阅读说明：本技术 一种甲酸钠生产的蒸发结晶工艺 (Evaporation crystallization process for producing sodium formate ) 是由 慈敦锋 于 2019-09-18 设计创作，主要内容包括：本发明公开了一种甲酸钠生产的蒸发结晶工艺,具体包括以下步骤：S1、首先将需要进行蒸发结晶的甲酸钠取出,接着利于漏网和筛网对甲酸钠进行筛分,待筛分好之后便将甲酸钠放置在蒸发设备内,而筛选所剩下物质进行收集放置在一旁,后续将不会使用到该物质本发明涉及甲酸钠生产加工技术领域。该甲酸钠生产的蒸发结晶工艺,可以有效预防甲酸钠结晶时出现结晶率较低而且出现结晶失败的问题,让整个甲酸钠的结晶加工速度增加,这样大幅度调高了工人们的工作效率,使甲酸钠的整个加工流程加快,而且甲酸钠的结晶质量得到了保障,利于人们使用,这解决了目前现有的甲酸钠生产的蒸发结晶工艺结晶率较低,而且结晶速度也较慢的问题。(The invention discloses an evaporative crystallization process for producing sodium formate, which specifically comprises the following steps: s1, firstly taking out the sodium formate to be evaporated and crystallized, then screening the sodium formate by using a screen and a screen, placing the sodium formate in evaporation equipment after the sodium formate is screened, collecting the rest substances after screening, placing the rest substances aside, and then not using the substances. The evaporation crystallization process for producing sodium formate can effectively prevent the problems of low crystallization rate and crystallization failure during sodium formate crystallization, increase the crystallization processing speed of the whole sodium formate, greatly improve the work efficiency of workers and people, accelerate the whole processing flow of sodium formate, ensure the crystallization quality of sodium formate, and be beneficial to people to use, thus solving the problems of low crystallization rate and low crystallization speed of the existing evaporation crystallization process for producing sodium formate.)

1. An evaporation crystallization process for producing sodium formate is characterized in that: the method specifically comprises the following steps:

s1, firstly, taking out the sodium formate to be evaporated and crystallized, then preparing a matched leaking net and a screen, then screening the sodium formate by the leaking net and the screen, placing the sodium formate in an evaporating device after screening, collecting and placing the substances left after screening, and not using the substances in the following;

s2, starting evaporation equipment, adjusting the temperature, controlling the temperature to be between 55 and 65 ℃, sealing the evaporation equipment and reserving an exhaust hole, evaporating the sodium formate in the evaporation equipment at a low temperature to evaporate all water in the evaporation equipment, keeping the temperature between required values all the time, setting evaporation time according to the volume of the sodium formate, and taking out the sodium formate after waiting for the time;

s3, adding a sodium formate crystallization auxiliary liquid into the sodium formate evaporated at the low temperature, uniformly mixing the sodium formate crystallization auxiliary liquid with the sodium formate, placing the fused sodium formate in a special evaporator, adjusting the temperature to the critical point of sodium formate evaporation, and setting the time and then waiting for the completion;

s4, testing the sodium formate to be crystallized before placing the sodium formate in a crystallizing device, detecting whether each numerical value of the sodium formate meets the crystallization standard, preventing the sodium formate from being crystallized and failed, reworking unqualified sodium formate, and crystallizing the qualified sodium formate.

S5, all sodium formate meeting the standard is placed in a crystallization container, and the value is set according to the volume and the degree of the sodium formate in the container, and then the crystallization can be started.

2. The evaporative crystallization process for sodium formate production according to claim 1, wherein: the screen and the sieve used in S1 are not fixed in shape, and the density of the holes on the surface of the screen and the sieve clearance are adjusted according to the sodium formate to be screened.

3. The evaporative crystallization process for sodium formate production according to claim 1, wherein: the low-temperature evaporation time set in S2 is set according to the volume of sodium formate, and the evaporation time is longer as the amount of sodium formate is larger, whereas the evaporation time is shorter as the amount of sodium formate is smaller.

4. The evaporative crystallization process for sodium formate production according to claim 1, wherein: the used components of the sodium formate crystallization auxiliary liquid added in the S3 are not fixed, and the components of the sodium formate crystallization auxiliary liquid can be randomly exchanged according to different seasons, different times and different conditions to help sodium formate to crystallize.

5. The evaporative crystallization process for sodium formate production according to claim 1, wherein: the threshold temperature set in S4 may be adjusted, such as a higher threshold temperature may be set in colder weather, for example, a lower threshold temperature may be set in hotter weather.

6. The evaporative crystallization process for sodium formate production according to claim 1, wherein: and collecting the sodium formate crystallized in the S5 after standing for a period of time, and packaging the collected sodium formate, wherein the packaging represents that the processing of the sodium formate is finished.

Technical Field

The invention relates to the technical field of sodium formate production and processing, in particular to an evaporation crystallization process for producing sodium formate.

Background

Sodium formate, also called sodium formate, contains two crystal water in the crystal, so called sodium formate dihydrate, sodium formate is a simplest organic carboxylate, it is white crystal or powder, slightly formic acid smell, slightly deliquescent and hygroscopic, easily soluble in about 1.3 parts of water and glycerin, slightly soluble in ethanol, octanol, insoluble in ether, its aqueous solution is alkaline, sodium formate decomposes into hydrogen and sodium oxalate when heated, then sodium carbonate is produced, sodium formate is mainly used for producing sodium hydrosulfite, oxalic acid and formic acid, sodium formate is used as camouflage acid in chrome tanning method in leather industry, used for catalyst and stable synthetic agent, reducing agent in printing and dyeing industry, sodium formate is harmless to human body, has irritation to eyes, respiratory system and skin, is used for producing formic acid, oxalic acid and sodium hydrosulfite, also used for producing dimethyl formamide, etc., and also used for medicine, The dye printing industry, and the method is also used as a reagent for measuring phosphorus and arsenic, a disinfectant, a mordant and the like.

The sodium formate is soluble in glycerin, slightly soluble in ethanol and octanol, insoluble in ether, alkaline in aqueous solution, 1.92 in relative density, 253 ℃ in melting point, irritant, 2-molecule crystal water contained in the commodity, can be used as camouflage acid in leather industry and chrome tanning method, used as catalyst and stable synthetic agent, reducing agent in printing and dyeing industry, used for producing sodium hydrosulfite, oxalic acid and formic acid, precipitating noble metal, forming trivalent metal complex ion in solution, having buffer function, and capable of correcting pH value of strong acid, and can be used for alkyd resin coating, plasticizer, explosive, acid-resistant material, aviation lubricant and adhesive additive,

the existing evaporation crystallization process for producing sodium formate has low crystallization rate and low crystallization speed, so that the processing of workers is slowed seriously, the whole processing time is prolonged, the processing efficiency of people is greatly reduced, and the use of the sodium formate is not facilitated.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides an evaporative crystallization process for producing sodium formate, which solves the problems of low crystallization rate and low crystallization speed of the conventional evaporative crystallization process for producing sodium formate.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: an evaporative crystallization process for producing sodium formate specifically comprises the following steps:

s1, firstly, taking out the sodium formate to be evaporated and crystallized, then preparing a matched leaking net and a screen, then screening the sodium formate by the leaking net and the screen, placing the sodium formate in an evaporating device after screening, collecting and placing the substances left after screening, and not using the substances in the following;

s2, starting evaporation equipment, adjusting the temperature, controlling the temperature to be between 55 and 65 ℃, sealing the evaporation equipment and reserving an exhaust hole, evaporating the sodium formate in the evaporation equipment at a low temperature to evaporate all water in the evaporation equipment, keeping the temperature between required values all the time, setting evaporation time according to the volume of the sodium formate, and taking out the sodium formate after waiting for the time;

s3, adding a sodium formate crystallization auxiliary liquid into the sodium formate evaporated at the low temperature, uniformly mixing the sodium formate crystallization auxiliary liquid with the sodium formate, placing the fused sodium formate in a special evaporator, adjusting the temperature to the critical point of sodium formate evaporation, and setting the time and then waiting for the completion;

s4, testing the sodium formate to be crystallized before placing the sodium formate in a crystallizing device, detecting whether each numerical value of the sodium formate meets the crystallization standard, preventing the sodium formate from being crystallized and failed, reworking unqualified sodium formate, and crystallizing the qualified sodium formate.

S5, all sodium formate meeting the standard is placed in a crystallization container, and the value is set according to the volume and the degree of the sodium formate in the container, and then the crystallization can be started.

Preferably, the screen and the sieve used in S1 are not fixed in shape, and the density of the holes on the surface of the screen and the sieving gap are adjusted according to the sodium formate to be sieved.

Preferably, the low-temperature evaporation time set in S2 is set according to the volume of sodium formate, and the evaporation time is longer as the amount of sodium formate is larger, and is shorter as the amount of sodium formate is smaller.

Preferably, the sodium formate crystallization auxiliary liquid added in S3 has non-fixed used components, and the components of the sodium formate crystallization auxiliary liquid can be optionally changed according to different seasons and different times to assist the crystallization of sodium formate.

Preferably, the threshold temperature set in S4 may be adjusted, such as a higher threshold temperature may be set in colder weather, for example, a lower threshold temperature may be set in hotter weather.

Preferably, the sodium formate crystallized in S5 is collected after standing for a period of time, and the collected sodium formate is packaged and encapsulated, the encapsulation representing that the processing of the sodium formate is completed.

(III) advantageous effects

The invention provides an evaporation crystallization process for producing sodium formate. The method has the following beneficial effects:

(1) the evaporation crystallization process for producing sodium formate comprises the steps of adding sodium formate crystallization auxiliary liquid into sodium formate evaporated at low temperature, uniformly mixing the sodium formate crystallization auxiliary liquid and the sodium formate, placing the fused sodium formate in a special evaporator, adjusting the temperature to a critical point of sodium formate evaporation, waiting for finishing after setting time, testing the sodium formate to be crystallized before placing the sodium formate in a crystallization device, detecting whether all numerical values of the sodium formate meet crystallization standards, preventing sodium formate crystallization failure, reworking unqualified sodium formate, performing crystallization processing on qualified sodium formate, effectively preventing the problems of low crystallization rate and crystallization failure during sodium formate crystallization, and increasing the crystallization processing speed of the whole sodium formate, therefore, the working efficiency of workers and people is greatly improved, the whole processing flow of the sodium formate is accelerated, the crystallization quality of the sodium formate is guaranteed, and the sodium formate is beneficial to people to use, so that the problems that the existing evaporation crystallization process for producing the sodium formate is low in crystallization rate and low in crystallization speed are solved.

(2) The evaporation crystallization process for producing the sodium formate comprises the steps of firstly taking out the sodium formate to be evaporated and crystallized, then preparing a matched leaking net and a matched screen, then screening the sodium formate by the leaking net and the screen, placing the sodium formate in evaporation equipment after screening, collecting and placing the rest substances aside, subsequently not using the substances, starting the evaporation equipment, adjusting the temperature, controlling the temperature to be between 55 and 65 ℃, sealing the evaporation equipment and leaving an exhaust hole, evaporating the sodium formate in the evaporation equipment at low temperature, completely evaporating the water in the evaporation equipment, keeping the temperature between required values all the time, setting evaporation time according to the volume of the sodium formate, taking out the sodium formate after waiting for the time, and improving the quality of the final sodium formate crystallization, the crystallization of the sodium formate obtained after the processing is more careful and has better quality, so that the using effect of subsequent people when using the sodium formate for crystallization is better, the competition of the sodium formate crystallization in the same row is facilitated, the use of people is facilitated, and the problem of common quality of the sodium formate crystals processed by the existing evaporation crystallization process for producing the sodium formate is solved.

(3) The evaporation and crystallization process for producing the sodium formate comprises the steps of starting evaporation equipment, adjusting the temperature, controlling the temperature to be between 55 and 65 ℃, sealing the evaporation equipment and reserving an exhaust hole, evaporating the sodium formate in the evaporation equipment at a low temperature to evaporate all water in the evaporation equipment, keeping the temperature between required values all the time, setting evaporation time according to the volume of the sodium formate, taking out the sodium formate after waiting for the end of the time, adding sodium formate crystallization auxiliary liquid into the sodium formate evaporated at the low temperature, uniformly mixing the auxiliary liquid with the sodium formate to ensure that the sodium formate crystallization auxiliary liquid is fully melted in the sodium formate, then placing the melted sodium formate in a special evaporator, adjusting the temperature to the critical point of the evaporation of the sodium formate, waiting for the end after setting the time, and enabling the evaporation effect of the sodium formate to be better, the evaporation of the water in the sodium formate is more thorough, the subsequent use of the sodium formate cannot be influenced by the extremely high temperature of the evaporation, the loss of people is reduced, the use of people is facilitated, and the problem that the evaporation is not thorough enough easily occurs in the evaporation crystallization process of the existing sodium formate production is solved.

Drawings

FIG. 1 is a flow chart of the system principle of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Please refer to fig. 1, which illustrates an embodiment of the present invention: an evaporative crystallization process for producing sodium formate specifically comprises the following steps:

s1, firstly, taking out the sodium formate to be evaporated and crystallized, then preparing a matched leaking net and a screen, then screening the sodium formate by the leaking net and the screen, placing the sodium formate in an evaporating device after screening, collecting and placing the substances left after screening, and not using the substances in the following;

s2, starting evaporation equipment, adjusting the temperature, controlling the temperature to be between 55 and 65 ℃, sealing the evaporation equipment and reserving an exhaust hole, evaporating the sodium formate in the evaporation equipment at a low temperature to evaporate all water in the evaporation equipment, keeping the temperature between required values all the time, setting evaporation time according to the volume of the sodium formate, and taking out the sodium formate after waiting for the time;

s3, adding a sodium formate crystallization auxiliary liquid into the sodium formate evaporated at the low temperature, uniformly mixing the sodium formate crystallization auxiliary liquid with the sodium formate, placing the fused sodium formate in a special evaporator, adjusting the temperature to the critical point of sodium formate evaporation, and setting the time and then waiting for the completion;

s4, testing the sodium formate to be crystallized before placing the sodium formate in a crystallizing device, detecting whether each numerical value of the sodium formate meets the crystallization standard, preventing the sodium formate from being crystallized and failed, reworking unqualified sodium formate, and crystallizing the qualified sodium formate.

S5, all sodium formate meeting the standard is placed in a crystallization container, and the value is set according to the volume and the degree of the sodium formate in the container, and then the crystallization can be started.

In the invention, the screen cloth and the sieve used in S1 are not fixed in shape, and the density of holes on the surface of the screen cloth and the sieving clearance are adjusted according to the sodium formate to be sieved.

In the present invention, the low-temperature evaporation time set in S2 is set according to the volume of sodium formate, and the evaporation time is longer as the amount of sodium formate is larger, whereas the evaporation time is shorter as the amount of sodium formate is smaller.

In the invention, the used components of the sodium formate crystallization auxiliary liquid added in the S3 are not fixed, and the components of the sodium formate crystallization auxiliary liquid can be randomly exchanged according to different seasons and different times to help sodium formate to crystallize.

In the present invention, the threshold temperature set in S4 can be adjusted, for example, a higher threshold temperature can be set in cold weather, for example, a lower threshold temperature can be set in hot weather.

In the invention, the sodium formate crystallized in S5 is collected after standing for a period of time, and the collected sodium formate is packaged and encapsulated, the encapsulation represents that the processing of the sodium formate is finished, the crystal contains two crystal water, so the sodium formate dihydrate, sodium formate dihydrate and sodium formate dihydrate are also called, the sodium formate is the simplest organic carboxylate, is white crystal or powder, has a little formic acid smell, is slightly deliquescent and hygroscopic, is easily soluble in about 1.3 parts of water and glycerin, is slightly soluble in ethanol and octanol, is insoluble in ether, the water solution of the sodium formate is alkaline, the sodium formate is decomposed into hydrogen and sodium oxalate when being heated, then sodium carbonate is generated, the sodium formate is mainly used for producing sodium hydrosulfite, oxalic acid and formic acid, is used as camouflage acid in a chrome tanning method in the leather industry, is used for a catalyst and a stable synthetic agent, and is used as a reducing agent in the printing and dyeing industry, and is harmless to human bodies, has stimulating effect on eyes, respiratory system and skin.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.