A method for classifying, collecting and temporarily storing hazardous waste from field oil and gas exploration

Abstract

The present invention relates to the technical field of hazardous waste treatment, and specifically to the technical field of classification number E04H, a method for classified collection and temporary storage of hazardous wastes from field oil and gas exploration, comprising at least the following steps: S1, preparing different containers according to the types of hazardous wastes, the different containers are provided with different distinguishing marks, and the method of setting the distinguishing marks is selected from at least one of labeling, hanging and marking; S2, classifying different hazardous wastes into corresponding different containers and transporting them to a movable box for storage, the movable box is provided with different storage compartments, and different types of hazardous wastes are placed in different storage compartments. In this technical solution, the inventor not only collects and classifies hazardous wastes, but also stores them in different storage spaces during storage, which can improve the safety of hazardous waste storage and the efficiency and convenience during collection, and is also conducive to the subsequent treatment of hazardous wastes.

Description

Technical Field

[0001] The present invention relates to the technical field of hazardous waste treatment, specifically to the technical field classified as E04H, and in particular to a method for classifying, collecting and temporarily storing hazardous waste from field oil and gas exploration. Background Art

[0002] When the exploration team conducts oil and gas exploration drilling in the field, a lot of hazardous waste will be generated, which will cause great pollution to the environment during the drilling process. In the classification and collection of hazardous wastes, the state and the industry have issued relevant technical requirements and specifications for different storage methods and facilities, and have certain requirements for the collection and classification and storage of hazardous wastes. At present, field drilling teams will collect and store hazardous wastes, but in the collection of hazardous wastes, most of them mix different hazardous wastes together for collection; in the storage of hazardous wastes, generally a temporary stacking shed is built directly at the well site, or it is stored in a metal box, specifically different hazardous wastes are mixed together and stacked. The above two methods will cause greater safety hazards and do not meet environmental protection requirements. The existing hazardous waste collection and storage methods cannot meet the oil and gas exploration drilling construction team's classification, timely, convenient, safe and environmentally friendly storage functions for different types of hazardous wastes.

[0003] The patent application number CN201811619422.1 discloses a hazardous waste treatment method based on a mobile treatment platform. The treatment method requires drying the collected waste liquid, and during the drying period, the evaporated liquid, waste gas and solid are independently guided. The treated liquid and gas are detected and judged, and those that meet the standards are discharged. The treatment method is to directly treat the hazardous waste at the location where it is generated. Different treatment equipment needs to be transported to different locations. This collection method is not suitable for hazardous waste collection in field exploration of oil and gas drilling. The patent application number CN201910863235.6 discloses an industrial hazardous waste treatment method and device, which pre-treats the hazardous waste first and then crushes the pre-treated hazardous waste. The treatment method is to store different hazardous wastes together, which will cause safety hazards and bring safety problems.

[0004] There is an urgent need for a method for reasonably classifying, collecting and storing hazardous wastes generated during field oil and gas exploration and drilling operations, as well as a device suitable for the method. Summary of the invention

[0005] A method for collecting and temporarily storing hazardous waste from field oil and gas exploration comprises at least the following steps:

[0006] S1. Prepare different containers according to the types of hazardous wastes, and set different distinguishing marks on the different containers. The method of setting the distinguishing marks is selected from at least one of labeling, hanging and marking;

[0007] S2. Classify different hazardous wastes into corresponding containers and transfer them to a movable box for storage. The movable box is provided with different storage compartments, and different types of hazardous wastes are placed in different storage compartments.

[0008] As a preferred technical solution, when different hazardous wastes are classified into different containers in S2, the hazardous wastes in different containers are weighed by a weighing system so that the weight of the hazardous wastes in the containers meets the storage weight standard.

[0009] As a preferred technical solution, the weighing system includes a weighing module, a data acquisition and transmission module and a control module, and information is fed back to the control module through the data acquisition and transmission module.

[0010] As a preferred technical solution, the interior of the movable box is separated by transverse partitions and longitudinal partitions to form different storage compartments, a weighing system is installed on the transverse partitions and the bottom of the movable box, an alarm system is installed in the movable box, and the control module is connected to the alarm system through signals.

[0011] As a preferred technical solution, the bottom, side walls, transverse partitions and longitudinal partitions of the movable box are coated with an anti-penetration layer.

[0012] As a preferred technical solution, the raw materials for preparing the anti-permeation layer include, by weight, at least 30-60 parts of epoxy resin, 5-18 parts of curing agent, 3-6 parts of reinforcing filler, 1-3 parts of wetting agent, 10-25 parts of diluent, and 0.5-2 parts of adhesion promoter.

[0013] As a preferred technical solution, the epoxy resin includes epoxy resin A and epoxy resin B, the epoxy equivalent of the epoxy resin A is 450-500 g / equivalent, the epoxy equivalent of the epoxy resin B is 180-200 g / equivalent, and the weight ratio between the epoxy resin A and the epoxy resin B is (3-5):1.

[0014] Epoxy resin has good bonding strength and corrosion resistance, and is usually used as the main component of the anti-permeation layer. The inventor found that when using epoxy resin with a smaller epoxy equivalent, the anti-permeation layer obtained by curing has a stronger bonding strength and a larger hardness, and is prone to brittleness and hardness during use. However, when using epoxy resin with a larger epoxy equivalent, the bonding strength of the anti-permeation layer after curing is weaker due to the fewer active groups contained. The inventor found that when epoxy resin A with an epoxy equivalent of 450-500g / equivalent and epoxy resin B with an epoxy equivalent of 180-200 g / equivalent are mixed, the anti-permeation layer obtained by curing has a better bonding strength, and can reduce the brittleness and hardness of the anti-permeation layer after curing, and improve the anti-seepage ability and service life of the anti-permeation layer. The inventor believes that the possible reason is that epoxy resins with different epoxy equivalents are used, so that epoxy resins with different molecular chain lengths and containing different numbers of epoxy groups can form a better body cross-linked structure during curing, while ensuring the bonding strength of the epoxy glue, reducing the brittleness and hardness of the epoxy glue.

[0015] As a preferred technical solution, the curing agent is a mixture of hexamethylenediamine, 2-methylimidazole and polyetheramines, and the mass ratio of the hexamethylenediamine, 2-methylimidazole and polyetheramines is (1-3):1:1.

[0016] As a preferred technical solution, the polyetheramine is selected from at least one of polyetheramine D220, polyetheramine D400 and polyetheramine D2000.

[0017] The inventors found that by using a certain amount of hexamethylenediamine, 2-methylimidazole and a polyetheramine curing agent to compound and cure the epoxy resin, not only can the epoxy resin have a faster curing rate, but also the heat resistance and impact resistance of the overall material can be improved, the epoxy adhesive can be quickly cured at room temperature, and the curing rate and wear resistance can be further improved.

[0018] As a preferred technical solution, the reinforcing filler is selected from at least one of glass fiber, mica powder, silicon dioxide, titanium dioxide and silicon carbide.

[0019] As a preferred technical solution, the reinforcing filler is silicon dioxide.

[0020] The inventors improved the mechanical strength and anti-corrosion performance of the overall anti-permeability layer by adding a certain amount and a certain particle size of silica. The inventors found that when using silica with a smaller particle size, agglomeration will occur, and when using silica with a larger particle size, the compatibility between silica and the adhesive will become relatively poor.

[0021] As a preferred technical solution, the particle size of the silicon dioxide is 30 nm.

[0022] As a preferred technical solution, the wetting agent is fatty alcohol polyoxyethylene ether, and the hydroxyl value of the fatty alcohol polyoxyethylene ether is 130-180 mgKOH / g.

[0023] As a preferred technical solution, the fatty alcohol polyoxyethylene ether includes fatty alcohol polyoxyethylene ether A and fatty alcohol polyoxyethylene ether B, the weight ratio between the fatty alcohol polyoxyethylene ether A and the fatty alcohol polyoxyethylene ether B is (1-3): 1, the hydroxyl value of the fatty alcohol polyoxyethylene ether A is 130-140 mgKOH / g, and the hydroxyl value of the fatty alcohol polyoxyethylene ether B is 170-180 mgKOH / g.

[0024] The inventors found that by adding fatty alcohol polyoxyethylene ethers with different hydroxyl values, not only the wettability and spreadability of the anti-permeation layer on the coating substrate can be improved, but also the dispersion uniformity of silicon dioxide in the overall material can be improved.

[0025] As a preferred technical solution, the diluent is a reactive diluent, and the reactive diluent is propylene oxide phenyl ether.

[0026] However, the inventors found that the anti-permeation layer has poor construction properties during coating. The inventors found that the construction properties and fluidity of the anti-permeation layer can be improved by adding a certain amount of active diluent.

[0027] Beneficial effects:

[0028] (1) In the present technical solution, the inventors not only collect hazardous wastes by classification, but also store them in different storage spaces, which can improve the safety of hazardous waste storage and the efficiency and convenience of collection, and is also conducive to the subsequent treatment of hazardous wastes.

[0029] (2) In this technical solution, the inventor uses different containers to store different hazardous wastes in a classified manner, thereby improving storage safety.

[0030] (3) In the present technical solution, the inventors have improved the recognition of different containers by marking and distinguishing different containers, thus avoiding the mislabeling of different hazardous wastes.

[0031] (4) In the present technical solution, the inventors use a weighing system to weigh the container containing hazardous waste to ensure the safety of the container and the partition.

[0032] (5) In this technical solution, the bottom, side walls, transverse partitions and longitudinal partitions of the movable box are coated with an anti-permeability layer to prevent the hazardous waste from corroding the box and seeping into the ground through the box. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the overall structure of the movable box in Example 1.

[0034] Figure 2 This is a schematic diagram of the effect when a container is installed inside the movable box in Example 1.

[0035] 1- movable box, 2- container, 3- first weighing system, 4- transverse partition, 5- longitudinal partition, 6- second weighing system, 7- double door, 8- escalator, 9- single door, 10- reinforcing rod. DETAILED DESCRIPTION

[0036] Example 1

[0037] This embodiment provides a method for classifying, collecting and temporarily storing hazardous wastes from field oil and gas exploration, including the following steps:

[0038] S1. Prepare different containers 2 according to the types of hazardous waste, and set different distinguishing marks on the different containers, and the method of setting the distinguishing marks is selected from labeling;

[0039] S2. Classify different hazardous wastes into corresponding containers and transport them to a movable box for storage. The movable box is provided with different storage compartments, and different types of hazardous wastes are placed in different storage compartments, such as Figure 1 and Figure 2 As shown, a double door body 7 and a single door body 9 are provided on one side of the movable box 1, and a reinforcing rod 10 is provided on the double door body 7, a movable wheel is provided at the bottom, and an escalator 8 is provided on one side. When different hazardous wastes are classified into different containers 2 in S2, the hazardous wastes in different containers 2 are weighed by a weighing system so that the weight of the hazardous wastes in the container 2 meets the storage weight standard. The weighing system includes a weighing module, a data acquisition and transmission module, and a control module. Different storage compartments are formed inside the movable box 1 by partitions 4 and longitudinal partitions 5. A first weighing system 3 is installed at the bottom of the partition 4, and a second weighing system 6 is installed at the bottom of the movable box 1. An alarm system is installed in the movable box 1. The control module and the alarm system are connected by signals. If the weight of the hazardous waste in the container 2 exceeds the storage weight standard, the information is fed back to the control module through the data acquisition and transmission module, and the alarm system is controlled by the control module to alarm.

[0040] The bottom, side walls, transverse partitions 4 and longitudinal partitions 5 of the movable box 1 are coated with an anti-permeation layer. The raw materials for preparing the anti-permeation layer include, by weight, 30 parts of epoxy resin, 5 parts of curing agent, 3 parts of reinforcing filler, 1 part of wetting agent, 10 parts of diluent and 0.5 parts of adhesion promoter.

[0041] The epoxy resin includes epoxy resin A and epoxy resin B, the epoxy equivalent of epoxy resin A is 450-500 g / equivalent, the epoxy equivalent of epoxy resin B is 180-200 g / equivalent, and the weight ratio between epoxy resin A and epoxy resin B is 4:1. The epoxy resin A was purchased from Changsha Fudakang Chemical Materials Co., Ltd., with the item number: CYD-014U. The epoxy resin B was purchased from Qianguang Chemical, with the item number: QG. The curing agent is a mixture of hexamethylenediamine, 2-methylimidazole and polyetheramines, and the mass ratio of hexamethylenediamine, 2-methylimidazole and polyetheramines is 2:1:1. The polyetheramine is polyetheramine D220. The reinforcing filler is silica, and the particle size of the silica is 30nm. The fatty alcohol polyoxyethylene ether includes fatty alcohol polyoxyethylene ether A and fatty alcohol polyoxyethylene ether B, the weight ratio between the fatty alcohol polyoxyethylene ether A and the fatty alcohol polyoxyethylene ether B is 2:1, the hydroxyl value of the fatty alcohol polyoxyethylene ether A is 130-140 mgKOH / g, and the hydroxyl value of the fatty alcohol polyoxyethylene ether B is 170-180 mgKOH / g. The fatty alcohol polyoxyethylene ether A is purchased from Jiangsu Hai'an Petrochemical Plant, item number: MOA-7, and the fatty alcohol polyoxyethylene ether B is purchased from Jiangsu Hai'an Petrochemical Plant, item number: MOA-3. The active diluent is propylene oxide phenyl ether.

[0042] Example 2

[0043] The difference between this embodiment and embodiment 1 is that the raw materials for preparing the anti-permeation layer include 45 parts of epoxy resin, 11 parts of curing agent, 4 parts of reinforcing filler, 2 parts of wetting agent, 17 parts of diluent, and 1.2 parts of adhesion promoter by weight. The epoxy resin includes epoxy resin A and epoxy resin B, the epoxy equivalent of epoxy resin A is 450-500 g / equivalent, the epoxy equivalent of epoxy resin B is 180-200 g / equivalent, and the weight ratio between epoxy resin A and epoxy resin B is 4:1. The epoxy resin A was purchased from Changsha Fudakang Chemical Materials Co., Ltd., with the article number: CYD-014U. The epoxy resin B was purchased from Qianguang Chemical, with the article number: QG. The curing agent is a mixture of hexamethylenediamine, 2-methylimidazole and polyetheramines, and the mass ratio of hexamethylenediamine, 2-methylimidazole and polyetheramines is 2:1:1. The polyetheramine is polyetheramine D220. The reinforcing filler is silicon dioxide, and the particle size of the silicon dioxide is 30nm. The fatty alcohol polyoxyethylene ether includes fatty alcohol polyoxyethylene ether A and fatty alcohol polyoxyethylene ether B, and the weight ratio between the fatty alcohol polyoxyethylene ether A and the fatty alcohol polyoxyethylene ether B is 2:1, the hydroxyl value of the fatty alcohol polyoxyethylene ether A is 130-140mgKOH / g, and the hydroxyl value of the fatty alcohol polyoxyethylene ether B is 170-180mgKOH / g. The fatty alcohol polyoxyethylene ether A was purchased from Hai'an Petrochemical Plant, Jiangsu Province, with the item number MOA-7, and the fatty alcohol polyoxyethylene ether B was purchased from Hai'an Petrochemical Plant, Jiangsu Province, with the item number MOA-3. The active diluent is propylene oxide phenyl ether.

[0044] Example 3

[0045] The difference between this embodiment and embodiment 1 is that the raw materials for preparing the anti-permeation layer include 60 parts of epoxy resin, 18 parts of curing agent, 6 parts of reinforcing filler, 3 parts of wetting agent, 25 parts of diluent, and 2 parts of adhesion promoter, by weight. The epoxy resin includes epoxy resin A and epoxy resin B, the epoxy equivalent of epoxy resin A is 450-500 g / equivalent, the epoxy equivalent of epoxy resin B is 180-200 g / equivalent, and the weight ratio between epoxy resin A and epoxy resin B is 4:1. The epoxy resin A was purchased from Changsha Fudakang Chemical Materials Co., Ltd., with the article number: CYD-014U. The epoxy resin B was purchased from Qianguang Chemical, with the article number: QG. The curing agent is a mixture of hexamethylenediamine, 2-methylimidazole and polyetheramines, and the mass ratio of hexamethylenediamine, 2-methylimidazole and polyetheramines is 2:1:1. The polyetheramine is polyetheramine D220. The reinforcing filler is silicon dioxide, and the particle size of the silicon dioxide is 30nm. The fatty alcohol polyoxyethylene ether includes fatty alcohol polyoxyethylene ether A and fatty alcohol polyoxyethylene ether B, and the weight ratio between the fatty alcohol polyoxyethylene ether A and the fatty alcohol polyoxyethylene ether B is 2:1, the hydroxyl value of the fatty alcohol polyoxyethylene ether A is 130-140mgKOH / g, and the hydroxyl value of the fatty alcohol polyoxyethylene ether B is 170-180mgKOH / g. The fatty alcohol polyoxyethylene ether A was purchased from Hai'an Petrochemical Plant, Jiangsu Province, with the item number MOA-7, and the fatty alcohol polyoxyethylene ether B was purchased from Hai'an Petrochemical Plant, Jiangsu Province, with the item number MOA-3. The active diluent is propylene oxide phenyl ether.

[0046] Example 4

[0047] The difference between this embodiment and embodiment 1 is that the raw materials for preparing the anti-permeation layer include 60 parts of epoxy resin, 18 parts of curing agent, 6 parts of reinforcing filler, 3 parts of wetting agent, 25 parts of diluent, and 2 parts of adhesion promoter, by weight. The epoxy resin includes epoxy resin A and epoxy resin B, the epoxy equivalent of epoxy resin A is 450-500 g / equivalent, the epoxy equivalent of epoxy resin B is 180-200 g / equivalent, and the weight ratio between epoxy resin A and epoxy resin B is 4:1. The epoxy resin A was purchased from Changsha Fudakang Chemical Materials Co., Ltd., with the article number: CYD-014U. The epoxy resin B was purchased from Qianguang Chemical, with the article number: QG. The curing agent is a mixture of hexamethylenediamine, 2-methylimidazole and polyetheramines, and the mass ratio of hexamethylenediamine, 2-methylimidazole and polyetheramines is 2:1:1. The polyetheramine is polyetheramine D220. The reinforcing filler is silicon dioxide, and the particle size of the silicon dioxide is 100nm. The fatty alcohol polyoxyethylene ether includes fatty alcohol polyoxyethylene ether A and fatty alcohol polyoxyethylene ether B, and the weight ratio between the fatty alcohol polyoxyethylene ether A and the fatty alcohol polyoxyethylene ether B is 2:1, the hydroxyl value of the fatty alcohol polyoxyethylene ether A is 130-140mgKOH / g, and the hydroxyl value of the fatty alcohol polyoxyethylene ether B is 170-180mgKOH / g. The fatty alcohol polyoxyethylene ether A was purchased from Hai'an Petrochemical Plant, Jiangsu Province, with the item number MOA-7, and the fatty alcohol polyoxyethylene ether B was purchased from Hai'an Petrochemical Plant, Jiangsu Province, with the item number MOA-3. The active diluent is propylene oxide phenyl ether.

[0048] Example 5

[0049] The difference between this embodiment and embodiment 1 is that the raw materials for preparing the anti-permeation layer include 60 parts of epoxy resin, 18 parts of curing agent, 6 parts of reinforcing filler, 3 parts of wetting agent, 25 parts of diluent, and 2 parts of adhesion promoter, by weight. The epoxy resin includes epoxy resin A and epoxy resin B, the epoxy equivalent of epoxy resin A is 450-500 g / equivalent, the epoxy equivalent of epoxy resin B is 180-200 g / equivalent, and the weight ratio between epoxy resin A and epoxy resin B is 4:1. The epoxy resin A was purchased from Changsha Fudakang Chemical Materials Co., Ltd., with the article number: CYD-014U. The epoxy resin B was purchased from Qianguang Chemical, with the article number: QG. The curing agent is hexamethylenediamine. The reinforcing filler is silica, and the particle size of the silica is 100 nm. The fatty alcohol polyoxyethylene ether includes fatty alcohol polyoxyethylene ether A and fatty alcohol polyoxyethylene ether B, the weight ratio between the fatty alcohol polyoxyethylene ether A and the fatty alcohol polyoxyethylene ether B is 2:1, the hydroxyl value of the fatty alcohol polyoxyethylene ether A is 130-140 mgKOH / g, and the hydroxyl value of the fatty alcohol polyoxyethylene ether B is 170-180 mgKOH / g. The fatty alcohol polyoxyethylene ether A is purchased from Jiangsu Hai'an Petrochemical Plant, item number: MOA-7, and the fatty alcohol polyoxyethylene ether B is purchased from Jiangsu Hai'an Petrochemical Plant, item number: MOA-3. The active diluent is propylene oxide phenyl ether.

[0050] Performance Testing

[0051] Performance Test 1

[0052] An alkaline solution with a pH of 12 was poured onto the anti-permeation layer in Examples 1 to 5, and after 12 hours, it was observed whether the alkaline solution penetrated the anti-permeation layer. If it did not penetrate the anti-permeation layer, the anti-permeability was recorded as qualified; if it penetrated the anti-permeation layer, the anti-permeability was recorded as unqualified.

[0053] Performance Test 2

[0054] The setting time of the anti-permeability layer in Example 1 to Example 5 was tested with reference to GB 12007.7-89 standard to characterize its curing rate. If the setting time was less than 60 min, it was recorded as qualified setting, and if the setting time was greater than 60 min, it was recorded as unqualified setting.

[0055]

Claims

1. A method for collecting and temporarily storing hazardous waste from field oil and gas exploration, characterized in that: At least the steps include: S1. Prepare different containers according to the types of hazardous wastes, and set different distinguishing marks on different containers. The method of setting the distinguishing marks is selected from at least one of labeling, hanging and marking; S2. Classify different hazardous wastes into corresponding containers and transport them to a movable box for storage. The movable box is provided with different storage compartments, and different types of hazardous wastes are placed in different storage compartments; The interior of the movable box is separated by transverse partitions and longitudinal partitions to form different storage compartments, the transverse partitions and the bottom of the movable box are equipped with a weighing system, and the movable box is equipped with an alarm system; The bottom, side walls, transverse partitions and longitudinal partitions of the movable box are coated with an anti-permeability layer; The raw materials for preparing the anti-permeation layer include, by weight, at least 30-60 parts of epoxy resin, 5-18 parts of curing agent, 3-6 parts of reinforcing filler, 1-3 parts of wetting agent, 10-25 parts of diluent, and 0.5-2 parts of adhesion promoter; The epoxy resin comprises epoxy resin A and epoxy resin B, the epoxy equivalent of the epoxy resin A is 450-500 g / equivalent, the epoxy equivalent of the epoxy resin B is 180-200 g / equivalent, and the weight ratio of the epoxy resin A to the epoxy resin B is (3-5): 1; The curing agent is a mixture of hexamethylenediamine, 2-methylimidazole and polyetheramines, and the mass ratio of the hexamethylenediamine, 2-methylimidazole and polyetheramines is (1-3): 1:1; The reinforcing filler is selected from at least one of glass fiber, mica powder, silicon dioxide, titanium dioxide and silicon carbide.

2. The method for classified collection and temporary storage of hazardous wastes from field oil and gas exploration according to claim 1 is characterized in that: When different hazardous wastes are classified into different containers in S2, the hazardous wastes in different containers are weighed by a weighing system so that the weight of the hazardous wastes in the containers meets the storage weight standard.

3. The method for classified collection and temporary storage of hazardous wastes from field oil and gas exploration according to claim 2 is characterized in that: The weighing system comprises a weighing module, a data acquisition and transmission module and a control module. Information is fed back to the control module through the data acquisition and transmission module. The control module is connected to the alarm system through a signal.

4. The method for classified collection and temporary storage of hazardous wastes from field oil and gas exploration according to claim 1 is characterized in that: The diluent is a reactive diluent, and the reactive diluent is propylene oxide phenyl ether.

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