmeter 2, and the bottom of multilayer baffle type revolving bed 3 is provided with the bottom liquid outlet 16 that is used to draw stripping liquid; The liquid outlet A18 in baffle type revolving bed 3 middle levels of multilayer is connected with middle level circulating absorption solution jar 9, middle level circulating absorption solution jar 9 is connected with liquid inlet, middle level 17 by liquid pump B10, fluid flowmeter E11 and constitutes a road of conveying, and liquid pump B10 draws and constitute another road of conveying by fluid flowmeter F12 shunting; The top on baffle type revolving bed 3 upper stratas of multilayer is provided with supernatant liquid inlet 21 and top gaseous phase outlet 19, the liquid outlet B20 in baffle type revolving bed 3 middle levels of multilayer is connected with upper strata circulating absorption solution jar 4, and upper strata circulating absorption solution jar 4 is connected with supernatant liquid inlet 21 by liquid pump A5, fluid flowmeter B6 and constitutes a road of conveying; Liquid pump A5 is connected with liquid inlet, middle level 17 by fluid flowmeter C7 and constitutes another road of carrying; Fluid flowmeter D8 is connected with supernatant liquid inlet 21 and constitutes the circuit of carrying fresh absorbent.
Described carrier gas is water vapour, inert gas or dry air, and described middle level circulating absorption solution jar 9 and upper strata circulating absorption solution jar 4 have heat exchange structure.
Described based on baffle type revolving bed desorbing/absorbing process reinforcement integrated technique, in the lower floor of multilayer baffle type revolving bed 3, carry out the desorb operation, carry out the counter-current absorption operation of two steps in middle level and upper strata, concrete steps are as follows,
1, enters the lower floor liquid inlet 14 of multilayer baffle type revolving bed 3 after liquid charging stock measures by 25 adjustings of liquid valve and fluid flowmeter A1, carrier gas is regulated by air valve 26 and gas flowmeter 2 measures lower floor's gas phase inlet 15 that the back flows into multilayers baffle type revolving bed 3, liquid charging stock and carrier gas are carried out the counter current contacting mass transfer in lower floor's deflector type rotor, stripping liquid is drawn from the bottom liquid outlet 16 of baffle type revolving bed 3 bottoms of multilayer, and the gas phase of finishing the desorb operation in lower floor enters the middle level of multilayer baffle type revolving bed 3;
2, use the secondary cycle absorption liquid tentatively to absorb desorb component in the gas phase in the middle level, after gas phase rises from the lower floor center again from the outer rim in middle level to center flow, and as the liquid phase of the absorbent of secondary cycle from the conveying of middle level circulating absorption solution jar 9 by liquid pump B10, the liquid inlet, middle level 17 that is metered into multilayer baffle type revolving bed 3 through fluid flowmeter E11, the liquid that enters liquid inlet, middle level 17 simultaneously also has a part of liquid that flows down by fluid flowmeter C7 branch from the upper strata circulating absorption solution, two strands of liquid enter the center in middle level jointly, carry out the counter current contacting mass transfer with gas phase, after liquid phase is left the middle level outer rim, after being dammed, the upper end of lower floor leads to middle level circulating absorption solution jar 9; The absorption liquid in middle level is finished the liquid circulation in the middle level, the circulating absorption solution bulk absorption low-boiling-point substance in middle level is to certain concentration, some is shunted by fluid flowmeter F12 metering and draws, and after the gas phase of finishing preliminary absorption is left the center, middle level, enters the upper strata of multilayer baffle type revolving bed 3; When the liquid in the middle level of multilayer baffle type revolving bed 3 need be with extraneous heat exchange, operate by the heat exchange structure of middle level circulating absorption solution jar 9;
3, use one time the desorb component in the circulating absorption solution two steps absorption gas phase on the upper strata, after gas phase rises from the center, middle level again from the outer rim on upper strata to center flow, and the liquid phase of the absorbent that conduct once circulates is from the conveying of upper strata circulating absorption solution jar 4 by liquid pump A5, the supernatant liquid inlet 21 that is metered into multilayer baffle type revolving bed 3 through fluid flowmeter B6, the liquid that enters supernatant liquid inlet 21 simultaneously also has from the fresh absorbent of fluid flowmeter D8 metering, two strands of liquid enter the center on upper strata jointly, carry out the counter current contacting mass transfer with gas phase, after liquid phase is left the upper strata outer rim, the back of being dammed in the upper end in middle level leads to upper strata circulating absorption solution jar 4 by liquid outlet B20, the absorption liquid on upper strata is finished the liquid circulation on the upper strata, and some is shunted by fluid flowmeter C7 metering and causes liquid inlet, middle level 17, finishing gas phases that two steps absorbed leaves and becomes tail gas behind the center, upper strata and leave multilayer baffle type revolving bed 3, when the liquid on upper strata need be with extraneous heat exchange, operate by the heat exchange structure of upper strata circulating absorption solution jar 4.
Embodiment 2: step and embodiment 1 are basic identical, difference from Example 1 is: but when doing carrier gas with water vapour or solvent vapo(u)r, because of gasification latent heat is difficult to realize absorbing operation greatly, or prepare at desorb and the middle step condensation operation that adds of absorption process, then can operate as shown in Figure 2: between the middle level of multilayer baffle type revolving bed 3 and lower floor, be provided with and cut off 22, lower floor is provided with gaseous phase outlet A23, the middle level is provided with gas phase inlet B24, and gaseous phase outlet A23 is connected with gas phase inlet B24 by condenser 13.The middle level and the lower floor of multilayer baffle type revolving bed 3 are directly cut off, and gas phase leads to condenser 13 by gaseous phase outlet A23 after leaving lower floor, and condensate liquid is directly collected, and does not coagulate gas and then enters the middle level outer rim through gas phase inlet B24.
Application example A:
Desorb of process liquid deamination and absorption coupling operation.Process liquid is that ammonia participates in reacted liquid down, and wherein the mass content of ammonia is about 5-10%, and liquid enters next process after will removing ammonia again.Adopt technological process shown in Figure 2, do carrier gas with water vapour, control certain throughput, the temperature that keeps two thermometers of lower floor, can make ammonia content in the stripping liquid reach that 50ppm is following, the ammonia concn of condensate liquid reaches the saturated concentration under this pressure substantially, uncooled gas phase then absorbs to middle level and upper strata water, the liquid circulation amount on control middle level and upper strata, the absorption liquid that the middle level is discharged reaches more than 50% of ammoniacal liquor saturated concentration, and the tail gas ammonia content of discharge is better than the index on common fillers absorption tower.
Application example B:
Desorb during dichloroethanes is produced and absorption coupling operation.In dichloroethanes was produced, tail gas contained dichloroethanes, adopts technological process shown in Figure 2, and the deflector type hypergravity bed of an available two-layer or three-layer type is an absorbent with kerosene, reclaims dichloroethanes by absorption and desorption.Last or on, the middle level finishes the absorption task of kerosene to dichloroethanes, the stingy qualified discharge after the absorption; Contain the rich solution of dichloroethanes, enter lower floor.In lower floor, rich solution with from the steam contact mass transfer of bottom, dichloroethanes is separated to be drawn onto in the steam.The steam that contains dichloroethanes is removed water layer after the condensation layering, thick dichloroethanes goes further purification; Rich solution becomes the very low lean solution kerosene of dichloroethanes content after desorb, turn back to the upper strata and use as absorbent.In one meter of a high less than baffle type revolving bed, realized the absorption and desorption process like this.
Application example C:
Absorption-stabilization system by catalytic cracking desorb and absorption coupling operation.Absorption-stabilization system by catalytic cracking is that rich gas and raw gasoline are separated into dry gas, liquefied gas and stable gasoline.In absorbing-stabilizing system, the effect on absorption tower is with raw gasoline and additional absorbent the liquefied gas in the dry gas to be absorbed; The main effect of desorber is the ethane that removes under heating condition in the gasoline.Process liquid is a raw gasoline, contains low-boiling-point substances such as a certain amount of ethane, and liquid is wanted just can obtain stable gasoline behind the rejecting ethane.Adopt technological process shown in Figure 1, baffle type revolving bed four laminars that change into three-layer type, one or two layers is absorption process from top to bottom, three or four layers is desorption process, and rich gas is carrier gas, enters from three or four interlayers, raw gasoline and additional absorbent enter from the top, after desorb and absorbing, the top obtains the lean gas based on low-boiling-point substance, and the bottom obtains the very low stable gasoline of C2 content.Control certain throughput, the temperature that keeps three or four layers of two thermometer, the stripping liquid that can make the bottom is that the C2 content in the stable gasoline reaches below the normal concentration, the liquid of three or four interlayers can be drawn, return again after the external heat-exchanging heating, the liquid of one or two interlayers also can be drawn, the return condensed again liquid of cooling behind the external heat-exchanging, and stingy and stable gasoline index is better than the index that common fillers absorbs desorber.
In addition to the implementation, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.

Claims (4)

1. one kind based on baffle type revolving bed desorbing/absorbing process reinforcement integrated system, mainly comprises multilayer baffle type revolving bed (3), it is characterized in that:
(1), liquid charging stock is connected by the lower floor liquid inlet (14) of liquid valve (25), fluid flowmeter A (1) baffle type revolving bed with multilayer (3), carrier gas is connected by lower floor's gas phase inlet (15) of air valve (26), gas flowmeter (2) baffle type revolving bed with multilayer (3), and the bottom of multilayer baffle type revolving bed (3) is provided with the bottom liquid outlet (16) that is used to draw stripping liquid;
(2), the liquid outlet A (18) in multilayer baffle type revolving bed (3) middle level is connected with middle level circulating absorption solution jar (9), middle level circulating absorption solution jar (9) is connected with liquid inlet, middle level (17) by liquid pump B (10), fluid flowmeter E (11) and constitutes a road of conveying, and liquid pump B (10) draws and constitute another road of conveying by fluid flowmeter F (12) shunting;
(3), the top on multilayer baffle type revolving bed (3) upper strata is provided with supernatant liquid inlet (21) and top gaseous phase outlet (19), the liquid outlet B (20) in multilayer baffle type revolving bed (3) middle level is connected with upper strata circulating absorption solution jar (4), and upper strata circulating absorption solution jar (4) is connected with supernatant liquid inlet (21) by liquid pump A (5), fluid flowmeter B (6) and constitutes a road of conveying; Liquid pump A (5) is connected with liquid inlet, middle level (17) by fluid flowmeter C (7) and constitutes another road of carrying; Fluid flowmeter D (8) is connected with supernatant liquid inlet (21) and constitutes the circuit of carrying fresh absorbent.
2. according to claim 1 based on baffle type revolving bed desorbing/absorbing process reinforcement integrated system, it is characterized in that: between the middle level of multilayer baffle type revolving bed (3) and lower floor, be provided with partition (22), lower floor is provided with gaseous phase outlet A (23), the middle level is provided with gas phase inlet B (24), and gaseous phase outlet A (23) is connected with gas phase inlet B (24) by condenser (13).
3. according to claim 1 based on baffle type revolving bed desorbing/absorbing process reinforcement integrated system, it is characterized in that: described carrier gas is water vapour, inert gas or dry air.
4. according to claim 1 based on baffle type revolving bed desorbing/absorbing process reinforcement integrated system, it is characterized in that: described middle level circulating absorption solution jar (9) and upper strata circulating absorption solution jar (4) have heat exchange structure.
CN2010202941986U 2010-08-13 2010-08-13 Integrated system based on zigzag rotating bed for strengthening absorption and desorption processes Expired - Fee Related CN201783228U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101912717A (en) * 2010-08-13 2010-12-15 浙江工业大学 Desorbing/absorbing process reinforcement integrated system based on baffle type revolving bed and technique thereof
CN103521160A (en) * 2013-09-29 2014-01-22 北京化工大学 Multifunctional and multipurpose multistage rotary packed bed reactor device and method for performing multiphase and multicomponent reaction by using device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101912717A (en) * 2010-08-13 2010-12-15 浙江工业大学 Desorbing/absorbing process reinforcement integrated system based on baffle type revolving bed and technique thereof
CN101912717B (en) * 2010-08-13 2012-09-05 浙江工业大学 Desorbing/absorbing process reinforcement integrated system based on baffle type revolving bed and technique thereof
CN103521160A (en) * 2013-09-29 2014-01-22 北京化工大学 Multifunctional and multipurpose multistage rotary packed bed reactor device and method for performing multiphase and multicomponent reaction by using device

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Granted publication date: 20110406

Termination date: 20130813