Production process of acephate soluble powder

Abstract

The invention discloses a production process of acephate soluble powder, and particularly relates to pesticides, the production process comprises the following steps: S01, weighing raw materials (by percentage): 75% of acephate, 3% of a wetting agent and 22% of ammonium sulfate; s02, acephate and a wetting agent are mixed and sequentially pass through an advanced flow reactor, a rotating disc reactor, a moving bed reactor, a piston flow reactor, a continuous stirring tank reactor, a tubular reactor oscillation reactor, a loop reactor and a pump reactor static mixer reactor, and prepared mixed powder returns to the advanced flow reactor; and S03, injecting ammonium sulfate into the advanced flow reactor, and then sequentially passing through the rotating disc reactor, the moving bed reactor, the piston flow reactor, the continuous stirring tank reactor, the tubular reactor and the oscillation reactor. Compared with powder, the pesticide prepared into powder is easier to store and accommodate, and the defects caused by powder leakage are avoided.

Description

Technical Field

[0001] The invention relates to pesticides, and in particular to a production process of acephate soluble powder. Background Art

[0002] Acephate, also known as acephate, is a low-toxic oral insecticide with a chemical formula of C4H10NO3PS. It has stomach poison and contact killing effects, can kill eggs, and has a certain fumigation effect. It is a slow-acting insecticide suitable for vegetables, tea trees, tobacco, fruit trees, cotton, rice, wheat, rapeseed and other crops to prevent and control a variety of chewing and piercing mouthparts pests, mites and sanitary pests.

[0003] The insecticides of acephate in the prior art are all in liquid form, and powder form is not available yet. Summary of the invention

[0004] The purpose of the present invention is to provide a production process of acephate soluble powder to solve the above problems.

[0005] In order to achieve the above object, the present invention provides the following technical solution: a production process of acephate soluble powder, comprising the following steps:

[0006] S01. Weigh the raw materials (in percentage): acephate-75%, wetting agent-3% and ammonium sulfate-22%;

[0007] S02, mixing acephate and a wetting agent, sequentially passing through a high-level flow reactor, a rotating disk reactor, a moving bed reactor, a plug flow reactor, a continuous stirred tank reactor, a tubular reactor oscillation reactor, a loop reactor and a pump reactor static mixer reactor, and the obtained mixed powder is returned to the high-level flow reactor;

[0008] S03. Inject ammonium sulfate into a high-level flow reactor, and then pass through a rotating disk reactor, a moving bed reactor, a plug flow reactor, a continuous stirred tank reactor, a tubular reactor oscillation reactor, a loop reactor and a pump reactor static mixer reactor in sequence to obtain a mixed final powder.

[0009] Preferably, the wetting agent is a powder prepared by dissolving and mixing 45% of alkyl sulfonate, 50% of white carbon black and 5% of pure water.

[0010] Preferably, the major diameter / minor diameter ratio of the bottom surface of the powder particles prepared in step S04 is 1.2 to 1.3, and the particle size is within the range of 2.80 mm to 1.70 mm, accounting for more than 80% by weight.

[0011] Preferably, the powder prepared in step S04 has 110 to 150 particles per 1 gram.

[0012] Preferably, during the execution of step S02 and step S03, the reactants need to stay for at least 30 min-45 min.

[0013] Preferably, during the execution of step S02 and step S03, the temperature of the reactants is maintained at 65° C.-85° C.

[0014] Preferably, the purity of the acephate is 90%-98%.

[0015] Preferably, the mixed powder prepared in step S02 is returned to the high-speed flow reactor and the ammonium sulfate in step S03 is added immediately.

[0016] In the above technical scheme, the present invention provides a production process for a soluble powder of acephate, which has the following beneficial effects: the pesticide is prepared into a powder, which is easier to store and collect than the powder, avoiding the disadvantages caused by powder leakage, and the process is improved during the preparation process, so that the effect of the prepared pesticide on controlling diseases is more obvious. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 A schematic diagram of the process structure provided by an embodiment of the present invention.

[0019] Description of reference numerals:

[0020] AFR, advanced flow reactor; SDR, rotating disk reactor; MBR, moving bed reactor; CMB, plug flow reactor; CSTR, continuous stirred tank reactor; FPR, tubular reactor oscillation reactor; SMR, loop reactor and pump reactor static mixer reactor. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0022] like Figure 1 As shown, a production process of acephate soluble powder includes the following embodiments:

[0023] Embodiment 1

[0024] The steps of this embodiment are as follows:

[0025] S01. Weigh the raw materials (in percentage): acephate-75%, wetting agent-3% and ammonium sulfate-22%;

[0026] S02, mixing acephate and a wetting agent, sequentially passing through an advanced flow reactor AFR, a rotating disk reactor SDR, a moving bed reactor MBR, a plug flow reactor CMB, a continuous stirred tank reactor CSTR, a tubular reactor oscillating reactor PFR, a loop reactor and a pump reactor static mixer reactor SMR, and the obtained mixed powder is returned to the advanced flow reactor AFR;

[0027] S03. Inject ammonium sulfate into the advanced flow reactor AFR, and then pass through the rotating disk reactor SDR, the moving bed reactor MBR, the piston flow reactor CMB, the continuous stirred tank reactor CSTR, the tubular reactor oscillation reactor, the loop reactor and the pump reactor static mixer reactor SMR in sequence to obtain the mixed final powder.

[0028] Furthermore, the wetting agent is a powder prepared by dissolving and mixing 45% of alkyl sulfonate, 50% of white carbon black and 5% of pure water.

[0029] Secondly, the major diameter / minor diameter ratio of the bottom surface of the powder particles prepared in step S04 is 1.2 to 1.3, and the particle size is within the range of 2.80 mm to 1.70 mm, accounting for more than 80% by weight.

[0030] Furthermore, the number of particles per 1 g of the powder prepared in step S04 is 110 to 150.

[0031] During the execution of step S02 and step S03, the reactants need to stay for at least 30 min-45 min.

[0032] Furthermore, during the execution of step S02 and step S03, the temperature of the reactants is maintained at 65°C-85°C.

[0033] Among them, the purity of acephate is 90%.

[0034] Furthermore, the mixed powder prepared in step S02 is returned to the advanced flow reactor AFR and the ammonium sulfate in step S03 needs to be added immediately.

[0035] Embodiment 2

[0036] The steps of this embodiment are as follows:

[0037] S01. Weigh the raw materials (in percentage): acephate-75%, wetting agent-3% and ammonium sulfate-22%;

[0038] S02, mixing acephate and a wetting agent, sequentially passing through an advanced flow reactor AFR, a rotating disk reactor SDR, a moving bed reactor MBR, a plug flow reactor CMB, a continuous stirred tank reactor CSTR, a tubular reactor oscillating reactor PFR, a loop reactor and a pump reactor static mixer reactor SMR, and the obtained mixed powder is returned to the advanced flow reactor AFR;

[0039] S03. Inject ammonium sulfate into the advanced flow reactor AFR, and then pass through the rotating disk reactor SDR, the moving bed reactor MBR, the piston flow reactor CMB, the continuous stirred tank reactor CSTR, the tubular reactor oscillation reactor, the loop reactor and the pump reactor static mixer reactor SMR in sequence to obtain the mixed final powder.

[0040] Furthermore, the wetting agent is a powder prepared by dissolving and mixing 45% of alkyl sulfonate, 50% of white carbon black and 5% of pure water.

[0041] Secondly, the major diameter / minor diameter ratio of the bottom surface of the powder particles prepared in step S04 is 1.2 to 1.3, and the particle size is within the range of 2.80 mm to 1.70 mm, accounting for more than 80% by weight.

[0042] Furthermore, the number of particles per 1 g of the powder prepared in step S04 is 110 to 150.

[0043] During the execution of step S02 and step S03, the reactants need to stay for at least 30 min-45 min.

[0044] Furthermore, during the execution of step S02 and step S03, the temperature of the reactants is maintained at 65°C-85°C.

[0045] Among them, the purity of acephate is 95%.

[0046] Furthermore, the mixed powder prepared in step S02 is returned to the advanced flow reactor AFR and the ammonium sulfate in step S03 needs to be added immediately.

[0047] Embodiment 3

[0048] The steps of this embodiment are as follows:

[0049] S01. Weigh the raw materials (in percentage): acephate-75%, wetting agent-3% and ammonium sulfate-22%;

[0050] S02, mixing acephate and a wetting agent, sequentially passing through an advanced flow reactor AFR, a rotating disk reactor SDR, a moving bed reactor MBR, a plug flow reactor CMB, a continuous stirred tank reactor CSTR, a tubular reactor oscillating reactor PFR, a loop reactor and a pump reactor static mixer reactor SMR, and the obtained mixed powder is returned to the advanced flow reactor AFR;

[0051] S03. Inject ammonium sulfate into the advanced flow reactor AFR, and then pass through the rotating disk reactor SDR, the moving bed reactor MBR, the piston flow reactor CMB, the continuous stirred tank reactor CSTR, the tubular reactor oscillation reactor, the loop reactor and the pump reactor static mixer reactor SMR in sequence to obtain the mixed final powder.

[0052] Furthermore, the wetting agent is a powder prepared by dissolving and mixing 45% of alkyl sulfonate, 50% of white carbon black and 5% of pure water.

[0053] Secondly, the major diameter / minor diameter ratio of the bottom surface of the powder particles prepared in step S04 is 1.2 to 1.3, and the particle size is within the range of 2.80 mm to 1.70 mm, accounting for more than 80% by weight.

[0054] Furthermore, the number of particles per 1 g of the powder prepared in step S04 is 110 to 150.

[0055] During the execution of step S02 and step S03, the reactants need to stay for at least 30 min-45 min.

[0056] Furthermore, during the execution of step S02 and step S03, the temperature of the reactants is maintained at 65°C-85°C.

[0057] Among them, the purity of acephate is 98%.

[0058] Furthermore, the mixed powder prepared in step S02 is returned to the advanced flow reactor AFR and the ammonium sulfate in step S03 needs to be added immediately.

[0059] Comparative Example 1

[0060] 10 g of the powders prepared in Example 1, Example 2 and Example 3 were respectively dissolved in 1 L of powder, and then sprayed on the same crops with the same disease, wherein:

[0061] 1. The area of ​​the experimental field is 400m*400m;

[0062] 2. The number of test plots in each embodiment is 5, and the 5 test plots are sprayed in sequence in the same continuous time period.

[0063] The experimental results are as follows:

[0064] In the five test plots of Example 1, the longest cure period for the disease was 8 days and the shortest was 5 days;

[0065] In the five test fields under Example 2, the longest cure period of the disease was 6 days and the shortest was 4 days;

[0066] In the five test fields under Example 3, the longest cure period of the disease was 3 days and the shortest was 3 days;

[0067] In summary, the purity of acephate in the examples determines the disease treatment effect of the soluble powder, and the higher the purity of acephate, the more obvious the pesticide effect.

[0068] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A process for producing acephate soluble powder, characterized in that: The following steps are involved: S01. Weigh the raw materials (in percentage): acephate-75%, wetting agent-3% and ammonium sulfate-22%; S02, acephate and wetting agent are mixed and sequentially passed through an advanced flow reactor (AFR), a rotating disk reactor (SDR), a moving bed reactor (MBR), a plug flow reactor (CMB), a continuous stirred tank reactor (CSTR), a tubular reactor oscillation reactor (PFR), a loop reactor and a pump reactor static mixer reactor (SMR), and the prepared mixed powder is returned to the advanced flow reactor (AFR); S03. Inject ammonium sulfate into an advanced flow reactor (AFR), and then pass through a rotating disk reactor (SDR), a moving bed reactor (MBR), a plug flow reactor (CMB), a continuous stirred tank reactor (CSTR), a tubular reactor oscillation reactor, a loop reactor and a pump reactor static mixer reactor (SMR) in sequence to obtain a mixed final powder.

2. A process for producing acephate soluble powder according to claim 1, characterized in that: The wetting agent is a powder prepared by dissolving and mixing 45% of alkyl sulfonate, 50% of white carbon black and 5% of pure water.

3. A process for producing acephate soluble powder according to claim 1, characterized in that: The major diameter / minor diameter ratio of the bottom surface of the powder particles prepared in step S04 is 1.2 to 1.3, and the particle size is within the range of 2.80 mm to 1.70 mm, accounting for more than 80% by weight.

4. A process for producing acephate soluble powder according to claim 1, characterized in that: The powder prepared in step S04 has 110 to 150 particles per 1 gram.

5. A process for producing acephate soluble powder according to claim 1, characterized in that: During the execution of step S02 and step S03, the reactants need to stay for at least 30 minutes to 45 minutes.

6. A process for producing acephate soluble powder according to claim 1, characterized in that: During the execution of step S02 and step S03, the temperature of the reactants is maintained at 65° C.-85° C.

7. A process for producing acephate soluble powder according to claim 1, characterized in that: The purity of the acephate is 90%-98%.

8. A process for producing acephate soluble powder according to claim 1, characterized in that: The mixed powder prepared in step S02 is returned to the advanced flow reactor (AFR) and the ammonium sulfate in step S03 must be added immediately.

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