CN109013585B - Compound descaling process of non-stop sea pipe ball throwing and descaling agent - Google Patents
Compound descaling process of non-stop sea pipe ball throwing and descaling agent Download PDFInfo
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- CN109013585B CN109013585B CN201810917412.XA CN201810917412A CN109013585B CN 109013585 B CN109013585 B CN 109013585B CN 201810917412 A CN201810917412 A CN 201810917412A CN 109013585 B CN109013585 B CN 109013585B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
- B08B9/053—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction
- B08B9/057—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction the cleaning devices being entrained discrete elements, e.g. balls, grinding elements, brushes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
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- 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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/24—Cleaning or pickling metallic material with solutions or molten salts with neutral solutions
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Abstract
The invention discloses a compound descaling process for a non-stop sea pipe by ball throwing and a descaling agent, wherein a ball throwing inlet is arranged at one end, close to a crude oil inlet, of the sea pipe, a ball throwing outlet is arranged at one end, close to a crude oil outlet, of the sea pipe, crude oil flows from the crude oil inlet to the crude oil outlet without stopping production, a first pipe cleaner is thrown in from the ball throwing inlet, a second pipe cleaner is thrown in after the first pipe cleaner flows out from the ball throwing outlet, the descaling agent is thrown in from the crude oil inlet when the second pipe cleaner flows to a quarter of the length of the sea pipe, the second pipe cleaner is thrown in after the descaling agent is thrown in for 6-8 hours, the second pipe cleaner, the descaling agent and the second pipe cleaner are thrown in, namely a complete cleaning process, and the complete cleaning process is repeated until the weight of. The invention can effectively remove the dirt accumulated in the sea pipe and synchronously carry out the descaling operation of the sea pipe without stopping production.
Description
Technical Field
The invention relates to a sea pipe descaling process. More specifically, the invention relates to a compound descaling process of non-stop sea pipe ball throwing and a descaling agent, belonging to the technical field of sea pipe descaling.
Background
When the submarine pipe runs for a long time, impurities such as dirt, wax crystals and high molecular organic matters are deposited in the submarine pipe, and the conveying efficiency is influenced. In order to ensure the normal operation of the marine pipe, the inside of the marine pipe needs to be cleaned and descaled periodically. Most of the existing pipe cleaning and descaling processes adopt a single ball-through descaling method (namely, a pipe cleaner is put into a pipeline and takes away dirt in the flowing process) or a chemical agent descaling method (namely, a descaling agent is put into the pipeline and reacts with the dirt to erode the dirt and discharge the dirt), but because a marine pipe is generally long, the amount of the dirt accumulated in the pipeline is large after long-time operation, and viscous impurities such as the oil dirt and the like are attached to the surface of the dirt, a single descaling method is difficult to achieve a good pipe cleaning and descaling effect. In addition, most of the prior pipe cleaning and descaling processes need to be carried out under the condition of production stop, which greatly reduces the conveying efficiency. By adopting the composite descaling process of the ball-through descaling technology and the chemical agent descaling technology, the pipe cleaning descaling effect can be greatly enhanced, the sea pipe descaling operation can be synchronously carried out under the condition of no production stop, and the conveying efficiency is ensured.
Disclosure of Invention
The invention aims to provide a process for descaling by combining sea pipe ball throwing and a descaling agent without stopping production, which can remove dirt accumulated in a sea pipe and synchronously carry out sea pipe descaling operation without stopping production.
In order to realize the purposes and other advantages, the invention provides a compound descaling process for a non-stop sea pipe by throwing balls and a descaling agent, wherein a ball throwing inlet is arranged at one end, close to a crude oil inlet, of the sea pipe, a ball throwing outlet is arranged at one end, close to a crude oil outlet, of the sea pipe, crude oil flows from the crude oil inlet to the crude oil outlet without stopping production, a first pipe cleaner is thrown in from the ball throwing inlet, a second pipe cleaner is thrown in after the first pipe cleaner flows out from the ball throwing outlet, the descaling agent is thrown in from the crude oil inlet when the second pipe cleaner flows to a quarter of the length of the sea pipe, the second pipe cleaner is thrown in after the descaling agent is thrown in for 6-8 hours, the second pipe cleaner, the descaling agent and the second pipe cleaner are thrown in a complete cleaning process, and the complete cleaning process is repeated until the weight of finally discharged;
wherein, first pig is ball polyurethane foam ball, and the diameter ratio of first pig is 1.5% big than the internal diameter of sea pipe, and the second pig includes: the device comprises a pipe cleaner body, a first descaling assembly and a second descaling assembly, wherein the pipe cleaner body comprises an integrally formed cylindrical cleaner body and a conical cleaner head arranged on one end face of the cleaner body, the tip of the cleaner head faces outwards, the size of the end face of the cleaner head is equal to that of the end face of the cleaner body, the outer diameter of the cleaner head is 1.5% larger than the inner diameter of a sea pipe, the first descaling assembly and the second descaling assembly are sequentially arranged on the side wall of the cleaner body along the length direction far away from the cleaner head, the first descaling assembly and the second descaling assembly respectively comprise three steel sheets and three blades, the steel sheets and the blades are of tile-shaped structures, the three steel sheets are uniformly attached along the same section circumference of the cleaner body, a plurality of V-shaped convex blocks are arranged on the surfaces of the steel sheets, the V-shaped included angles of the convex blocks are 30 degrees, the vertexes face the inner wall of the sea pipe, steel wire bristles cover each convex block, the three blades, one of the arc edges of the blades is fixedly connected to the side wall of the device body, the other arc edge of the blades faces the device head, an included angle between the blades and the side wall of the device body is 45 degrees, the projection of the three blades on the end face of the device body is coincided with the projection of the three steel sheets on the same end face of the device body, an annular groove with the depth of 10 percent of the diameter of the device body is formed in the part, located between the blades and the steel sheets, of the side wall of the device body, the projection of the three steel sheets of the first descaling assembly on the end face of the device body and the projection of the three steel sheets of the second descaling assembly on the same end face of the device body are in an annular shape, the material of.
Preferably, the scale remover comprises the following raw materials in parts by weight: 8-10 parts of urotropine, 8-10 parts of D-sodium gluconate, 6-8 parts of liquiritigenin sodium, 8-10 parts of polyepoxysuccinic acid sodium, 6-8 parts of glutamic diacetic acid tetrasodium, 6-8 parts of ethylene diamine tetraacetic acid tetrasodium, 8-10 parts of polyaspartic acid, 4-6 parts of ethylene diamine tetramethylene phosphonic acid sodium, 4-6 parts of bis (1, 6-hexamethylene triamine pentamethylene phosphonic acid), 7-9 parts of fatty alcohol polyoxyethylene ether, 5-7 parts of sodium dodecyl benzene sulfonate, 3-5 parts of dodecylamine, 1-2 parts of lysozyme, 1-2 parts of trehalose, 1-2 parts of glycine, 0.5-1.5 parts of caffeic acid, 5-8 parts of glycerol, 1-2 parts of ammonium persulfate, 1-3 parts of triethanolamine and 140-160 parts of deionized water.
Preferably, the lysozyme is egg white lysozyme.
Preferably, the preparation method of the descaling agent comprises the following steps:
the method comprises the following steps: weighing the urotropine, the D-sodium gluconate and the sodium glycyrrhizinate in parts by weight, mixing, adding beta-cyclodextrin and zirconia balls, then placing the mixture under the conditions that the rotating speed is 600 r/min and the ball-to-material ratio is 5:1 for ball milling for 12 hours, taking the mixture out, sieving the mixture by a 100-mesh sieve, adding deionized water accounting for 10 percent of the total weight of the deionized water for dissolving, then sequentially adding the polyepoxy sodium succinate, the tetrasodium glutamate diacetate and the tetrasodium ethylene diamine tetraacetate in parts by weight, and uniformly stirring to obtain a first mixed solution, wherein the addition amount of the beta-cyclodextrin is 2 times of the weight of the urotropine;
step two: weighing the fatty alcohol-polyoxyethylene ether and the sodium dodecyl benzene sulfonate in parts by weight, mixing, adding deionized water accounting for 20% of the total weight of the deionized water, placing in a water bath environment at 50 ℃, stirring for 30 min under the condition of 1000 r/min, then sequentially adding the first mixed solution prepared in the step one and the dodecylamine in parts by weight, and continuously stirring for 3 h at constant temperature to obtain a second mixed solution;
step three: weighing the trehalose and the glycine in parts by weight, respectively crushing, sieving with a 100-mesh sieve, mixing, adding deionized water accounting for 10% of the total weight of the deionized water, placing in a water bath environment at 100 ℃, stirring for 2 h under the condition of 500 r/min, cooling to room temperature to obtain a protective solution, adjusting the pH of the protective solution to 6.5, simultaneously adding an acetic acid-sodium acetate buffer solution with the pH of 6.5, uniformly stirring, adding the lysozyme in parts by weight to obtain a lysozyme solution, weighing the caffeic acid and the glycerol in parts by weight, mixing, adding deionized water accounting for 10% of the total weight of the deionized water, adding the dissolved caffeic acid into the lysozyme solution, uniformly mixing, placing in a water bath environment at 40 ℃, treating for 1 h by using ultrasonic waves with the power of 300W, stirring and reacting for 24 h under the condition of 2000 r/min, taking out, cooling to room temperature, then filtering with a filter membrane with the aperture of 0.45 mu m to obtain a modified lysozyme solution; wherein, the addition amount of the acetic acid-sodium acetate buffer solution is 5 percent of the weight of the protective solution;
step four: weighing the polyaspartic acid, the ethylene diamine tetramethylene sodium phosphonate and the bis-1, 6-hexamethylene triamine pentamethylene phosphonic acid in parts by weight, mixing, adding the rest deionized water accounting for 50 percent of the total weight of the deionized water, placing in a water bath environment at 50 ℃, stirring for 30 min at the speed of 500 r/min, then adding the second mixed solution prepared in the step two, the ammonium persulfate and the triethanolamine in parts by weight while stirring, stirring for 1 h at the speed of 2000 r/min, cooling to room temperature to obtain a third mixed solution, adjusting the pH value of the third mixed solution to 6.5-7.5, adding phosphate buffer solution with pH of 6.8, stirring uniformly, adding the modified lysozyme solution prepared in the third step, stirring and dispersing for 1 h under the condition of 5000 r/min, and filtering to obtain the scale remover, wherein the addition amount of the phosphate buffer solution is 8% of the weight of the third mixed solution.
Preferably, the zirconia balls in step one have a diameter of 3 mm.
Preferably, the filtration in the fourth step adopts 100-mesh filter cloth for suction filtration.
The invention at least comprises the following beneficial effects:
(1) in the composite descaling process provided by the invention, the ball-through descaling technology and the chemical agent descaling technology are used in a composite way, so that the effect of cleaning and descaling can be greatly enhanced, wherein the descaling agent can react with dirt to loosen and soften the dirt, and then the reacted dirt can be easily taken out under the driving action of a pipe cleaner, so that the descaling effect and the descaling efficiency are greatly enhanced.
(2) In the composite descaling process provided by the invention, the second pipe cleaner can well scrape off the reacted dirt from the inner wall of the marine pipe and smoothly discharge the dirt under the pushing action of the second pipe cleaner, wherein the head of the second pipe cleaner is conical and the tip of the second pipe cleaner faces outwards, so that the resistance of the second pipe cleaner in the advancing process can be reduced, a plurality of V-shaped lugs are arranged on the steel sheets in the first descaling assembly and the second descaling assembly, the dirt on the inner wall of the marine pipe can be well scattered into small pieces of dirt by the steel wire bristles covered on the V-shaped lugs, if large pieces of the dirt after reaction fall off, the marine pipe is easily blocked in the discharging process, the phenomenon of ball blocking is caused, so that the dirt cannot be removed, the small pieces of the scattered dirt can be fully scraped by the design of the blade, so that the dirt is discharged under the pushing action, and the annular groove formed between the blade and the steel sheet can collect and store the dirt scraped by the blade, in addition, when the projection of the three steel sheets of the first descaling assembly on the end face of the vessel body and the projection of the three steel sheets of the second descaling assembly on the same end face of the vessel body are in a circular ring shape, dirt on the whole inner wall of the marine pipe can be scattered and scraped, the dirt on the inner wall of the marine pipe can be fully removed, and the blockage of the marine pipe cannot be caused.
(3) In the composite descaling process provided by the invention, urotropine, D-sodium gluconate and sodium glycyrrhizinate in the descaling agent can strip metal ions such as calcium ions, magnesium ions and iron ions in the scale so as to soften and loosen the scale, and facilitate subsequent descaling, the fatty alcohol-polyoxyethylene ether and the sodium dodecyl benzene sulfonate have wetting and penetrating effects, so that the urotropine, the D-sodium gluconate and the sodium glycyrrhizinate can be promoted to go deep into the scale to fully erode the scale, and the urotropine, the D-sodium gluconate and the sodium glycyrrhizinate have synergistic action, so that the respective scale-eroding effect can be enhanced, the reaction rate and the stripping effect are improved, in addition, the reaction of the urotropine, the D-sodium gluconate and the sodium glycyrrhizinate with the scale is mild, and the reaction is carried out by gradually going deep into the scale, and therefore, the phenomenon that a large piece of scale falls off to block a sea pipe can be avoided. The polyepoxy sodium succinate, the glutamic acid diacetic acid tetrasodium and the ethylene diamine tetraacetic acid tetrasodium can react with water-soluble salt and metal ions formed after dirt is dissolved and corroded to form stable chelate, secondary precipitation is prevented, the descaling effect is reduced, the polyepoxy sodium succinate also has double effects of scale inhibition and corrosion inhibition, new dirt can be prevented from being generated, and corrosion of a descaling agent to a pipeline can be weakened. The polyaspartic acid, the sodium ethylene diamine tetramethylene phosphonate and the bis-1, 6-hexamethylene triamine pentamethylene phosphonic acid are all high-efficiency scale inhibitors, can well prevent the generation of carbonate scale, sulfate scale and oil scale, and particularly have the scale inhibition rate of 100 percent for the carbonate scale and the sulfate scale, so that a large amount of scale can not be deposited in a long time after the sea pipe is subjected to scale removal operation, the service time of the sea pipe is prolonged, the sodium ethylene diamine tetramethylene phosphonate and the bis-1, 6-hexamethylene triamine pentamethylene phosphonic acid can play a synergistic effect with the polyaspartic acid, the scale inhibition effect of the polyaspartic acid is enhanced, and in addition, the components also have a corrosion inhibition effect, and the corrosion of the pipeline caused by the scale remover can be prevented or weakened.
(4) In the composite descaling process provided by the invention, the descaling agent is neutral, cannot corrode a sea pipe, enhances the use safety, and most components (such as polyepoxysuccinic acid, polyaspartic acid and fatty alcohol-polyoxyethylene ether) in the descaling agent have good biodegradability, cannot pollute the environment and is more environment-friendly. Meanwhile, most components in the descaling agent have biodegradability, so that microorganisms, bacteria and the like are easy to breed in the long-term use process, the descaling agent is decayed, the scale dissolving effect of the descaling agent is reduced, the decay and the deterioration of the descaling agent can be prevented by adding lysozyme, the quality of the descaling agent is ensured, and the service life of the descaling agent is prolonged. Because lysozyme receives external environment's influence easily in the use, leads to the enzymatic activity to reduce or lose completely, loses the effect, modifies the lysozyme through modifying, can improve the stability of lysozyme, makes its enzymatic activity keep at higher level. In the modification process, under the guard action of trehalose and glycine, utilize the ultrasonic wave earlier to carry out activation treatment to the lysozyme, then make the lysozyme after the activation and caffeic acid take place to react under the condition of high-speed stirring to modify the lysozyme, the stability of reinforcing lysozyme prevents that the lysozyme from receiving when external environment or other composition influence, and the enzymatic activity reduces or loses, thereby makes the activity of lysozyme keep at higher level.
(5) In the composite descaling process provided by the invention, urotropine, D-sodium gluconate and sodium glycyrrhizinate are main descaling components, the particle size can be effectively reduced by ball milling the urotropine, the D-sodium gluconate and the sodium glycyrrhizinate, the particle size can be better dissolved and dispersed, the uniformity and the stability of the descaling agent can be improved, but a large amount of heat can be generated in the ball milling process, so that the urotropine, the D-sodium gluconate and the sodium glycyrrhizinate are denatured, the molecular structure is changed, the scale dissolving effect is reduced, the beta-cyclodextrin can absorb heat generated in the ball milling process, prevent urotropine, D-sodium gluconate and sodium glycyrrhizinate from denaturation, meanwhile, the beta-cyclodextrin can play a role in lubrication, prevent the urotropine, the D-sodium gluconate and the sodium glycyrrhizinate from massively agglomerating in the ball milling process, so as to ensure the uniformity of the particle sizes of the solid powders of urotropine, D-sodium gluconate and liquiritigenin sodium.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is a front view of a second pig according to one of the solutions of the present invention;
FIG. 2 is a projection view of a first descaling assembly and a second descaling assembly on the end surface of a vessel body according to one technical scheme of the invention;
FIG. 3 is a schematic diagram of descaling according to one embodiment of the present invention.
Detailed Description
The present invention is further described in detail below with reference to the drawings and examples so that those skilled in the art can practice the invention with reference to the description.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
As shown in figures 1 and 2, the invention provides a compound descaling process for a non-stop sea pipe ball throwing and descaling agent, wherein a ball throwing inlet is arranged at one end, close to a crude oil inlet, of a sea pipe, a ball throwing outlet is arranged at one end, close to a crude oil outlet, of the sea pipe, crude oil flows from the crude oil inlet to the crude oil outlet without stopping production, a first pipe cleaner is thrown from the ball throwing inlet, after the first pipe cleaner flows out from the ball throwing outlet, the first pipe cleaner flows from the ball throwing inlet to the ball throwing outlet under the drive of crude oil flow power and self pressure power and is used for detecting whether the sea pipe is unblocked, when the first pipe cleaner flows out from the ball throwing outlet, the sea pipe is unblocked, subsequent descaling operation can be carried out, a second pipe cleaner is thrown, when the second pipe cleaner flows to one fourth of the length of the sea pipe, the position of the second pipe cleaner is detected through an electronic descaling instrument, the descaling agent is thrown from the crude oil inlet, after the descaling agent, the descaling agent reacts with the surface dirt, the surface dirt is basically corroded and is softened and easily scraped, a second pipe cleaner is put in again, the softened dirt after reaction can be scraped and discharged, the second pipe cleaner, the descaling agent and the second pipe cleaner are put in again to form a complete cleaning process, and the complete cleaning process is repeated until the weight of the dirt discharged at the last time is less than 3 kg; dirt deposited in the sea pipe can be removed gradually by repeating the cleaning process for a plurality of times, and the sea pipe cannot be blocked;
wherein, first pig is ball polyurethane foam ball, and the diameter ratio of first pig is 1.5% big than the internal diameter of sea pipe, and polyurethane has fine elasticity, enables first pig and passes through the sea pipe smoothly in the condition of interference, and the second pig includes: the pipe cleaner comprises a pipe cleaner body 1, a first descaling component 2 and a second descaling component 3, wherein the pipe cleaner body 1 comprises an integrally formed cylindrical pipe cleaner body 4 and a conical head 5 arranged on one end face of the pipe cleaner body 4, the tip of the head 5 faces outwards, resistance of the second pipe cleaner in the advancing process can be reduced by the design, the size of the end face of the head 5 is equal to that of the end face of the pipe cleaner body 4, the outer diameter of the head is 1.5% larger than the inner diameter of a sea pipe, when the size of the end face of the pipe cleaner body 4 is larger than the inner diameter of the sea pipe, the first descaling component 2 and the second descaling component 3 on the pipe cleaner body 4 can fully scrape dirt, the first descaling component 2 and the second descaling component 3 are sequentially arranged on the side wall of the pipe cleaner body 4 along the length direction far away from the head 5, the first descaling component 2 and the second descaling component 3 respectively comprise three blades 6 and three blades 7, the steel blades 6 and the steel blades 7 are of tile-shaped structures, the three blades 6 are uniformly, the surface of the steel sheet 6 is provided with a plurality of V-shaped convex blocks, the V-shaped included angle of the convex blocks is 30 degrees, the vertex of each convex block faces the inner wall of the marine vessel, each convex block is covered with steel wire brush hair, so that the convex blocks break up dirt on the inner wall of the marine vessel into small pieces of dirt, the marine vessel is prevented from being blocked in the flowing process after large pieces of dirt fall off, three blades 7 are uniformly distributed along the same section circumference of the vessel body 4 and are positioned on one side of the steel sheet 6 away from the head 5, the blades 7 can scrape off the dirt on the inner wall of the marine vessel to achieve the purpose of descaling, one arc edge of each blade 7 is fixedly connected to the side wall of the vessel body 4, the other arc edge faces the head 5, the included angle between each blade 7 and the side wall of the vessel body 4 is 45 degrees, the design can reduce the damage of the blades 7 to the inner wall of the marine vessel and prevent the inner wall of the marine vessel from being obviously scratched, the part of the side wall of the device body 4, which is positioned between the blade 7 and the steel sheet 6, is provided with an annular groove with the depth of 10 percent of the diameter of the device body 4, the annular groove can collect and store dirt scraped by the blade 7 and discharge the dirt along with a second pipe cleaner, so that the descaling effect is improved, the projection of the three steel sheets 6 of the first descaling assembly 2 on the end surface of the device body 4 and the projection of the three steel sheets 6 of the second descaling assembly 3 on the same end surface of the device body 4 are annular, the dirt on the whole inner wall of the marine pipe can be scattered and scraped by the design, so that the dirt on the inner wall of the marine pipe is fully removed, the marine pipe cannot be blocked, the pipe cleaner body 1 is made of polyurethane, and the steel sheets 6, the blade 7 and the bump are all made of stainless; polyurethane has good elasticity, can make the second pig fully flow out under the interference condition, and steel sheet 6, blade 7 and lug adopt stainless steel matter can make the dirt fully clear away, improve the scale removal effect.
In this kind of technical scheme, during the use, drop into first pig earlier, treat first pig outflow back, drop into the second pig, and make the arrow head of second pig towards the flow direction of crude oil, treat that the second pig flows to the sea pipe fourth department, drop into the detergent, and drop into the second pig once more, and make the arrow head of second pig towards the flow direction of crude oil, weight until the dirt of discharging at last is less than 3kg, accomplish the pigging scale removal operation, adopt this kind of technical scheme, can fully detach the dirt on the sea pipe inner wall, and the scale removal is effectual, the scale removal is efficient, can also realize the pigging scale removal operation under the incessant production, guarantee conveying efficiency.
< example 1>
The compound descaling process of the non-stop sea pipe ball throwing and the descaling agent specifically comprises the following steps: the sea pipe is provided with a ball throwing inlet at one end close to the crude oil inlet, a ball throwing outlet at one end close to the crude oil outlet, crude oil flows from the crude oil inlet to the crude oil outlet without stopping production, a first pipe cleaner is thrown in from the ball throwing inlet firstly, a second pipe cleaner is thrown in after the first pipe cleaner flows out from the ball throwing outlet, when the second pipe cleaner flows to one fourth of the length of the sea pipe, a scale remover is thrown in from the crude oil inlet, after the scale remover is thrown in for 8 hours, the second pipe cleaner is thrown in again, the second pipe cleaner, the scale remover and the second pipe cleaner are thrown in again, namely, a complete cleaning process is carried out, and the complete cleaning process is repeated until the weight of the scale discharged at the last time is less than.
Wherein the scale remover comprises the following raw materials in parts by weight: 10 parts of urotropine, 10 parts of D-sodium gluconate, 8 parts of liquiritigenin sodium, 10 parts of polyepoxysuccinic acid sodium, 8 parts of glutamic diacetic acid tetrasodium, 7 parts of ethylene diamine tetraacetic acid tetrasodium, 10 parts of polyaspartic acid, 6 parts of ethylene diamine tetramethylene phosphonic acid sodium, 6 parts of bis (1, 6-hexamethylene triamine pentamethylene phosphonic acid), 9 parts of fatty alcohol polyoxyethylene ether, 7 parts of sodium dodecyl benzene sulfonate, 5 parts of dodecylamine, 2 parts of lysozyme, 2 parts of trehalose, 2 parts of glycine, 1.5 parts of caffeic acid, 8 parts of glycerol, 2 parts of ammonium persulfate, 3 parts of triethanolamine and 160 parts of deionized water. The lysozyme is egg white lysozyme.
The preparation method of the scale remover comprises the following steps: weighing the urotropine, the D-sodium gluconate and the sodium glycyrrhizinate in parts by weight, mixing, adding beta-cyclodextrin and zirconia balls with the diameter of 3 mm, then placing the balls at the rotating speed of 600 r/min and the ball-to-material ratio of 5:1 for ball milling for 12 hours, taking the balls out, passing through a 100-mesh screen, then adding deionized water accounting for 10% of the total weight of the deionized water for dissolving, then sequentially adding the polyepoxy sodium succinate, the tetrasodium glutamate diacetate and the tetrasodium ethylene diamine tetraacetate in parts by weight, and uniformly stirring to obtain a first mixed solution, wherein the addition amount of the beta-cyclodextrin is 2 times of the weight of the urotropine; weighing the fatty alcohol-polyoxyethylene ether and the sodium dodecyl benzene sulfonate in parts by weight, mixing, adding deionized water accounting for 20% of the total weight of the deionized water, placing in a water bath environment at 50 ℃, stirring for 30 min under the condition of 1000 r/min, then sequentially adding the first mixed solution and the dodecylamine in parts by weight, and continuing to stir at constant temperature for 3 h to obtain a second mixed solution; weighing the trehalose and the glycine in parts by weight, respectively crushing, sieving with a 100-mesh sieve, mixing, adding deionized water accounting for 10% of the total weight of the deionized water, placing in a water bath environment at 100 ℃, stirring for 2 h under the condition of 500 r/min, cooling to room temperature to obtain a protective solution, adjusting the pH of the protective solution to 6.5, simultaneously adding an acetic acid-sodium acetate buffer solution with the pH of 6.5, uniformly stirring, adding the lysozyme in parts by weight to obtain a lysozyme solution, weighing the caffeic acid and the glycerol in parts by weight, mixing, adding deionized water accounting for 10% of the total weight of the deionized water, adding the dissolved caffeic acid into the lysozyme solution, uniformly mixing, placing in a water bath environment at 40 ℃, treating for 1 h by using ultrasonic waves with the power of 300W, stirring and reacting for 24 h under the condition of 2000 r/min, taking out, cooling to room temperature, then filtering with a filter membrane with the aperture of 0.45 mu m to obtain a modified lysozyme solution; wherein, the addition amount of the acetic acid-sodium acetate buffer solution is 5 percent of the weight of the protective solution; weighing the polyaspartic acid, the ethylene diamine tetramethylene sodium phosphonate and the bis-1, 6-hexamethylene triamine pentamethylene phosphonic acid in parts by weight, mixing, adding the rest deionized water accounting for 50 percent of the total weight of the deionized water, placing in a water bath environment at 50 ℃, stirring for 30 min at 500 r/min, sequentially adding the second mixed solution, ammonium persulfate and triethanolamine in parts by weight while stirring, stirring for 1 h at 2000 r/min, cooling to room temperature to obtain a third mixed solution, adjusting the pH of the third mixed solution to 7.0, adding phosphate buffer solution with pH of 6.8, stirring, adding modified lysozyme solution, stirring and dispersing for 1 h under the condition of 5000 r/min, and performing suction filtration by adopting a 100-mesh filter cloth to obtain the scale remover, wherein the addition amount of the phosphate buffer solution is 8% of the weight of the third mixed solution.
< example 2>
The compound descaling process of the non-stop sea pipe ball throwing and the descaling agent specifically comprises the following steps: the sea pipe is provided with a ball throwing inlet at one end close to the crude oil inlet, a ball throwing outlet at one end close to the crude oil outlet, crude oil flows from the crude oil inlet to the crude oil outlet without stopping production, a first pipe cleaner is thrown in from the ball throwing inlet firstly, a second pipe cleaner is thrown in after the first pipe cleaner flows out from the ball throwing outlet, when the second pipe cleaner flows to one fourth of the length of the sea pipe, a scale remover is thrown in from the crude oil inlet, after the scale remover is thrown in for 6 hours, the second pipe cleaner is thrown in again, the second pipe cleaner, the scale remover and the second pipe cleaner are thrown in again, namely, a complete cleaning process is carried out, and the complete cleaning process is repeated until the weight of the scale discharged at the last time is less than.
Wherein the scale remover comprises the following raw materials in parts by weight: 8 parts of urotropine, 8 parts of D-sodium gluconate, 6 parts of liquiritigenin sodium, 9 parts of polyepoxysuccinic acid sodium, 7 parts of glutamic acid diacetate tetrasodium, 8 parts of ethylene diamine tetraacetic acid tetrasodium, 9 parts of polyaspartic acid, 4 parts of ethylene diamine tetramethylene phosphonic acid sodium, 4 parts of bis (1, 6-hexamethylene triamine pentamethylene phosphonic acid), 8 parts of fatty alcohol polyoxyethylene ether, 6 parts of sodium dodecyl benzene sulfonate, 4 parts of dodecylamine, 1.5 parts of lysozyme, 1.5 parts of trehalose, 1.5 parts of glycine, 1 part of caffeic acid, 6 parts of glycerol, 1.5 parts of ammonium persulfate, 2 parts of triethanolamine and 140 parts of deionized water. The lysozyme is egg white lysozyme.
The preparation method of the scale remover comprises the following steps: weighing the urotropine, the D-sodium gluconate and the sodium glycyrrhizinate in parts by weight, mixing, adding beta-cyclodextrin and zirconia balls with the diameter of 3 mm, then placing the balls at the rotating speed of 600 r/min and the ball-to-material ratio of 5:1 for ball milling for 12 hours, taking the balls out, passing through a 100-mesh screen, then adding deionized water accounting for 10% of the total weight of the deionized water for dissolving, then sequentially adding the polyepoxy sodium succinate, the tetrasodium glutamate diacetate and the tetrasodium ethylene diamine tetraacetate in parts by weight, and uniformly stirring to obtain a first mixed solution, wherein the addition amount of the beta-cyclodextrin is 2 times of the weight of the urotropine; weighing the fatty alcohol-polyoxyethylene ether and the sodium dodecyl benzene sulfonate in parts by weight, mixing, adding deionized water accounting for 20% of the total weight of the deionized water, placing in a water bath environment at 50 ℃, stirring for 30 min under the condition of 1000 r/min, then sequentially adding the first mixed solution and the dodecylamine in parts by weight, and continuing to stir at constant temperature for 3 h to obtain a second mixed solution; weighing the trehalose and the glycine in parts by weight, respectively crushing, sieving with a 100-mesh sieve, mixing, adding deionized water accounting for 10% of the total weight of the deionized water, placing in a water bath environment at 100 ℃, stirring for 2 h under the condition of 500 r/min, cooling to room temperature to obtain a protective solution, adjusting the pH of the protective solution to 6.5, simultaneously adding an acetic acid-sodium acetate buffer solution with the pH of 6.5, uniformly stirring, adding the lysozyme in parts by weight to obtain a lysozyme solution, weighing the caffeic acid and the glycerol in parts by weight, mixing, adding deionized water accounting for 10% of the total weight of the deionized water, adding the dissolved caffeic acid into the lysozyme solution, uniformly mixing, placing in a water bath environment at 40 ℃, treating for 1 h by using ultrasonic waves with the power of 300W, stirring and reacting for 24 h under the condition of 2000 r/min, taking out, cooling to room temperature, then filtering with a filter membrane with the aperture of 0.45 mu m to obtain a modified lysozyme solution; wherein, the addition amount of the acetic acid-sodium acetate buffer solution is 5 percent of the weight of the protective solution; weighing the polyaspartic acid, the ethylene diamine tetramethylene sodium phosphonate and the bis-1, 6-hexamethylene triamine pentamethylene phosphonic acid in parts by weight, mixing, adding the rest deionized water accounting for 50 percent of the total weight of the deionized water, placing in a water bath environment at 50 ℃, stirring for 30 min at 500 r/min, sequentially adding the second mixed solution, ammonium persulfate and triethanolamine in parts by weight while stirring, stirring for 1 h at 2000 r/min, cooling to room temperature to obtain a third mixed solution, adjusting the pH of the third mixed solution to 7.5, adding phosphate buffer solution with pH of 6.8, stirring, adding modified lysozyme solution, stirring and dispersing for 1 h under the condition of 5000 r/min, and performing suction filtration by adopting a 100-mesh filter cloth to obtain the scale remover, wherein the addition amount of the phosphate buffer solution is 8% of the weight of the third mixed solution.
< example 3>
The compound descaling process of the non-stop sea pipe ball throwing and the descaling agent specifically comprises the following steps: the sea pipe is provided with a ball throwing inlet at one end close to the crude oil inlet, a ball throwing outlet at one end close to the crude oil outlet, crude oil flows from the crude oil inlet to the crude oil outlet without stopping production, a first pipe cleaner is thrown in from the ball throwing inlet firstly, a second pipe cleaner is thrown in after the first pipe cleaner flows out from the ball throwing outlet, when the second pipe cleaner flows to one fourth of the length of the sea pipe, a scale remover is thrown in from the crude oil inlet, after the scale remover is thrown in for 7 hours, the second pipe cleaner is thrown in again, the second pipe cleaner, the scale remover and the second pipe cleaner are thrown in again, namely, a complete cleaning process is carried out, and the complete cleaning process is repeated until the weight of the scale discharged at the last time is less than.
Wherein the scale remover comprises the following raw materials in parts by weight: 9 parts of urotropine, 9 parts of sodium D-gluconate, 7 parts of liquiritigenin sodium, 8 parts of polyepoxysuccinic acid sodium, 6 parts of glutamic diacetic acid tetrasodium, 6 parts of ethylene diamine tetraacetic acid tetrasodium, 8 parts of polyaspartic acid, 5 parts of ethylene diamine tetramethylene phosphonic acid sodium, 5 parts of bis (1, 6-hexamethylene triamine pentamethylene phosphonic acid), 7 parts of fatty alcohol polyoxyethylene ether, 5 parts of sodium dodecyl benzene sulfonate, 3 parts of dodecylamine, 1 part of lysozyme, 1 part of trehalose, 1 part of glycine, 0.5 part of caffeic acid, 5 parts of glycerol, 1 part of ammonium persulfate, 1 part of triethanolamine and 150 parts of deionized water. The lysozyme is egg white lysozyme.
The preparation method of the scale remover comprises the following steps: weighing the urotropine, the D-sodium gluconate and the sodium glycyrrhizinate in parts by weight, mixing, adding beta-cyclodextrin and zirconia balls with the diameter of 3 mm, then placing the balls at the rotating speed of 600 r/min and the ball-to-material ratio of 5:1 for ball milling for 12 hours, taking the balls out, passing through a 100-mesh screen, then adding deionized water accounting for 10% of the total weight of the deionized water for dissolving, then sequentially adding the polyepoxy sodium succinate, the tetrasodium glutamate diacetate and the tetrasodium ethylene diamine tetraacetate in parts by weight, and uniformly stirring to obtain a first mixed solution, wherein the addition amount of the beta-cyclodextrin is 2 times of the weight of the urotropine; weighing the fatty alcohol-polyoxyethylene ether and the sodium dodecyl benzene sulfonate in parts by weight, mixing, adding deionized water accounting for 20% of the total weight of the deionized water, placing in a water bath environment at 50 ℃, stirring for 30 min under the condition of 1000 r/min, then sequentially adding the first mixed solution and the dodecylamine in parts by weight, and continuing to stir at constant temperature for 3 h to obtain a second mixed solution; weighing the trehalose and the glycine in parts by weight, respectively crushing, sieving with a 100-mesh sieve, mixing, adding deionized water accounting for 10% of the total weight of the deionized water, placing in a water bath environment at 100 ℃, stirring for 2 h under the condition of 500 r/min, cooling to room temperature to obtain a protective solution, adjusting the pH of the protective solution to 6.5, simultaneously adding an acetic acid-sodium acetate buffer solution with the pH of 6.5, uniformly stirring, adding the lysozyme in parts by weight to obtain a lysozyme solution, weighing the caffeic acid and the glycerol in parts by weight, mixing, adding deionized water accounting for 10% of the total weight of the deionized water, adding the dissolved caffeic acid into the lysozyme solution, uniformly mixing, placing in a water bath environment at 40 ℃, treating for 1 h by using ultrasonic waves with the power of 300W, stirring and reacting for 24 h under the condition of 2000 r/min, taking out, cooling to room temperature, then filtering with a filter membrane with the aperture of 0.45 mu m to obtain a modified lysozyme solution; wherein, the addition amount of the acetic acid-sodium acetate buffer solution is 5 percent of the weight of the protective solution; weighing the polyaspartic acid, the ethylene diamine tetramethylene sodium phosphonate and the bis-1, 6-hexamethylene triamine pentamethylene phosphonic acid in parts by weight, mixing, adding the rest deionized water accounting for 50 percent of the total weight of the deionized water, placing in a water bath environment at 50 ℃, stirring for 30 min at 500 r/min, sequentially adding the second mixed solution, ammonium persulfate and triethanolamine in parts by weight while stirring, stirring for 1 h at 2000 r/min, cooling to room temperature to obtain a third mixed solution, adjusting the pH of the third mixed solution to 6.5, adding phosphate buffer solution with pH of 6.8, stirring, adding modified lysozyme solution, stirring and dispersing for 1 h under the condition of 5000 r/min, and performing suction filtration by adopting a 100-mesh filter cloth to obtain the scale remover, wherein the addition amount of the phosphate buffer solution is 8% of the weight of the third mixed solution.
To illustrate the effects of the present invention, the inventors provide comparative experiments as follows:
< comparative example 1>
The process for removing scale by using the compound of the sea pipe ball throwing and the scale remover without stopping production is the same as that in the embodiment 1, and the difference is that: the preparation process of the scale remover does not add beta-cyclodextrin, and other technological processes and parameters are completely the same.
< comparative example 2>
The process for removing scale by using the compound of the sea pipe ball throwing and the scale remover without stopping production is the same as that in the embodiment 1, and the difference is that: trehalose, glycine, caffeic acid and glycerol are not added in the preparation process of the scale remover, lysozyme is directly added, modification treatment is not carried out on the lysozyme, and other technological processes and parameters are completely the same.
The method for evaluating the descaling effect of the composite descaling process comprises the following steps: selecting 5 sections of the sea pipe sections with equal dirt weight and basically consistent dirt composition and dirt distribution, keeping the length of each section of the sea pipe consistent, and keeping the flow velocity of crude oil equal, respectively adopting the composite descaling processes of examples 1-3 and comparative examples 1-2 to perform a pipe cleaning descaling test on the 5 sections of the sea pipes, detecting the thickness of the dirt in each section of the sea pipe before and after the test, calculating the dirt weight according to the dirt thickness, and calculating the descaling rate (%).
The method for evaluating the corrosion degree of the composite descaling process on the pipeline comprises the following steps: weighing a stainless steel test piece by adopting a hanging piece loss method, putting the stainless steel test piece into the scale remover prepared in the examples 1-3 and the comparative examples 1-2, soaking for a preset time, taking out the test piece, cleaning, drying and weighing, and calculating the surface area, the weight loss amount and the corrosion rate of the test piece according to the following calculation formula:
corrosion rate = testWeight loss of tablet X106 /(surface area of test piece. times. soaking time)
Wherein, the weight loss of the test piece is g; surface area of test piece-mm2(ii) a Soaking time-h; corrosion rate-g/(m)2·h)。
The method for evaluating the influence of the composite descaling process on the subsequent dehydration of crude oil comprises the following steps: weighing 6 parts of the same crude oil, wherein the mass of each part of crude oil is equal, adding a demulsifier and a defoamer with the same mass into each part of crude oil, respectively adding the descaling agents prepared in the examples 1-3 and the comparative examples 1-2 into 5 parts of crude oil, wherein the addition amount of the descaling agents is 10% of the mass of the crude oil, taking the rest 1 part of crude oil as a blank sample, adding deionized water with the same mass as the descaling agents into the blank sample, performing a crude oil demulsification dehydration test at 60 ℃, and counting the dehydration amount (ml) of the examples 1-3, the comparative examples 1-2 and the blank sample at 30 min, 60 min and 120 min respectively.
According to statistics, the descaling effects of the examples 1 to 3 and the comparative examples 1 to 2 are shown in the following table 1, the corrosion rates of the descaling agents on the test pieces in the examples 1 to 3 and the comparative examples 1 to 2 are shown in the following table 2, and the dehydration amounts of the examples 1 to 3, the comparative examples 1 to 2 and the blank samples are shown in the following table 3:
[ Table 1]
[ Table 2]
[ Table 3]
As can be seen from the above table 1, the descaling rates of the embodiments 1 to 3 are all above 90%, which is mainly because the dirt in the sea pipe becomes soft after reacting with the descaling agent, and the dirt gradually eroded by the descaling agent is cellular, so that when the second pipe cleaner passes through, the eroded dirt is easily removedScraping and removing are shown in FIG. 3 (scale removal schematic diagram) and then discharging are carried out, so that an ideal scale removal effect is obtained, the composite scale removal process of the embodiments 1 to 3 has a good scale removal effect on the scale deposited in the marine pipe, and as can be seen from the table 2, the corrosion rates of the embodiments 1 to 3 on the test piece are all less than 0.4 g/(m) m2H) far below the national primary standard of 3-5 g/(m)2H) corrosion rate, which indicates that the corrosion degree of examples 1 to 3 to the test piece is very small and negligible, and also indirectly indicates that the corrosion degree of examples 1 to 3 to the pipeline is very small and negligible, as can be seen from table 3 above, compared with the blank sample, the dehydration amount of examples 1 to 3 is increased to a certain extent, which indicates that examples 1 to 3 do not have adverse effect on the subsequent dehydration of crude oil, but can properly promote the dehydration of crude oil, so that the composite descaling process provided by examples 1 to 3 has good descaling effect, does not cause obvious corrosion to the pipeline, and does not have adverse effect on the subsequent dehydration of crude oil, wherein example 1 is the best example.
Compared with the embodiment 1, the sea pipe ball throwing and scale remover compound scale removal process without stopping production is the same with the difference that: beta-cyclodextrin is not added in the preparation process of the scale remover, and other technological processes and parameters are completely the same. As can be seen from table 1 above, the scale removal rate of comparative example 1 is significantly reduced compared to that of example 1, which indicates that the scale removal effect of comparative example 1 is much lower than that of example 1, mainly because: the molecular structure of the scale remover is changed due to the denaturation of urotropine, D-sodium gluconate and sodium glycyrrhizinate caused by a large amount of heat generated in the ball milling process, so that the scale dissolving effect of the scale remover is reduced, the beta-cyclodextrin can absorb the heat generated in the ball milling process to prevent the urotropine, the D-sodium gluconate and the sodium glycyrrhizinate from being denatured, and the beta-cyclodextrin can play a lubricating role to prevent the urotropine, the D-sodium gluconate and the sodium glycyrrhizinate from massively agglomerating in the ball milling process to ensure the uniformity of the particle sizes of the solid powders of the urotropine, the D-sodium gluconate and the sodium glycyrrhizinate.
Compared with the embodiment 1, the sea pipe ball throwing and scale remover compound scale removal process without stopping production is the same as the comparative example 2, except that: trehalose, glycine, caffeic acid and glycerol are not added in the preparation process of the scale remover, lysozyme is directly added, modification treatment is not carried out on the lysozyme, and other technological processes and parameters are completely the same. As can be seen from table 1 above, the scale removal rate of comparative example 2 is much lower than that of example 1 compared to example 1, which indicates that the scale removal effect of comparative example 2 is much lower than that of example 1, mainly because: the lysozyme is easily influenced by the external environment or other components of the detergent in the using process, so that the enzyme activity is reduced or completely lost and loses the effect, and the lysozyme is modified and modified, so that the stability of the lysozyme can be improved, and the enzyme activity of the lysozyme is kept at a higher level. In the modification process, under the guard action of trehalose and glycine, utilize the ultrasonic wave earlier to carry out activation treatment to the lysozyme, then make the lysozyme after the activation and caffeic acid take place the reaction under the condition of high-speed stirring to modify the lysozyme, strengthen the stability of lysozyme, when preventing that the lysozyme from receiving external environment or other composition influences, the enzyme activity reduces or loses, thereby makes the activity of lysozyme keep at higher level, prevents that the detergent is rotten, guarantees the quality of detergent.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein but only by the illustrations and examples shown and described without departing from the general concepts defined by the claims and their equivalents.
Claims (6)
1. The method is characterized in that a ball throwing inlet is arranged at one end, close to a crude oil inlet, of a sea pipe, a ball throwing outlet is arranged at one end, close to a crude oil outlet, of the sea pipe, crude oil flows from the crude oil inlet to the crude oil outlet without stopping production, a first pipe cleaner is thrown in from the ball throwing inlet, a second pipe cleaner is thrown in after the first pipe cleaner flows out of the ball throwing outlet, a scale remover is thrown in from the crude oil inlet when the second pipe cleaner flows to a quarter of the length of the sea pipe, the second pipe cleaner is thrown in after the scale remover is thrown in for 6-8 hours, the second pipe cleaner, the scale remover and the second pipe cleaner are thrown in one complete cleaning process, and the complete cleaning process is repeated until the weight of discharged scale at the last time is less than 3 kg;
wherein, first pig is ball polyurethane foam ball, and the diameter ratio of first pig is 1.5% big than the internal diameter of sea pipe, and the second pig includes: the device comprises a pipe cleaner body, a first descaling assembly and a second descaling assembly, wherein the pipe cleaner body comprises an integrally formed cylindrical cleaner body and a conical cleaner head arranged on one end face of the cleaner body, the tip of the cleaner head faces outwards, the size of the end face of the cleaner head is equal to that of the end face of the cleaner body, the outer diameter of the cleaner head is 1.5% larger than the inner diameter of a sea pipe, the first descaling assembly and the second descaling assembly are sequentially arranged on the side wall of the cleaner body along the length direction far away from the cleaner head, the first descaling assembly and the second descaling assembly respectively comprise three steel sheets and three blades, the steel sheets and the blades are of tile-shaped structures, the three steel sheets are uniformly attached along the same section circumference of the cleaner body, a plurality of V-shaped convex blocks are arranged on the surfaces of the steel sheets, the V-shaped included angles of the convex blocks are 30 degrees, the vertexes face the inner wall of the sea pipe, steel wire bristles cover each convex block, the three blades, one of the arc edges of the blades is fixedly connected to the side wall of the device body, the other arc edge of the blades faces the device head, an included angle between the blades and the side wall of the device body is 45 degrees, the projection of the three blades on the end face of the device body is coincided with the projection of the three steel sheets on the same end face of the device body, an annular groove with the depth of 10 percent of the diameter of the device body is formed in the part, located between the blades and the steel sheets, of the side wall of the device body, the projection of the three steel sheets of the first descaling assembly on the end face of the device body and the projection of the three steel sheets of the second descaling assembly on the same end face of the device body are in an annular shape, the material of.
2. The non-stop sea pipe pitching and scale remover composite descaling process of claim 1, wherein the scale remover comprises the following raw materials in parts by weight: 8-10 parts of urotropine, 8-10 parts of D-sodium gluconate, 6-8 parts of liquiritigenin sodium, 8-10 parts of polyepoxysuccinic acid sodium, 6-8 parts of glutamic diacetic acid tetrasodium, 6-8 parts of ethylene diamine tetraacetic acid tetrasodium, 8-10 parts of polyaspartic acid, 4-6 parts of ethylene diamine tetramethylene phosphonic acid sodium, 4-6 parts of bis (1, 6-hexamethylene triamine pentamethylene phosphonic acid), 7-9 parts of fatty alcohol polyoxyethylene ether, 5-7 parts of sodium dodecyl benzene sulfonate, 3-5 parts of dodecylamine, 1-2 parts of lysozyme, 1-2 parts of trehalose, 1-2 parts of glycine, 0.5-1.5 parts of caffeic acid, 5-8 parts of glycerol, 1-2 parts of ammonium persulfate, 1-3 parts of triethanolamine and 140-160 parts of deionized water.
3. The non-stop sea pipe pitching and scale removing agent composite scale removing process as claimed in claim 2, wherein the lysozyme is egg white lysozyme.
4. The non-stop sea pipe pitching and scale remover composite descaling process according to claim 2, wherein the preparation method of the scale remover comprises the following steps:
the method comprises the following steps: weighing the urotropine, the D-sodium gluconate and the sodium glycyrrhizinate in parts by weight, mixing, adding beta-cyclodextrin and zirconia balls, then placing the mixture under the conditions that the rotating speed is 600 r/min and the ball-to-material ratio is 5:1 for ball milling for 12 hours, taking the mixture out, sieving the mixture by a 100-mesh sieve, adding deionized water accounting for 10 percent of the total weight of the deionized water for dissolving, then sequentially adding the polyepoxy sodium succinate, the tetrasodium glutamate diacetate and the tetrasodium ethylene diamine tetraacetate in parts by weight, and uniformly stirring to obtain a first mixed solution, wherein the addition amount of the beta-cyclodextrin is 2 times of the weight of the urotropine;
step two: weighing the fatty alcohol-polyoxyethylene ether and the sodium dodecyl benzene sulfonate in parts by weight, mixing, adding deionized water accounting for 20% of the total weight of the deionized water, placing in a water bath environment at 50 ℃, stirring for 30 min under the condition of 1000 r/min, then sequentially adding the first mixed solution prepared in the step one and the dodecylamine in parts by weight, and continuously stirring for 3 h at constant temperature to obtain a second mixed solution;
step three: weighing the trehalose and the glycine in parts by weight, respectively crushing, sieving with a 100-mesh sieve, mixing, adding deionized water accounting for 10% of the total weight of the deionized water, placing in a water bath environment at 100 ℃, stirring for 2 h under the condition of 500 r/min, cooling to room temperature to obtain a protective solution, adjusting the pH of the protective solution to 6.5, simultaneously adding an acetic acid-sodium acetate buffer solution with the pH of 6.5, uniformly stirring, adding the lysozyme in parts by weight to obtain a lysozyme solution, weighing the caffeic acid and the glycerol in parts by weight, mixing, adding deionized water accounting for 10% of the total weight of the deionized water, adding the dissolved caffeic acid into the lysozyme solution, uniformly mixing, placing in a water bath environment at 40 ℃, treating for 1 h by using ultrasonic waves with the power of 300W, stirring and reacting for 24 h under the condition of 2000 r/min, taking out, cooling to room temperature, then filtering with a filter membrane with the aperture of 0.45 mu m to obtain a modified lysozyme solution; wherein, the addition amount of the acetic acid-sodium acetate buffer solution is 5 percent of the weight of the protective solution;
step four: weighing the polyaspartic acid, the ethylene diamine tetramethylene sodium phosphonate and the bis-1, 6-hexamethylene triamine pentamethylene phosphonic acid in parts by weight, mixing, adding the rest deionized water accounting for 50 percent of the total weight of the deionized water, placing in a water bath environment at 50 ℃, stirring for 30 min at the speed of 500 r/min, then adding the second mixed solution prepared in the step two, the ammonium persulfate and the triethanolamine in parts by weight while stirring, stirring for 1 h at the speed of 2000 r/min, cooling to room temperature to obtain a third mixed solution, adjusting the pH value of the third mixed solution to 6.5-7.5, adding phosphate buffer solution with pH of 6.8, stirring uniformly, adding the modified lysozyme solution prepared in the third step, stirring and dispersing for 1 h under the condition of 5000 r/min, and filtering to obtain the scale remover, wherein the addition amount of the phosphate buffer solution is 8% of the weight of the third mixed solution.
5. The process for the non-stop production of sea-pipe with the compound descaling agent as claimed in claim 4, wherein the zirconia balls in the first step have a diameter of 3 mm.
6. The process for removing scale by combining sea pipe pitching and scale remover without stopping production as claimed in claim 4, wherein in the fourth step, 100 mesh filter cloth is adopted for filtration.
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2018
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Inventor after: Gu Haitao Inventor after: Guo Xiaojun Inventor after: Chen Xiuwen Inventor after: Huang Deming Inventor after: Liu Qing Inventor after: Li Ze Inventor before: Gu Haitao Inventor before: Guo Xiaojun Inventor before: Chen Xiuwen Inventor before: Liu Qing Inventor before: Sun Guanning Inventor before: Li Ze Inventor before: Li Pengyue Inventor before: Huang Deming |
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