Candle type filtering system for decoloring amine liquid

Abstract

The utility model discloses a candle type filtering system for decoloring amine liquid, and relates to the technical field of amine liquid purification, in particular to the candle type filtering system for decoloring the amine liquid, which comprises a base, a candle type filter, a stirring tank, an automatic feeding machine, an activated carbon placing barrel, an amine liquid feeding pump, an amine liquid inflow pipe and a nitrogen pipe, the amine liquid is conveyed into the stirring tank through the amine liquid inflow pipe, the powdered activated carbon and the amine liquid are stirred and mixed evenly through the stirring tank, and the amine liquid is decolored and purified through the activated carbon; the mixed solution is conveyed to a candle filter through an amine liquid feeding pump to be filtered, activated carbon is intercepted by the candle filter, it is ensured that filtrate is clear, and powdered activated carbon is intercepted on a filter element of the candle filter to form a filter cake; high-pressure nitrogen is conveyed into the candle filter through the nitrogen pipe, the high-pressure nitrogen is used for purging a filter material of the candle filter, and a filter cake falls off from the filter material, so that the cleanness of the filter material is ensured, and the filter material is prevented from losing efficacy due to accumulation of powdered activated carbon.

Description

TECHNICAL FIELD

[0001] The utility model relates to amine liquid purification technical field, concretely is used for amine liquid decolorization candle type filter system. BACKGROUND

[0002] The impurity composition is caused by oxidation degradation and raw material gas entrainment during the recycling of amine liquid, such as heat stable salt HSS, corrosion product (Fe (OH) 3, FeS), oil slick (C5+ above heavy hydrocarbon component), degradation product (formate, acetate, oxalate, etc.), pigment, etc. In addition, the existence of pigment makes amine liquid change from light yellow to red brown, black or even purple, which seriously affects the appearance and clarity of amine liquid, influences the use of subsequent amine liquid purification equipment, and makes the owner doubt the purification effect of amine liquid purification equipment.

[0003] The powder activated carbon has strong adsorption decolorization capacity due to its excellent pore structure (having developed mesoporous structure) and huge specific surface area. In addition, the powder activated carbon can also adsorb and remove oil slick and part of iron ions in amine liquid. Although the powder activated carbon has significant decolorization effect, how to separate the saturated powder activated carbon from amine liquid is a difficult problem. In the published Chinese patent application, publication number: 201621102429.2, patent name: a filter purification device for decolorization and oil removal of deteriorated amine liquid, the prior art uses powder activated carbon with excellent adsorption effect as adsorbent, which can realize the purposes of amine liquid decolorization, oil removal and filtration at the same time, so that the amine liquid is purified; the candle type filter element surface is covered with filter cloth with sufficient filtration precision (≥500 mesh) to recover the used powder activated carbon, which can effectively intercept activated carbon and ensure the clarity of filtrate.

[0004] Although the prior art can solve the above problems, the prior art has certain limitations in specific implementation process. Since the particle size of the powder activated carbon is small, the powder activated carbon is intercepted on the surface of the filter material during the filtration process, forming a filter cake; with the increase of the thickness of the filter cake layer, the filtration resistance increases, and the filter element or filter bag needs to be replaced; and frequent replacement of filter material needs to increase a large amount of labor intensity and increase the consumption cost of filter material. UTILITY MODEL CONTENT

[0005] (I) technical problem solved

[0006] In view of the deficiencies of the prior art, the utility model provides a candle type filter system for amine liquid decolorization, which solves the problems raised in the above background technology.

[0007] (II) technical scheme

[0008] In order to achieve the above object, the utility model discloses a candle type filter system for amine liquid decoloration, including base, candle type filter, agitator tank, automatic feeding machine, activated carbon placing barrel, amine liquid feed pump, amine liquid inflow pipe, nitrogen pipe, the candle type filter, agitator tank, activated carbon placing barrel, amine liquid feed pump are all fixedly installed on the base, the automatic feeding machine is fixedly installed above the agitator tank, the feed pipe end of automatic feeding machine communicates with the inside of activated carbon placing barrel, and the discharge end of automatic feeding machine communicates with the inside of agitator tank, the middle part of amine liquid inflow pipe communicates with the bottom of agitator tank, and the outflow end of amine liquid inflow pipe communicates with candle type filter, and amine liquid feed pump is arranged on amine liquid inflow pipe, the bottom of candle type filter communicates with agitator tank through residual liquid pipe, and the outflow end of nitrogen pipe communicates with agitator tank and candle type filter respectively, a plurality of fifth pipes that communicate with it are fixedly installed on the lateral wall of candle type filter, and the end, away from candle type filter, of each fifth pipe is fixedly installed with amine liquid outflow pipe, and each fifth pipe communicates with amine liquid outflow pipe, high pressure nitrogen gas flows and is transported in nitrogen pipe, and high pressure nitrogen gas blows candle type filter in filter material, and makes the filter cake on filter material fall off.

[0009] Optionally, a gas exhaust pipe that communicates with the inside of the agitator tank is fixedly installed on the agitator tank, and an agitator tank bottom valve is fixedly installed at the bottom port of the agitator tank, and the middle part of the amine liquid inflow pipe communicates with the agitator tank through the agitator tank bottom valve.

[0010] Optionally, an activated carbon feed pipe that communicates with the activated carbon placing barrel is fixedly installed on the activated carbon placing barrel.

[0011] Optionally, a deslagging valve is fixedly installed on the bottom of the candle type filter, and a collecting valve is arranged on each fifth pipe.

[0012] Optionally, one outflow end of the nitrogen pipe communicates with the amine liquid outflow pipe, each fifth pipe and a fourth pipe through the fourth pipe.

[0013] Optionally, another outflow end of the nitrogen pipe is fixedly installed with a second pipe that communicates with the second pipe, and the two ends of the second pipe respectively communicate with the agitator tank and the candle type filter.

[0014] Optionally, a third pipe that communicates with the second pipe is fixedly installed on the second pipe, and the end, away from the second pipe, of the third pipe respectively communicates with the fourth pipe, the amine liquid outflow pipe and each fifth pipe.

[0015] (Three) beneficial effects

[0016] The utility model provides a candle type filter system for amine liquid decoloration has the following beneficial effects:

[0017] The candle filter system for decoloring amine liquid, the powder activated carbon in the barrel is conveyed into the stirring tank by the automatic feeding machine, the amine liquid is conveyed into the stirring tank through the amine liquid inflow pipe, the powder activated carbon is stirred and mixed with the amine liquid by the stirring tank, and the amine liquid is decolorized and purified by the activated carbon; the mixed solution is conveyed to the candle filter for filtration through the amine liquid feeding pump, the activated carbon is intercepted by the candle filter, the filtrate is ensured to be clear, and the powder activated carbon is intercepted on the filter core of the candle filter to form filter cake; high-pressure nitrogen is conveyed into the candle filter through the nitrogen pipe, the filter material of the candle filter is purged by the high-pressure nitrogen, the filter cake is separated from the filter material, the cleanliness of the filter material is ensured, and the filter material is prevented from being invalid due to the accumulation of the powder activated carbon. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by the provided drawings without creative labor for those skilled in the art.

[0019] Fig. 1 It is a schematic diagram of the three-dimensional structure of the candle filter system for decoloring amine liquid of the present application.

[0020] Fig. 2 It is a schematic diagram of the pipeline connection structure of the candle filter system for decoloring amine liquid of the present application.

[0021] Fig. 3 It is a schematic diagram of the pipeline connection structure of the stirring tank in the candle filter system for decoloring amine liquid of the present application.

[0022] Fig. 4 It is a schematic diagram of the pipeline connection structure of the candle filter in the candle filter system for decoloring amine liquid of the present application.

[0023] In the figure: 1, amine liquid inflow pipe; 2, activated carbon feeding pipe; 3, gas exhaust pipe; 4, amine liquid outflow pipe; 5, nitrogen pipe; 6, instrument air component; 7, stirring tank; 8, candle filter; 9, automatic feeding machine; 10, activated carbon placing barrel; 11, amine liquid feeding pump; 12, residue discharge valve; 13, residual liquid pipe; 14, second pipeline; 15, third pipeline; 16, fourth pipeline; 17, fifth pipeline; 18, positive pressure explosion-proof cabinet; 19, base. DETAILED DESCRIPTION

[0024] The technical solutions of the present application will be described clearly and completely in combination with the drawings. In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting the device or element indicated or implied to have a specific orientation, structure and operation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and "third" are only for descriptive purposes and cannot be understood as indicating or implying.

[0025] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection" and "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication between two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments.

[0026] Please refer to Figs. 1 to 4 The present application provides a technical scheme: a candle filter system for amine liquid decolorization, comprising a base 19, a candle filter 8, a stirring tank 7, an automatic feeding machine 9, an activated carbon placing barrel 10, an amine liquid feeding pump 11, an amine liquid inflow pipe 1, and a nitrogen pipe 5. The candle filter 8, the stirring tank 7, the activated carbon placing barrel 10 and the amine liquid feeding pump 11 are fixedly installed on the base 19. The automatic feeding machine 9 is fixedly installed above the stirring tank 7.

[0027] Among them, the candle filter 8, the stirring tank 7, the automatic feeding machine 9, the activated carbon placing barrel 10 and the amine liquid feeding pump 11 are fixedly installed on the base 19 in a pry-mounted manner. The amine liquid inflow pipe 1 is used for conveying amine liquid. The activated carbon placing barrel 10 is used for containing powdered activated carbon. The automatic feeding machine 9 is used for conveying the powdered activated carbon in the activated carbon placing barrel 10 into the stirring tank 7. The stirring tank 7 is used for mixing and stirring the powdered activated carbon and the amine liquid. The candle filter 8 is used for filtering the amine liquid mixed with the powdered activated carbon. The nitrogen pipe 5 is used for conveying high-pressure nitrogen into the candle filter 8.

[0028] The feeding pipe end of the automatic feeding machine 9 is in communication with the inside of the activated carbon placing barrel 10, and the discharging end of the automatic feeding machine 9 is in communication with the inside of the stirring tank 7. The middle part of the amine liquid inflow pipe 1 is in communication with the bottom of the stirring tank 7, the outflow end of the amine liquid inflow pipe 1 is in communication with the candle filter 8, and the amine liquid feeding pump 11 is arranged on the amine liquid inflow pipe 1. The bottom of the candle filter 8 is in communication with the stirring tank 7 through the residual liquid pipe 13, the outflow end of the nitrogen pipe 5 is in communication with the stirring tank 7 and the candle filter 8 respectively, a plurality of fifth pipes 17 in communication with the candle filter 8 are fixedly installed on the side wall of the candle filter 8, the amine liquid outflow pipe 4 is fixedly installed at the end away from the candle filter 8 of each fifth pipe 17, and each fifth pipe 17 is in communication with the amine liquid outflow pipe 4.

[0029] The high-pressure nitrogen gas flowing in the nitrogen pipe 5 blows the filter material in the candle filter 8, so that the filter cake on the filter material falls off.

[0030] Specifically, the activated carbon placing barrel 10 is used for placing the powder activated carbon, the automatic feeding machine 9 is used for conveying the powder activated carbon in the activated carbon placing barrel 10 to the stirring tank 7, the amine liquid inflow pipe 1 is used for conveying the amine liquid to the stirring tank 7, the stirring tank 7 is used for stirring and mixing the powder activated carbon and the amine liquid, and the activated carbon is used for decolorizing and purifying the amine liquid. The amine liquid feeding pump 11 is used for conveying the mixed solution to the candle filter 8 for filtration, the candle filter 8 is used for retaining the powder activated carbon to ensure that the filtrate is clear, and the powder activated carbon is retained on the filter core of the candle filter 8 to form the filter cake. The nitrogen pipe 5 is used for conveying the high-pressure nitrogen gas to the inside of the candle filter 8, the high-pressure nitrogen gas is used for purging the filter material of the candle filter 8, so that the filter cake falls off from the filter material, thereby ensuring the cleanliness of the filter material and avoiding the failure of the filter material due to the accumulation of the powder activated carbon. The amine liquid filtered by the candle filter 8 flows through the fifth pipe 17 and the amine liquid outflow pipe 4 in sequence and is discharged.

[0031] Specifically, the stirring tank 7 is fixedly installed with the gas emptying pipe 3 in communication with the inside of the stirring tank 7, the bottom end of the stirring tank 7 is fixedly installed with the stirring tank bottom valve, and the middle part of the amine liquid inflow pipe 1 is in communication with the stirring tank 7 through the stirring tank bottom valve.

[0032] Specifically, the gas emptying pipe 3 is used for discharging the gas in the stirring tank 7, that is, for gas emptying. The amine liquid flows into the stirring tank 7 through the amine liquid inflow pipe 1, the automatic feeding machine 9 conveys the powder activated carbon in the activated carbon placing barrel 10 to the stirring tank 7, so as to add the powder activated carbon to the amine liquid, the stirring tank 7 stirs and mixes the amine liquid and the powder activated carbon, and the powder activated carbon decolorizes the amine liquid.

[0033] Further specifically, the activated carbon placing barrel 10 is fixedly installed with the activated carbon feeding pipe 2 in communication with the activated carbon placing barrel 10.

[0034] Specifically, the activated carbon feeding pipe 2 is used for adding the powder activated carbon to the activated carbon placing barrel 10.

[0035] Specifically, the bottom of the candle filter 8 is fixedly installed with a residue discharge valve 12. Each fifth pipeline 17 is provided with a collection valve.

[0036] The mixed solution of the powder activated carbon and the amine liquid in the stirring tank 7 flows out through the stirring tank bottom valve, and flows into the candle filter 8 through the amine liquid inflow pipe 1. The amine liquid feeding pump 11 is used to transport the mixed solution of the powder activated carbon and the amine liquid, and to strengthen the flowability of the mixed solution. The candle filter 8 filters the mixed solution of the powder activated carbon and the amine liquid. The filtered powder activated carbon is discharged through the port where the residue discharge valve 12 is located. The purified amine liquid is discharged through the fifth pipeline 17 and the amine liquid outflow pipe 4. The residual amine liquid in the candle filter 8 is returned to the stirring tank 7 through the residual liquid pipe 13.

[0037] Specifically, one outflow end of the nitrogen pipe 5 is communicated with the amine liquid outflow pipe 4 and each fifth pipeline 17 through the fourth pipeline 16.

[0038] The high-pressure nitrogen gas flows into the candle filter 8 through the nitrogen pipe 5, the fourth pipeline 16 and the fifth pipeline 17 in sequence, and reversely sweeps the filter core of the candle filter 8. The powder activated carbon trapped on the filter core is blown off by the high-pressure nitrogen gas, that is, the powder activated carbon is separated from the filter core under the influence of the high-pressure nitrogen gas. After the powder activated carbon is separated from the filter core, it falls to the bottom of the candle filter 8, and is discharged from the candle filter 8 through the port where the residue discharge valve 12 is located.

[0039] Specifically, the other outflow end of the nitrogen pipe 5 is fixedly installed with the second pipeline 14, and the two are communicated. The two ends of the second pipeline 14 are communicated with the stirring tank 7 and the candle filter 8, respectively.

[0040] The high-pressure nitrogen gas flows into the candle filter 8 or the stirring tank 7 through the nitrogen pipe 5 and the second pipeline 14 in sequence. After the high-pressure nitrogen gas enters the candle filter 8, it is positively swept to the filter core, so that the powder activated carbon is separated from the filter core. After the high-pressure nitrogen gas enters the stirring tank 7, it is swept to the inner wall of the stirring tank 7, so as to clean the inner wall of the stirring tank 7.

[0041] Further specifically, the second pipeline 14 is fixedly installed with the third pipeline 15, and the two are communicated. The end of the third pipeline 15 away from the second pipeline 14 is communicated with the fourth pipeline 16, the amine liquid outflow pipe 4 and each fifth pipeline 17, respectively.

[0042] When the filter core of the candle filter 8 is back-flushed by high-pressure nitrogen, the high-pressure nitrogen in the candle filter 8 flows to the third pipeline 15 through the second pipeline 14, flows back to each fifth pipeline 17 through the third pipeline 15, and re-enters the filter core of the candle filter 8 through each fifth pipeline 17, so that the nitrogen is recycled.

[0043] The instrument air component 6 is fixedly installed on the base 19, and the instrument air component 6 comprises the positive pressure explosion-proof cabinet 18. The instrument air component 6 is used for conveying instrument air to each instrument device in the candle filter system for amine liquid decoloration of the utility model. The instrument air component 6 can specifically adopt an instrument air system.

[0044] The above is only a preferred specific implementation manner of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, and all should be covered in the protection scope of the utility model.

Claims

1. A candle filtration system for decolorizing amine solutions, characterized in that: The system includes a base (19), a candle filter (8), a mixing tank (7), an automatic feeder (9), an activated carbon storage tank (10), an amine feed pump (11), an amine inflow pipe (1), and a nitrogen pipe (5). The candle filter (8), the mixing tank (7), the activated carbon storage tank (10), and the amine feed pump (11) are all fixedly installed on the base (19), and the automatic feeder (9) is fixedly installed above the mixing tank (7). The feed pipe end of the automatic feeder (9) is connected to the inside of the activated carbon storage tank (10), and the discharge end of the automatic feeder (9) is connected to the inside of the mixing tank (7); the middle part of the amine liquid inflow pipe (1) is connected to the bottom of the mixing tank (7), the outlet end of the amine liquid inflow pipe (1) is connected to the candle filter (8), and the amine liquid feed pump (11) is installed on the amine liquid inflow pipe (1); the bottom of the candle filter (8) is connected to the mixing tank (7) through the residual liquid pipe (13), the outlet end of the nitrogen pipe (5) is connected to the mixing tank (7) and the candle filter (8) respectively, and multiple fifth pipes (17) connected to it are fixedly installed on the side wall of the candle filter (8), and an amine liquid outlet pipe (4) is fixedly installed at the end of each fifth pipe (17) away from the candle filter (8), and each fifth pipe (17) is connected to the amine liquid outlet pipe (4); High-pressure nitrogen flows inside the nitrogen pipe (5), and the high-pressure nitrogen blows the filter media inside the candle filter (8), causing the filter cake on the filter media to fall off.

2. The candle filtration system for amine decolorization according to claim 1, characterized in that: The mixing tank (7) is fixedly installed with a gas vent pipe (3) communicating with its interior. A mixing tank bottom valve is fixedly installed at the bottom port of the mixing tank (7). The middle part of the amine liquid inflow pipe (1) is connected to the mixing tank (7) through the mixing tank bottom valve.

3. The candle filtration system for amine decolorization according to claim 2, characterized in that: An activated carbon feed pipe (2) is fixedly installed on the activated carbon storage container (10) and the two are connected.

4. The candle filtration system for amine decolorization according to claim 1, characterized in that: A slag discharge valve (12) is fixedly installed at the bottom of the candle filter (8); a collection valve is provided on each of the fifth pipes (17).

5. The candle filtration system for amine decolorization according to claim 1, characterized in that: One outlet of the nitrogen pipe (5) is connected to the amine liquid outlet pipe (4) and each of the fifth pipes (17) via the fourth pipe (16).

6. The candle filtration system for amine decolorization according to claim 1, characterized in that: The other outlet end of the nitrogen pipe (5) is fixedly installed with a second pipe (14) and the two are connected. The two ends of the second pipe (14) are connected to the stirring tank (7) and the candle filter (8) respectively.

7. The candle filtration system for amine decolorization according to claim 6, characterized in that: A third pipe (15) is fixedly installed on the second pipe (14) and the two are connected. The end of the third pipe (15) away from the second pipe (14) is connected to the fourth pipe (16), the amine liquid outflow pipe (4), and each of the fifth pipes (17).

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