Accurate online dilution system and dilution method thereof
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An accurate and pipeline technology, applied in the precise online dilution system and its dilution field, can solve the problem of inaccurate detection, and achieve the effect of ensuring the measurement accuracy, saving investment and low operating cost.
Pending Publication Date: 2021-11-19
陆越自动化科技(上海)有限公司
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[0009] The object of the present invention is to provide a kind of accurate on-line dilution system and its dilution method, to solve the above-mentioned background technology. In the process of mother liquor dil
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Embodiment 1
[0028] Pump into the reaction kettle with a temperature of 50°C, Fe 2+ FeSO at a concentration of 100g / l 4 The solution is 40KG, the feed rate is 80KG / h, and the mother liquor is FeSO of unknown solution 4 solution, the solvent is pure water.
[0029] first step:
[0030] Set target temperature 50°C, target Fe 2+ The concentration is 100g / l, the target FeSO4 solution quality is 40KG, set the diluted FeSO 4 The flow rate of the pipeline where the solution enters the reactor is 80KG / h;
[0031] The temperature of the pure water is monitored in the meter set 18, and the temperature, density, flow rate and cumulative mass flow are monitored in the meter set 2 9 and the meter set 3 10, and the flow rate of the pure water is controlled by the frequency conversion motor PID;
[0032] Open the pump one 12 and valve of pipeline one 4 and pipeline three 6, the FeSO of the mother liquor that detects 4 The temperature is 40.1°C and the density is 1.2412g / cm 3 , the pure water tempe...
Embodiment 2
[0036] Pump temperature 30°C, Fe 2+ FeSO at a concentration of 90g / l 4 The solution is 50KG, the feed rate is 60KG / h, and the mother liquor is FeSO of unknown solution 4 solution, the solvent is pure water.
[0037] first step:
[0038] Set target temperature 30°C, target Fe 2+ Concentration 90g / l, target FeSO 4 The quality of the solution is 50KG, set the diluted FeSO 4 The flow rate of the pipeline where the solution enters the reactor is 60KG / h;
[0039] The temperature of the pure water is monitored in the meter set 18, and the temperature, density, flow rate and cumulative mass flow are monitored in the meter set 2 9 and the meter set 3 10, and the flow rate of the pure water is controlled by the frequency conversion motor PID;
[0040] Open the pump one 12 and valve of pipeline one 4 and pipeline three 6, the FeSO of the mother liquor that detects 4 The temperature is 42.3°C and the density is 1.2376g / cm 3 , the pure water temperature is room temperature 32.8 ℃, ...
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Abstract
,The invention discloses an accurate online dilution system and a dilution method thereof, the lower part of a concentrated mother liquor tank is connected with the inlet end of a pipeline mixer through a first pipeline, the outlet end of the pipeline mixer is respectively connected with a third pipeline and a fourth pipeline, the other end of the third pipeline is connected with the top of the concentrated mother liquor tank, and the other end of the fourth pipeline is connected with a reaction kettle, the lower portion of the solvent tank is connected with the inlet end of the pipeline mixer through a second pipeline, a second pump and a plurality of valves are installed on the first pipeline, valves are installed on the third pipeline and the fourth pipeline, and a third instrument set is installed at the joint of the third pipeline and the fourth pipeline and the outlet end of the pipeline mixer. In the whole automatic dilution process, a user only needs to provide target temperature, target concentration and target flow, the concentration of mother liquor does not need to be detected, the concentration of the diluted solution does not need to be detected, it can be guaranteed that the concentration value and the flow after dilution are within the target range of the user, and the whole process is automatically completed by the system and does not need manual control.
Description
technical field [0001] The invention relates to the technical field of chemical production, in particular to an accurate on-line dilution system and a dilution method thereof. Background technique [0002] In the field of chemical production, this situation is often encountered: before the raw material solution enters the reactor, a certain concentration range needs to be controlled, so that the chemical reaction in the reactor is affected by the concentration of the raw material solution and is consistent in each batch. , thereby improving the stability of product performance. [0003] At present, in the field of chemical manufacturing, such as attached figure 1 As shown, the traditional solution dilution method is: first detect the concentration of the mother solution, the concentration can be all forms of concentration required by the user, such as mass ratio concentration, volume ratio concentration or mass volume ratio concentration, and then according to the concentra...
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