A continuous production system of potassium formate
By adding a reaction cooler and control system to the outside of the reactor, the problem of unstable heat removal in the batch reaction was solved, realizing the continuous production of potassium formate, improving production efficiency and product quality stability, and reducing energy consumption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG LUXIN DESIGN ENG
- Filing Date
- 2025-09-08
- Publication Date
- 2026-07-31
AI Technical Summary
Existing potassium formate production technology uses a batch reactor, resulting in intermittent production of materials and significant differences in product performance. How can we effectively remove heat and ensure stable product quality?
A reaction cooler is added outside the reactor, and a pump and mixer are connected in series through pipelines to achieve a continuous reaction between potassium salt alkali and formic acid. An external refrigeration unit is used to remove the heat of the reaction, and a pressure sensor and an electronically controlled regulating valve are used to control the material ratio.
This enables continuous production of potassium formate, improves production efficiency, reduces energy consumption, extends the service life of refrigeration units, and ensures stable product quality.
Smart Images
Figure CN224573734U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of potassium formate production technology, specifically relating to a continuous potassium formate production system. Background Technology
[0002] Potassium formate is a commonly used chemical raw material, widely used in drilling fluids, de-icing agents, and corrosion inhibitors. Potassium formate is typically prepared through the neutralization reaction of formic acid and a potassium alkali (such as potassium hydroxide or potassium carbonate).
[0003] HCOOH + KOH → HCOOK + H2O
[0004] 2HCOOH + K2CO3 → HCOOK + H2O + CO2
[0005] Existing technology involves adding a certain amount of potassium alkali (such as potassium hydroxide, potassium carbonate, etc.) to a reaction vessel, stirring to dissolve it, and then adding formic acid. After neutralization, a corresponding potassium formate solution is prepared. During the reaction, the heat is carried away by a coolant.
[0006] Existing technology uses batch reactors, resulting in batch-by-batch and intermittent production of materials. Due to differences in operating parameters, the performance of products varies from batch to batch.
[0007] Therefore, how to effectively remove heat while ensuring stable product quality has become an urgent problem to be solved in the current potassium formate preparation project. Utility Model Content
[0008] The technical problem to be solved by this application is to overcome the shortcomings of the prior art and provide a continuous production system for potassium formate. This application can achieve continuous discharge by adding a reaction cooler outside the reaction vessel, which facilitates the stabilization of the load of the refrigeration unit and reduces energy consumption.
[0009] The technical solution adopted by this application to solve its existing problems is:
[0010] A continuous production system for potassium formate includes a reactor, with a pump, a mixer and a reaction cooler connected in series via pipelines at the discharge end of the reactor.
[0011] The feed end of the reactor is connected to the liquid potassium salt alkali supply pipeline, and the mixer is connected to the formic acid supply pipeline through the formic acid feed pipe.
[0012] The outlet of the reaction cooler is connected to the potassium formate discharge pipeline.
[0013] Preferably, the outlet of the reaction cooler is connected to the potassium formate discharge pipeline and the reaction vessel via a three-way valve or two shut-off valves, respectively.
[0014] Preferably, the mixer includes a mixing cylinder. The mixing cylinder is connected to the pump outlet via a potassium salt / alkali feed pipe; the mixing cylinder is connected to the inlet of the reaction cooler via a post-mixing discharge pipe.
[0015] Preferably, the mixing cylinder is provided with a discharge ring inside, and the discharge ring is connected in a through connection with the formic acid feed pipe.
[0016] Preferably, the mixing cylinder has several layers of discharge rings inside, and the inner diameter of each discharge ring increases from bottom to top.
[0017] Preferably, the potassium salt feed pipe is equipped with a pressure sensor, and the formic acid feed pipe is equipped with an electrically controlled regulating valve, wherein the pressure sensor is electrically connected to the electrically controlled regulating valve.
[0018] Compared with the prior art, the beneficial effects of this application are as follows:
[0019] (1) By using an external reaction cooler to react potassium salt and formic acid, the heat generated during the reaction can be removed by the refrigeration unit. The reactor only performs preliminary treatment of the potassium salt, and this treatment can be carried out continuously. This allows the system to achieve continuous production of potassium formate, changing the batch reaction mode in the existing technology and improving the production efficiency and the continuity of the output.
[0020] (2) Because the generation becomes continuous, the refrigeration unit operates under a constant load. Unlike existing technologies where the refrigeration unit load fluctuates to match intermittent reactions, and there are even frequent shutdowns and restarts, this technology is more conducive to reducing energy consumption and extending the service life of the refrigeration unit. Attached Figure Description
[0021] The present application will be further described below with reference to the accompanying drawings and embodiments.
[0022] Figure 1 This is a diagram of a continuous potassium formate production system according to this application.
[0023] Figure 2 This is a structural diagram of a mixer in a continuous potassium formate production system according to this application.
[0024] Figure 3 This is a cross-sectional view of a mixer in a continuous potassium formate production system according to this application.
[0025] Figure 4 This is a control diagram of the mixer in a continuous potassium formate production system according to this application.
[0026] In the diagram: 1-Reaction vessel, 2-Pump, 3-Mixer, 301-Mixing cylinder, 302-Potassium salt / alkali feed pipe, 303-Discharge pipe after mixing, 304-Formic acid feed pipe, 305-Upper discharge ring, 306-Lower discharge ring, 307-Pressure sensor, 308-Electrically controlled regulating valve, 4-Reaction cooler. Detailed Implementation
[0027] The attached figure shows the preferred embodiment of this continuous potassium formate production system. The following is a more detailed description of this application in conjunction with the attached figure.
[0028] Depend on Figure 1 As shown, a continuous production system for potassium formate includes a reactor 1, and a pump 2, a mixer 3, and a reaction cooler 4 are connected in series via pipelines at the discharge end of the reactor 1.
[0029] The feed end of the reactor 1 is connected to the liquid potassium salt alkali supply pipeline, and the mixer 3 is connected to the formic acid supply pipeline through the formic acid feed pipe 304.
[0030] The outlet of the reaction cooler 4 is connected to the potassium formate discharge pipeline.
[0031] During use, the liquefied potassium salt alkali is injected into the reactor 1 through the potassium salt alkali supply pipeline. To prevent the back pressure inside the reactor 1 from increasing during injection, the reactor 1 is connected to a venting pipeline. Purchased formic acid is unloaded / re-filled into the formic acid storage tank, and then connected to the formic acid inlet pipe 304 through a supply pump and formic acid supply pipeline.
[0032] After being stirred inside reactor 1, potassium formate is pumped into mixer 3 by pump 2 to mix with formic acid. The mixture then enters reaction cooler 4 for further reaction. An external refrigeration unit cools reaction cooler 4 to remove the heat generated by the reaction. This enables the continuous production of potassium formate.
[0033] In this embodiment, the outlet of the reaction cooler 4 is connected to the potassium formate discharge pipeline and the reaction vessel 1 via a three-way valve or two shut-off valves, respectively. A detection instrument is installed at the outlet of the reaction cooler 4 to detect the concentration of the potassium formate product. If the concentration meets the standard, the corresponding valve is opened, and the product flows into the potassium formate discharge pipeline. If the concentration does not meet the standard or the downstream storage is full, the corresponding valve is opened, and the product flows into the reaction vessel 1.
[0034] To optimize the mixing effect of potassium salt alkali and formic acid, by Figures 2 to 4 As shown, the mixer 3 includes a mixing cylinder 301.
[0035] The mixing cylinder 301 is connected to the outlet of pump 2 through the potassium salt and alkali feed pipe 302, and the mixing cylinder 301 is connected to the inlet of the reaction cooler 4 through the post-mixing discharge pipe 303.
[0036] The mixing cylinder 301 has a discharge ring inside, which is connected to the formic acid feed pipe 304. The mixing cylinder 301 has several layers of discharge rings inside, with the inner diameter of each layer increasing from bottom to top. For example, the mixing cylinder 301 has two layers of discharge rings: an upper discharge ring 305 and a lower discharge ring 306. The inner diameter of the upper discharge ring 305 is larger than that of the lower discharge ring 306, and the through-hole for discharging material is located below its center.
[0037] A pressure sensor 307 is installed on the potassium salt / alkali feed pipe 302, and an electrically controlled regulating valve 308 is installed on the formic acid feed pipe 304. The pressure sensor 307 is electrically connected to the electrically controlled regulating valve 308. The pressure sensor 307 determines the flow rate by detecting the pressure of the potassium salt / alkali solution inside the potassium salt / alkali feed pipe 302, and then transmits this parameter to the control module of the electrically controlled regulating valve 308 via an analog signal to control the opening degree of the electrically controlled regulating valve 308. When the pressure of the pressure sensor 307 is high, the opening degree of the electrically controlled regulating valve 308 is large, so that the ratio of potassium salt / alkali solution to formic acid solution is within the allowable range.
[0038] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.
Claims
1. A continuous production system for potassium formate, comprising a reaction vessel (1), characterized in that: The discharge end of the reactor (1) is connected in series with a pump (2), a mixer (3) and a reaction cooler (4) through pipelines; The feed end of the reactor (1) is connected to the liquid potassium salt alkali supply pipeline, and the mixer (3) is connected to the formic acid supply pipeline through the formic acid feed pipe (304). The outlet of the reaction cooler (4) is connected to the potassium formate discharge pipeline.
2. The continuous potassium formate production system according to claim 1, characterized in that: The outlet of the reaction cooler (4) is connected to the potassium formate discharge pipeline and the reaction vessel (1) through a three-way valve or two shut-off valves respectively.
3. The continuous potassium formate production system according to claim 1, characterized in that: The mixer (3) includes a mixing cylinder (301); The mixing cylinder (301) is connected to the outlet of the pump (2) through the potassium salt alkali feed pipe (302); The mixing cylinder (301) is connected to the inlet of the reaction cooler (4) through the post-mixing discharge pipe (303).
4. The continuous potassium formate production system according to claim 3, characterized in that: The mixing cylinder (301) is provided with a discharge ring inside, which is connected to the formic acid feed pipe (304).
5. A continuous potassium formate production system according to claim 4, characterized in that: The mixing cylinder (301) has several layers of discharge rings inside, and the inner diameter of each discharge ring increases from bottom to top.
6. A continuous potassium formate production system according to claim 3, 4, or 5, characterized in that: The potassium salt feed pipe (302) is equipped with a pressure sensor (307), and the formic acid feed pipe (304) is equipped with an electrically controlled regulating valve (308). The pressure sensor (307) is electrically connected to the electrically controlled regulating valve (308).