SU1112025A1 - Method for controlling neutralization of extraction of phosphoric acid with gaseous ammonia in reactor - Google Patents

Abstract

METHOD OF MANAGEMENT OF PROGRESS CENTER FOR NEUTRALIZATION OF THE STRATIFICATION

Description

one

The loss of production pertains to the automatic control of the process of the production of mineral fertilizers and, in particular, the production of ammophos,

There is a method of controlling the processes of ini1 (tra- lization in the production of biinrepajibHbFX fertilizers by controlling the ratio of the costs of its minerals (phosphoric acid) and nitrate (ammonia) reagents, i /; 1 However, this method of automatic control by the neutralization method does not provide high quality at the required level of the resulting pulmonary. The fact that the ratio of the costs of exg | |:; of phosphoric acid and ammonia at the inlet to the reactor does not provide. It doesn’t mean the degree of 1gag-1I neutral and rheolopgcheg of the characteristics of the qualities of qualities obtained from entrances to the IjeaKTop, since the regulator system is built without taking into account hydrodynamic and kinetic factors, 1 Lee with 1 Gl for the neutralization process The most similar in technical terms to the expected one is the method of automatic control of the process neutralizing extraction, phosphoric acid with gaseous ammonia in the reactor by adjusting the ratio of acid and ammonia consumption to the reactor, exposure to ammonia consumption, and measuring the concentration of acid, impurities in acid, moisture, pH and viscosity of neutralized pulg1p 1 C2.

The disadvantage of the known method is that the 1p ratio of the costs of neutralizing and neutralizing peai-eHTOB is adjusted with parameters according to parameters 11) of the crystallized slurry at the reactor exit, the sensors measuring which metrological characteristics due to crystallization, incrustation of the medium under the conditions of the operations of these industries where the supply of the neutralizing agent is carried out without taking into account the full metallic description of the neutralization process. These flaws do not provide high o2 .025a

Whose qualities in ui-P KanHfi lia require 1 o m u r o u s u o t-11 o u e b; g R and s x o d. o i; not both triggered and 1 neutral; mon; ex reactants at the reactor inlet, Io leads to the loss of raw materials,

11e of the invention; l: for reducing the loss of raw materials,

Postavlenpa The goal of dosptgast is that according to the method of controlling the process of neutralization of extractive phosphoric acid; gaseous ammonia in the reactor by recirculating the CI OB or not with the same solution in acid and ammonia, the effect on the consumption of ammonia and usMeijejn-iH co; P, centrant of acid; this and acid, 7 opol pntel1o measure the temperature and shallowness of KHCjiOjbi, pressure h gemk-taturu). :) Actress mg-pgak, as indicated by the scattering of the sample D e ate w: the degree of neutralization is hulled and corrects the consumption of ammonia ;; Zav1-1Smostk from the degree of neutralization lulle

The drawing is a block diagram of the control system; implement / lain-ibiji method

At pipelines (1 fps ro: 1DE, density and: c;.) A1ur1 to the pipelines, aMNmaKa gaseous feed gas from the reactor, the -9 meters are installed, respectively, flow rate, temlerature, and pressure of the ag-gmg gas, in the reactor 2 - L5 measurements and (j –l 1 parameters consist} 1:; 1I pelctor: dark, system is abraded -; contains;; nt data entry block 12, block 13 of chemical analysis results, block 14, input reference information 11 1И, , block 15 K; -Prectification of the coefficients of the kinetic and hydrodynamic hurray B penny of the mathematic model of the object bl ek 16

K orakt Iv ov k i l on tm it ki x t-sar-ak t te risties of the object, calculator 17 (SM-W, CM-2M} values of corrective and resilient effects valve 18 for supplying gaseous ammonia.

The method is based on the syllabics of the group, m o6pa3otv.

In the reactor 2 through the pipeline 1 pstulaet extraction phosphorus

acid, through the pipeline 6 - gaseous ammonia Siggshy with measures 3-5 according to the flow rate, temperature density chemicals, with

Claims (1)

METHOD FOR CONTROLING THE NEUTRALIZATION PROCESS OF 'EXTRACTION PHOSPHORIC ACID WITH GAS AMMONIA IN A REACTOR by adjusting the ratio of acid and ammonia consumption in the reactor, affecting the ammonia cleavage and measuring the concentration of acid and impurities in the acid, as a result In order to reduce the loss of raw materials, they additionally measure the temperature and density of the acid, the pressure and temperature in the ammonia reactor, according to the specified parameters, determine the degree of neutre / alizapia of the console, they adjust the ammonia consumption depending from one hundred <3 penalties to neutralize pool’s. SU „„ 1112025. g