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Evaluation device and evaluation method for scale formation trend and scale inhibition effect

An evaluation device and evaluation method technology, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of high cost, complex structure of experimental devices, long test cycle, etc., and achieve the effect of simplified structure and wide application range

Inactive Publication Date: 2010-09-29
吴鹏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of the dynamic method is that it can reliably reflect the scaling tendency of the sample, as well as the scale inhibition performance of chemical agents and physical methods. The disadvantages are that the required sample size is large, the test period is long, the experimental device structure is complex, and the cost is expensive.

Method used

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  • Evaluation device and evaluation method for scale formation trend and scale inhibition effect
  • Evaluation device and evaluation method for scale formation trend and scale inhibition effect
  • Evaluation device and evaluation method for scale formation trend and scale inhibition effect

Examples

Experimental program
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Effect test

Embodiment 1

[0060] Latex tubes are installed on the outlet valve of the glass lower mouth bottle with a capacity of 2500ml, and 5 pieces of latex tubes are inserted at the same time, and the dimensions are φ2.0mm×215mm, φ1.6mm×100mm, φ0.9mm×82mm, φ0.6mm × 28mm, φ0.5mm × 28mm stainless steel capillary tube; place the glass bottom bottle on a magnetic stirrer in an air bath at a temperature of 25°C, add a magnetic stirrer with a size of φ8mm × 50mm in it, and put it in each stainless steel capillary Place a glass measuring cylinder under each end; preheat deionized water, 1% sodium carbonate aqueous solution and 1% calcium chloride aqueous solution in a water bath with a water temperature of 25°C for 30 minutes; Add 25ml of sodium carbonate aqueous solution with a mass concentration of 1%, 2425ml of deionized water and 50ml of a calcium chloride aqueous solution with a mass concentration of 1% in the bottle, start the magnetic stirrer and start stirring at a speed of 300r / min; Cover the 16#...

Embodiment 2

[0066] Install a latex tube on the outlet valve of the glass bottom bottle with a capacity of 2500ml, and insert a stainless steel capillary tube with a size of φ0.6mm×28mm on the latex tube; place the glass bottom bottle at a temperature of 25°C in an air bath On the magnetic stirrer, a magnetic stirrer with a size of φ8mm×50mm is added therein, and a glass measuring cylinder is placed under the end of the stainless steel capillary; deionized water, a 1% sodium carbonate aqueous solution and a mass concentration of 1% chlorine The calcium chloride aqueous solution is placed in a water bath with a water temperature of 25° C. for preheating for 30 minutes; 25 ml of a mass concentration of 1% sodium carbonate solution and 1.25 ml of a mass concentration of 1% aminotrimethylene phosphoric acid (ATMP) are successively added to the lower glass bottle. Aqueous solution, 2424ml of deionized water and 50ml of calcium chloride aqueous solution with a mass concentration of 1%, start the ...

Embodiment 3

[0074] Heat 2500ml of a kind of dehydrated and degassed crude oil in a water bath at 80°C for 48 hours (hours) and then place it in a water bath at 60°C for 12 hours; install a silicone tube on the outlet valve of a glass bottle with a capacity of 2500ml, Insert a stainless steel capillary tube with a size of φ2.0mm×215mm on the silicone tube; place the glass bottom bottle on a magnetic stirrer with a heating function in an air bath at a temperature of 36°C, and add a capillary tube with a size of φ8mm×50mm to it. With a magnetic stirring bar, pass the end of the stainless steel capillary through the upper part of a plastic measuring cylinder with a capacity of 10ml, and cover the plastic measuring cylinder with a rubber plug inserted with a φ7mm glass tube; pour the oil sample into a glass bottom bottle, and start the magnetic stirrer Start to stir at a speed of 300r / min; put a 16# rubber stopper inserted with a φ7mm×400mm glass tube and a magnetic stirrer temperature probe on...

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Abstract

The invention discloses an evaluation device and an evaluation method for scale formation trend and scale inhibition effect. The principle is as follows: a sample is enabled to flow through a capillary with a constant pressure difference, and the scale formation trend of the sample is represented by the blockage condition of the capillary reflected by monitoring the attenuation of the flow rate ofthe sample in the capillary; and the scale inhibition performance of a physical measure and medicament is represented by a ratio of the accumulated outflow of a chemical or physical modified sample and the accumulated outflow of a bland sample under the same instantaneous outflow rate attenuating range. The evaluation device and the evaluation method for scale formation trend and scale inhibitioneffect are suitable for scale formation forecast of various liquid mediums in water treatment, petroleum exploitation, seawater desalination, petroleum processing and chemical production as well as scale inhibition performance evaluation and selection of various physical and chemical scale inhibition measures.

Description

technical field [0001] The present invention relates to a dynamic evaluation method for scaling tendency and antiscaling effect of liquid medium, especially a method for evaluating scaling tendency of various liquid media in water treatment, oil exploitation, seawater desalination, petroleum processing and chemical production, and An evaluation device and evaluation method for scale inhibition performance of various physical and chemical scale inhibition measures. Background technique [0002] In water treatment, oil extraction, seawater desalination, petroleum processing and chemical production, there are a lot of organic and / or inorganic scales deposited on the inner wall of the pipeline and the heat exchange surface, resulting in increased energy consumption for liquid transportation, decreased transport capacity and heat exchange efficiency The economic loss caused by the problem of decline is very significant. For this reason, in different industries, according to the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/00
Inventor 吴鹏
Owner 吴鹏
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