CN112048722A - Preparation method and preparation system of special corrosion inhibitor for metal equipment - Google Patents
Preparation method and preparation system of special corrosion inhibitor for metal equipment Download PDFInfo
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- CN112048722A CN112048722A CN202010903927.1A CN202010903927A CN112048722A CN 112048722 A CN112048722 A CN 112048722A CN 202010903927 A CN202010903927 A CN 202010903927A CN 112048722 A CN112048722 A CN 112048722A
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- 230000007797 corrosion Effects 0.000 title claims abstract description 54
- 238000005260 corrosion Methods 0.000 title claims abstract description 54
- 239000003112 inhibitor Substances 0.000 title claims abstract description 43
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 31
- 239000002184 metal Substances 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title claims abstract description 31
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims abstract description 69
- 238000003756 stirring Methods 0.000 claims abstract description 55
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims abstract description 27
- INQOMBQAUSQDDS-UHFFFAOYSA-N iodomethane Chemical compound IC INQOMBQAUSQDDS-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000007787 solid Substances 0.000 claims abstract description 13
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000005406 washing Methods 0.000 claims abstract description 7
- BTXXTMOWISPQSJ-UHFFFAOYSA-N 4,4,4-trifluorobutan-2-one Chemical compound CC(=O)CC(F)(F)F BTXXTMOWISPQSJ-UHFFFAOYSA-N 0.000 claims abstract description 5
- BQACOLQNOUYJCE-FYZZASKESA-N Abietic acid Natural products CC(C)C1=CC2=CC[C@]3(C)[C@](C)(CCC[C@@]3(C)C(=O)O)[C@H]2CC1 BQACOLQNOUYJCE-FYZZASKESA-N 0.000 claims abstract description 5
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910000027 potassium carbonate Inorganic materials 0.000 claims abstract description 5
- 235000015320 potassium carbonate Nutrition 0.000 claims abstract description 5
- 238000002390 rotary evaporation Methods 0.000 claims abstract description 4
- 238000001914 filtration Methods 0.000 claims description 18
- 239000000758 substrate Substances 0.000 claims description 18
- 150000001875 compounds Chemical class 0.000 claims description 17
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 14
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 12
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- 239000012044 organic layer Substances 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 7
- 239000003208 petroleum Substances 0.000 claims description 7
- JLTRXTDYQLMHGR-UHFFFAOYSA-N trimethylaluminium Chemical compound C[Al](C)C JLTRXTDYQLMHGR-UHFFFAOYSA-N 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 5
- KLSJWNVTNUYHDU-UHFFFAOYSA-N Amitrole Chemical group NC1=NC=NN1 KLSJWNVTNUYHDU-UHFFFAOYSA-N 0.000 claims description 4
- 229910021591 Copper(I) chloride Inorganic materials 0.000 claims description 4
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical class [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 4
- OXBLHERUFWYNTN-UHFFFAOYSA-M copper(I) chloride Chemical compound [Cu]Cl OXBLHERUFWYNTN-UHFFFAOYSA-M 0.000 claims description 4
- 229940045803 cuprous chloride Drugs 0.000 claims description 4
- 239000000706 filtrate Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000000741 silica gel Substances 0.000 claims description 4
- 229910002027 silica gel Inorganic materials 0.000 claims description 4
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 4
- 235000011152 sodium sulphate Nutrition 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 238000010992 reflux Methods 0.000 claims description 3
- 238000010898 silica gel chromatography Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 15
- 230000005764 inhibitory process Effects 0.000 abstract description 6
- 231100000053 low toxicity Toxicity 0.000 abstract description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 8
- 229910002092 carbon dioxide Inorganic materials 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000012258 stirred mixture Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
- C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention provides a preparation method and a preparation system of a special corrosion inhibitor for metal equipment, which comprises the following steps: a: dissolving abietic acid and K2CO3 in dimethylformamide, adding methyl iodide (MeI), stirring for 3 hours, and performing TLC spot plate reaction completely; b: performing reduced pressure rotary evaporation to remove MeI, extracting with Ethyl Acetate (EA), concentrating, and washing with water to remove dimethylformamide; the preparation method and the preparation system of the special corrosion inhibitor for the metal equipment have the advantages that the corrosion inhibitor has good corrosion inhibition performance for resisting H2S/CO2 corrosion, simultaneously has good thermal stability, low toxicity and no special pungent smell, the corrosion inhibition rate of the corrosion inhibitor is high and can reach 90%, the filter screen is driven to rotate by the second motor, so that the solid in the mixed liquid in the fixed groove is filtered by the filter screen, the solid falls into the storage box, and the liquid flows into the sliding shell from the filter opening.
Description
Technical Field
The invention relates to the technical field of corrosion inhibitors, in particular to a preparation method and a preparation system of a special corrosion inhibitor for metal equipment.
Background
The corrosion inhibitor is a chemical substance or compound which can prevent or slow down the corrosion of materials when existing in the environment (medium) in a proper concentration and form, so the corrosion inhibitor can also be called a corrosion inhibitor, the dosage of the corrosion inhibitor is very small (0.1-1%), but the effect is obvious, the method for protecting metals is called corrosion inhibitor protection, and the corrosion inhibitor is used for neutral media (water for boilers, circulating cooling water), acidic media (hydrochloric acid for removing scale of boilers, acid leaching solution for removing rust of plated parts before electroplating) and gaseous media (gas phase corrosion inhibitor).
The metal equipment is exposed in the air for a long time and can be corroded by carbon dioxide in the air, and the outer layer of the metal equipment can be damaged by the corrosion of the carbon dioxide for a long time, so that the outer layer of the metal equipment needs to be protected, and a complete management system cannot be formed in the conventional corrosion inhibitor preparation process, so that the filter screen is easily blocked by mixed liquid when the corrosion inhibitor is prepared, and the separation speed of the mixed liquid by the filter screen is influenced.
Therefore, it is necessary to provide a method for preparing a special corrosion inhibitor for metal equipment and a preparation system thereof to solve the above technical problems.
Disclosure of Invention
The invention provides a preparation method and a preparation system of a special corrosion inhibitor for metal equipment, which solve the problem that a filter screen is blocked by mixed liquid easily during preparation of the corrosion inhibitor.
In order to solve the technical problems, the preparation method of the special corrosion inhibitor for the metal equipment provided by the invention comprises the following steps:
a: dissolving abietic acid and K2CO3 in dimethylformamide, adding methyl iodide (MeI), stirring for 3 hours, and performing TLC spot plate reaction completely;
b: performing reduced pressure rotary evaporation to remove MeI, extracting with Ethyl Acetate (EA), concentrating, washing with water to remove dimethylformamide, washing the organic layer with saturated sodium chloride, drying, concentrating, and purifying the rest with 1:10 Ethyl Acetate (EA)/Petroleum Ether (PE) through silica gel column to obtain a first compound of formula;
c: adding ethylenediamine and trimethylaluminum (AlMe3) into toluene at the temperature of 0-10 ℃, uniformly mixing, adding the first compound obtained in the step B, and fully stirring and refluxing for 12 hours;
d: cooling to 0 deg.C, filtering, extracting the filtrate with ethyl acetate, drying the organic layer with sodium sulfate, concentrating, and purifying with silica gel column chromatography (petroleum ether/ethyl acetate 1/1) to obtain a second compound as white solid;
e: and adding the second compound, the DBU residue, the TMG residue, ethanol, acetic acid, water and cuprous chloride into a reaction bottle, heating to react under stirring, controlling the temperature to be 70-75 ℃, and reacting for 1 hour.
The invention provides a preparation system of a special corrosion inhibitor for metal equipment, which comprises the following steps: the device comprises a substrate, wherein a support rod is fixedly connected to the substrate, one end of the support rod is fixedly connected with a stirring cup, a guide pipe is fixedly connected to the stirring cup, a rotary evaporator is fixedly connected to the substrate, a support is fixedly connected to the substrate, a separating funnel is arranged on the support, a stirring barrel is arranged on the substrate, a first motor is fixedly connected to the stirring barrel, a stirring rod is rotatably connected to the inside of the stirring barrel, a timing switch is fixedly connected to the stirring barrel, a filtering device is arranged on the substrate and comprises a fixed shell, and a discharging pipe is fixedly connected to the inside of the fixed shell; the stirring device is fixed inside the fixed shell and comprises a fixed block, a fixed groove is formed in the fixed block, a rotating rod is rotatably connected to the fixed block, a filter screen is fixedly connected to the surface of the rotating rod, a second motor is fixedly connected to the fixed block, a first gear is fixedly connected to the output end of the second motor, a second gear is fixedly connected to one end of the rotating rod, and a plurality of filter openings are formed in the fixed block; the collecting device, the collecting device set up in the inside of set casing, the collecting device includes the containing box, it is connected with the dwang to rotate on the containing box, the drum has been cup jointed on the surface of dwang to the one end fixedly connected with sliding tray of dwang, reset spring has been cup jointed on the surface of dwang, the fixed surface of drum is connected with L shape pole, the constant head tank has been seted up on the surface of containing box, the fixed surface of set casing is connected with the joint board, the joint groove has been seted up on the joint board.
Preferably, one end of the flow guide pipe is fixedly connected with the rotary evaporator.
Preferably, the first motor and one end of the stirring rod are both provided with gears, and the gear on the first motor is meshed with the gear on the stirring rod.
Preferably, the inside of the fixed shell is slidably connected with a sliding shell, and the sliding shell is located at the bottom of the fixed block.
Preferably, the fixed shell is located on the base plate, and one end of the discharging pipe is located above the fixed block.
Preferably, the fixing block is fixed inside the fixing case, and the filter screen is slidably connected with the inner surface of the fixing groove.
Preferably, the surface of the first gear is meshed with the surface of the second gear, and the plurality of filtering openings are uniformly distributed inside the fixed block.
Preferably, the containing box is connected with the fixed shell in a sliding mode, and the return spring is located on the left side of the sliding disc.
Preferably, a clamping rod is fixedly connected to the rotating rod, and one end of the clamping rod is matched with the clamping groove.
Compared with the related technology, the preparation method and the preparation system of the special corrosion inhibitor for the metal equipment have the following beneficial effects:
the invention provides a preparation method and a preparation system of a special corrosion inhibitor for metal equipment, the corrosion inhibitor has good corrosion inhibition performance for resisting H2S/CO2 corrosion, has good thermal stability, low toxicity and no special pungent smell, has high corrosion inhibition rate which can reach 90 percent, and drives a filter screen to rotate through a second motor, so that the filter screen filters solid in mixed liquid in a fixed groove, the solid falls into a storage box, and liquid flows into a sliding shell from a filter opening.
Drawings
FIG. 1 is a schematic structural diagram of a system for preparing a special corrosion inhibitor for metal equipment according to a preferred embodiment of the present invention;
FIG. 2 is a top view of the mounting block shown in FIG. 1;
FIG. 3 is an enlarged view of portion A of FIG. 1;
fig. 4 is an enlarged schematic view of a portion B shown in fig. 1.
Reference numbers in the figures: 1. the device comprises a base plate, 2, a support rod, 3, a stirring cup, 4, a guide pipe, 5, a rotary evaporator, 6, a support, 7, a separating funnel, 8, a stirring barrel, 9, a first motor, 10, a stirring rod, 11, a timing switch, 12, a filtering device, 121, a fixed shell, 122, a blanking pipe, 13, a stirring device, 131, a fixed block, 132, a fixed groove, 133, a rotating rod, 134, a filtering net, 135, a second motor, 136, a first gear, 137, a second gear, 138, a filtering opening, 14, a collecting device, 141, a storage box, 142, a rotating rod, 143, a cylinder, 144, a sliding disc, 145, a reset spring, 146, an L-shaped rod, 147, a positioning groove, 148, a clamping plate, 149, a clamping groove, 15, a sliding shell, 16 and a clamping rod.
Detailed Description
The invention is further described with reference to the following figures and embodiments.
The preparation method of the special corrosion inhibitor for the metal equipment comprises the following steps:
a: dissolving abietic acid and K2CO3 in dimethylformamide, adding methyl iodide (MeI), stirring for 3 hours, and performing TLC spot plate reaction completely;
b: performing reduced pressure rotary evaporation to remove MeI, extracting with Ethyl Acetate (EA), concentrating, washing with water to remove dimethylformamide, washing the organic layer with saturated sodium chloride, drying, concentrating, and purifying the rest with 1:10 Ethyl Acetate (EA)/Petroleum Ether (PE) through silica gel column to obtain a first compound of formula;
c: adding ethylenediamine and trimethylaluminum (AlMe3) into toluene at the temperature of 0-10 ℃, uniformly mixing, adding the first compound obtained in the step B, and fully stirring and refluxing for 12 hours;
d: cooling to 0 deg.C, filtering, extracting the filtrate with ethyl acetate, drying the organic layer with sodium sulfate, concentrating, and purifying with silica gel column chromatography (petroleum ether/ethyl acetate 1/1) to obtain a second compound as white solid;
e: and adding the second compound, the DBU residue, the TMG residue, ethanol, acetic acid, water and cuprous chloride into a reaction bottle, heating to react under stirring, controlling the temperature to be 70-75 ℃, and reacting for 1 hour.
Has the advantages that:
the corrosion inhibitor has good corrosion inhibition performance for resisting H2S/CO2 corrosion, has good thermal stability, low toxicity and no special pungent smell, and has high corrosion inhibition rate which can reach 90%.
Please refer to fig. 1, fig. 2, fig. 3, and fig. 4, wherein fig. 1 is a schematic structural diagram of a system for preparing a special corrosion inhibitor for metal equipment according to a preferred embodiment of the present invention; FIG. 2 is a top view of the mounting block shown in FIG. 1; FIG. 3 is an enlarged view of portion A of FIG. 1; fig. 4 is an enlarged schematic view of a portion B shown in fig. 1. The invention provides a preparation method and a preparation system of a special corrosion inhibitor for metal equipment, which comprises the following steps: the device comprises a substrate 1, wherein a support rod 2 is fixedly connected to the substrate 1, one end of the support rod 2 is fixedly connected with a stirring cup 3, a guide pipe 4 is fixedly connected to the stirring cup 3, a rotary evaporator 5 is fixedly connected to the substrate 1, a support 6 is fixedly connected to the substrate 1, a separating funnel 7 is arranged on the support 6, a stirring barrel 8 is arranged on the substrate 1, a first motor 9 is fixedly connected to the stirring barrel 8, a stirring rod 10 is rotatably connected to the inside of the stirring barrel 8, a timing switch 11 is fixedly connected to the stirring barrel 8, a filtering device 12 is arranged on the substrate 1, the filtering device 12 comprises a fixed shell 121, and a blanking pipe 122 is fixedly connected to the inside of the fixed shell 121; the stirring device 13 is fixed inside the fixed shell 121, the stirring device 13 includes a fixed block 131, a fixed groove 132 is formed on the fixed block 131, a rotating rod 133 is rotatably connected to the fixed block 131, a filter screen 134 is fixedly connected to the surface of the rotating rod 133, a second motor 135 is fixedly connected to the fixed block 131, a first gear 136 is fixedly connected to the output end of the second motor 135, a second gear 137 is fixedly connected to one end of the rotating rod 133, and a plurality of filter ports 138 are formed in the fixed block 131; collection device 14, collection device 14 set up in the inside of set casing 121, collection device 14 includes containing box 141, the last rotation of containing box 141 is connected with dwang 142, the surface of dwang 142 has cup jointed drum 143 to the one end fixedly connected with sliding tray 144 of dwang 142, reset spring 145 has been cup jointed on the surface of dwang 142, the fixed surface of drum 143 is connected with L shape pole 146, constant head tank 147 has been seted up on the surface of containing box 141, the fixed surface of set casing 121 is connected with joint board 148, joint groove 149 has been seted up on the joint board 148.
S1: abietic acid, K2CO3, and methyl iodide (MeI) were added to a stirring cup 3, stirred by a stirring rod for three hours, and then a switch on the stirring cup 3 was turned on to flow the stirred mixture into a rotary evaporator 5 through a flow guide tube, thereby removing MEL in the mixture by the rotary evaporator 5.
S2: the mixture was extracted with a separatory funnel 7, then concentrated and washed with water to remove dimethylformamide by an external instrument, the organic layer was washed with saturated sodium chloride, dried and concentrated, and the remaining components were purified with 1:10 Ethyl Acetate (EA)/Petroleum Ether (PE) on a silica gel column to give the first compound of formula.
S3: and adding the first compound into the stirring barrel 8, adding toluene, ethylenediamine and trimethylaluminum into the stirring barrel 8, stirring for 12 hours, controlling the stirring time by a timing switch 11, filtering by a structure on a filtering device 12, extracting the filtrate by ethyl acetate, and drying and concentrating an organic layer by sodium sulfate to obtain a second compound.
S4: and adding the second compound, the DBU residue, the TMG residue, ethanol, acetic acid, water and cuprous chloride into the stirring barrel 8, heating to react under stirring, controlling the temperature to be 70-75 ℃, and timing for 1 hour by a timing switch to obtain the corrosion inhibitor.
And one end of the draft tube 4 is fixedly connected with the rotary evaporator 5.
One ends of the first motor 9 and the stirring rod 10 are both provided with gears, and the gears on the first motor 9 are meshed with the gears on the stirring rod 10.
The rotation of the motor 9 will rotate the stirring rod 10.
A sliding shell 15 is slidably connected to the inside of the fixing shell 121, and the sliding shell 15 is located at the bottom of the fixing block 131.
The sliding housing 15 collects the liquid flowing down the filter port 138.
The fixing shell 121 is located on the base plate 1, and one end of the discharging pipe 122 is located above the fixing block 131.
The down pipe 122 may guide the mixed liquid into the inside of the fixing groove 132.
The fixing block 131 is fixed inside the fixing case 121, and the filter net 134 is slidably coupled to an inner surface of the fixing groove 132.
The surface of the first gear 136 is engaged with the surface of the second gear 137, and the plurality of filtering ports 138 are uniformly distributed inside the fixed block 131.
The rotation of the first gear 136 causes the second gear 137 to rotate.
The receiving box 141 is slidably connected to the fixed case 121, and the return spring 145 is located at the left side of the sliding plate 144.
The return spring 145 returns the pulled cylinder 143.
The rotating rod 142 is fixedly connected with a clamping rod 16, and one end of the clamping rod 16 is matched with the clamping groove 149.
The engagement of the catch lever 16 with the catch groove 149 positions the storage box 141 so that the storage box 141 cannot move rightward.
The working principle of the preparation method and the preparation system of the special corrosion inhibitor for the metal equipment provided by the invention is as follows:
s1: when needs are filtered mixed liquid, will mix liquid and flow into the inside of fixed slot 132 through unloading pipe 122, open second motor 135 by control switch, the output rotation of second motor 135 can drive first gear 136 rotatory, first gear 136 is rotatory can drive second gear 137 rotatory, second gear 137 is rotatory can drive dwang 133 rotatory, the dwang 133 is rotatory can drive the filter screen 134 rotatory, the filter screen 134 is rotatory can be with the inside solid of inflow fixed slot 132 promote to the right, thereby make the solid fall into the inside of containing box 141.
S2: liquid has filtration mouth 138 to flow down, thereby flow in the inside of slip shell 15, and when needs take off containing box 141, stimulate drum 143 to the right, drum 143 moves right and can drive L shape pole 146 and move right, L shape pole 146 moves right and can make the one end of L shape pole 146 no longer with constant head tank 147 joint, thereby rotatory drum 143, the rotation of drum 143 can drive dwang 142 and rotate, dwang 142 rotation can drive joint pole 16 rotatory, joint pole 16 rotation can make joint pole 16 no longer with the joint groove 149 joint, thereby it can take off containing box 141 to pull containing box 141 right, thereby conveniently handle the inside solid of collecting of containing box 141.
Compared with the related technology, the preparation method and the preparation system of the special corrosion inhibitor for the metal equipment have the following beneficial effects:
drive the filter screen 134 rotation through second motor 135 to make filter screen 134 filter the solid in the inside mixed liquid of fixed slot 132, thereby make the solid fall into the inside of receiver 141, and liquid flows in the inside of slip shell 15 by filtration mouth 138, and this device simple structure can separate solid-liquid, and has avoided the solid to plug up filtration mouth 138 and has leaded to the slower problem of filter speed.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A preparation method of a special corrosion inhibitor for metal equipment is characterized by comprising the following steps:
a: dissolving abietic acid and K2CO3 in dimethylformamide, adding methyl iodide (MeI), stirring for 3 hours, and performing TLC spot plate reaction completely;
b: performing reduced pressure rotary evaporation to remove MeI, extracting with Ethyl Acetate (EA), concentrating, washing with water to remove dimethylformamide, washing the organic layer with saturated sodium chloride, drying, concentrating, and purifying the rest with 1:10 Ethyl Acetate (EA)/Petroleum Ether (PE) through silica gel column to obtain a first compound of formula;
c: adding ethylenediamine and trimethylaluminum (AlMe3) into toluene at the temperature of 0-10 ℃, uniformly mixing, adding the first compound obtained in the step B, and fully stirring and refluxing for 12 hours;
d: cooling to 0 deg.C, filtering, extracting the filtrate with ethyl acetate, drying the organic layer with sodium sulfate, concentrating, and purifying with silica gel column chromatography (petroleum ether/ethyl acetate 1/1) to obtain a second compound as white solid;
e: and adding the second compound, the DBU residue, the TMG residue, ethanol, acetic acid, water and cuprous chloride into a reaction bottle, heating to react under stirring, controlling the temperature to be 70-75 ℃, and reacting for 1 hour.
2. A preparation system of a special corrosion inhibitor for metal equipment is characterized by comprising the following components:
the device comprises a substrate, wherein a support rod is fixedly connected to the substrate, one end of the support rod is fixedly connected with a stirring cup, a guide pipe is fixedly connected to the stirring cup, a rotary evaporator is fixedly connected to the substrate, a support is fixedly connected to the substrate, a separating funnel is arranged on the support, a stirring barrel is arranged on the substrate, a first motor is fixedly connected to the stirring barrel, a stirring rod is rotatably connected to the inside of the stirring barrel, a timing switch is fixedly connected to the stirring barrel, a filtering device is arranged on the substrate and comprises a fixed shell, and a discharging pipe is fixedly connected to the inside of the fixed shell;
the stirring device is fixed inside the fixed shell and comprises a fixed block, a fixed groove is formed in the fixed block, a rotating rod is rotatably connected to the fixed block, a filter screen is fixedly connected to the surface of the rotating rod, a second motor is fixedly connected to the fixed block, a first gear is fixedly connected to the output end of the second motor, a second gear is fixedly connected to one end of the rotating rod, and a plurality of filter openings are formed in the fixed block;
the collecting device, the collecting device set up in the inside of set casing, the collecting device includes the containing box, it is connected with the dwang to rotate on the containing box, the drum has been cup jointed on the surface of dwang to the one end fixedly connected with sliding tray of dwang, reset spring has been cup jointed on the surface of dwang, the fixed surface of drum is connected with L shape pole, the constant head tank has been seted up on the surface of containing box, the fixed surface of set casing is connected with the joint board, the joint groove has been seted up on the joint board.
3. The system for preparing the special corrosion inhibitor for the metal equipment as claimed in claim 2, wherein one end of the flow guide pipe is fixedly connected with the rotary evaporator.
4. The special corrosion inhibitor preparation system for metal equipment as claimed in claim 2, wherein the first motor and one end of the stirring rod are both provided with gears, and the gear on the first motor is meshed with the gear on the stirring rod.
5. The system for preparing the special corrosion inhibitor for metal equipment according to claim 2, wherein a sliding shell is slidably connected to the inside of the fixed shell, and the sliding shell is located at the bottom of the fixed block.
6. The system for preparing the special corrosion inhibitor for the metal equipment as claimed in claim 2, wherein the fixed shell is located on the base plate, and one end of the discharging pipe is located above the fixed block.
7. The system for preparing a special corrosion inhibitor for metal equipment as claimed in claim 2, wherein the fixing block is fixed inside the fixing housing, and the filter screen is slidably coupled with an inner surface of the fixing groove.
8. The system for preparing the special corrosion inhibitor for the metal equipment as claimed in claim 2, wherein the surface of the first gear is engaged with the surface of the second gear, and the plurality of filtering ports are uniformly distributed inside the fixing block.
9. The system for preparing a special corrosion inhibitor for metal equipment according to claim 2, wherein the receiving box is slidably connected with the fixed casing, and the return spring is positioned at the left side of the sliding disk.
10. The system for preparing the special corrosion inhibitor for the metal equipment as claimed in claim 2, wherein a clamping rod is fixedly connected to the rotating rod, and one end of the clamping rod is matched with the clamping groove.
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