CN1240777A

CN1240777A - Solid-state CO2 gas fertilizer and its preparing process

Info

Publication number: CN1240777A
Application number: CN 98115369
Authority: CN
Inventors: 陶世荣
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-07-02
Filing date: 1998-07-02
Publication date: 2000-01-12

Abstract

A solid-state CO2 gas fertilizer contains solid acid and ammonium hydrogen carbonate in a weight ratio of 1 : (1.2-1.3). Said solid acid is prepared through mixing lignite or weathered coal with powdered phosphorus ore in a weight ratio of 10 : 1 and the reaction of obtained mixture with the mixture of nitric acid (1 pts. wt.) and sulfuric acid (100 pts. wt.) in weight ratio of 1.8 : 1 at ordinary temp for 5-10 min while stirring. The concentration of said acid mixture is 70-75%. Its advantages are convenient storage and transportation, high safety, low cost and convenient application.

Description

Solid-state CO 2 gas fertilizer and production method thereof

The invention belongs to fertilizer field, particularly a kind of production protection ground farm crop are used gaseous fertilizer and production method thereof.

CO 2 gas fertilizer can promote photosynthesis of plants, and raising output is improved crop quality and is familiar with by people.The carbonic acid gas application process of having promoted at present mainly contains following several: 1, the industrial carbon dioxide compression steel cylinder dispensing of reducing pressure in canopy; 2, adopt chemical method with acidolysis carbonate release of carbon dioxide; 3, the carbonic acid gas generating unit is installed in canopy, burning coal is through mixing, compression, release of carbon dioxide.The 1st kind of mode needs a large amount of steel cylinder turnovers, and investment is big, not beneficial popularization; Though the 2nd kind of chemical method less investment, the transportation of fluid sulphuric acid, hydrochloric acid, storage, packing are all dangerous, the accident of easily burning; The plant investment of the 3rd kind of method is bigger, and particularly the confidential electricity consumption of gas compression source is difficult to promote for the side area.

Now disclosed " a kind of production and application process of protecting ground carbonic acid gas solid state gas fertilizer " (CN1088562A) be with the sulfuric acid of the bituminous coal powder of particle diameter 2-4 millimeter and 90% above concentration 110-160 ℃ react 3 hours after; at room temperature continue reaction 6 hours; form porousness black particle solid peracid; solid peracid mixes with bicarbonate of ammonia when using; this solid peracid complex manufacturing, cost is higher.

A kind of gas production rate is big, production process is easy, cost is low solid-state CO 2 gas fertilizer and production method thereof have been the purpose of this invention is to provide.

The object of the present invention is achieved like this: a kind of solid-state CO 2 gas fertilizer and production method thereof, comprise solid peracid and bicarbonate of ammonia, and the weight ratio that it is characterized in that bicarbonate of ammonia and solid peracid is 1: 1.2-1.3.Solid peracid is to be mixed with ground phosphate rock by brown coal or weathered coal, and its weight ratio is 10: 1; And then with the reaction of nitric acid and vitriolic mixing acid, nitric acid and vitriolic weight ratio are 1: 100, the concentration of mixing acid is 70-75%, the weight ratio of coal and ground phosphate rock mixture and mixing acid is 1.8: 1; Temperature of reaction is controlled at 15-20 ℃, and the reaction times is 5-10 minute; Brown coal or weathered coal are crushed to 40 orders, and ground phosphate rock is crushed to 120 orders.

The preparation solid peracid: brown coal (or weathered coal) being crushed to 40 orders, ground phosphate rock is crushed to 120 orders, is to mix at 10: 1 with brown coal (or weathered coal) and ground phosphate rock by weight; Nitric acid is mixed by weight 1: 100 with sulfuric acid, the concentration of mixing acid is controlled at 70-75%, with brown coal and phosphorus ore acid powder mixture and mixing acid 1.8: 1 mixing and stirring by weight, temperature of reaction is controlled at 15-20 ℃, stirring reaction 5 minutes, temperature of charge is risen to about 90 ℃ by room temperature, and by the thick powdery Vandyke brown solid peracid that becomes.

During use, get above-mentioned solid peracid and bicarbonate of ammonia mixing and stirring, and then equivalent is assigned in 13 plastic tanks, adds the water of one times of solid materials in each barrel again, in the equidistant greenhouse that is placed on 1 mu of ground, after treating that applying carbon dioxide finishes, the resistates pH value is between 6.5-6.8 in the bucket, and main component is a nitro humic acid phosphorus ammonium binary compoiste fertilizer, and wherein nitrogen, phosphorus content are 10%, nitro humic acid content is 10%, and can be used as topdresses is manured into soil.

Advantage of the present invention have following some:

1, brown coal or the weathered coal raw material in the solid peracid raw material among the present invention is easy to get, and cost is low, be suitable for scale operation.

2, the solid peracid production technique among the present invention easy, need not heat, thereby investment of production equipment is little.

3, invented solid gas fertilizer is easy to use, does not need specific installation.

4, the residue after the invented solid gas fertilizer among the present invention is used is that the binary compoiste fertilizer can be accomplished fertile many usefulness, and effect of increasing production is obvious.

5, the solid peracid among the present invention is convenient to storage and transportation, security is good, easy to use, easy to utilize.

Claims

1, a kind of solid-state CO 2 gas fertilizer and production method thereof comprise solid peracid and bicarbonate of ammonia, and the weight ratio that it is characterized in that bicarbonate of ammonia and solid peracid is 1: 1.2-1.3;

2, according to solid carbon dioxide gas fertilizer and the production method thereof described in the claim 1, it is characterized in that solid peracid is to be mixed with ground phosphate rock by brown coal or weathered coal, its weight ratio is 10: 1; And then with the reaction of nitric acid and vitriolic mixing acid, nitric acid and vitriolic weight ratio are 1: 100, the concentration of mixing acid is 70-75%, the weight ratio of coal and ground phosphate rock mixture and mixing acid is 1.8: 1; Temperature of reaction is controlled at 15-20 ℃, and the reaction times is 5-10 minute; Brown coal or weathered coal are crushed to 40 orders, and ground phosphate rock is crushed to 120 orders.