SU1250799A1 - Method of drying lumber - Google Patents

Description

one

H idOpe I t-nnc stshnit sts toPrabitke n may Whine ngpolchooano in the Lesch of ILYI de fie noo bra scum of industrial or other areas where the drying of the wood and space.

The purpose of the invention is to improve the process, increase the efficiency and quality of drying.

The cyiijKH method is as follows.

The drying equipment is assigned to the sawn lumber, 1 is placed in a drying stack and the chamber is placed where it is heated, moisture is evaporated from them, production; t moisture warming and conditioning. Moisture heat treatment is accomplished by introducing a drying agent in a circulating water JUTION agent to a finely dispersed state of water in which Pre-injection 11 (L) is a surfactant active substance (surfactant), for example, lignosulfur (C-M) tech- nical , in relation 0.5-3% to the mass of sprayed moisture. In contact with the surface of wood, which is characterized by a set of irregularities, the presence of a pile, a lot of elevated and deformed in anatomical elements, the treated VLV1 dda is strongly condensed on each villus and unevenness, so they are wetted by a hopoiijo; The amount of moisture absorbed by: this unit of the wood surface in a definite time increases significantly; the consumption of water and energy is reduced, the intensity of the process increases, the quality of the treatment improves.

The same effect will be achieved if the lumber is subjected to surfactant treatment before loading into the chamber and drying. Processed surfactant materials are placed in the chamber and dried in normal mode.

Moisture-heat treatment of sawn timber is made by spraying water. When condensation on the surface of wood moisture interacts with surfactants applied to the wood previously. In this case, the effect of wetting and moisture absorption by the wood is achieved, anal (1 described above.

Surfactant consumption 0.1-d, 3 kg per 1 m of material.

Examples To determine the surface moisture absorption of the core, P2

The spruces are shaped like spruce woods with dimensions of 300–20–20 mm with a humidity of W 18%.

Lignos was used as surfactant | Phonate technical (TJIC).

The dry matter content is A8.2%, the density is 1.231 g / cm.

G;) 1li prepared 0.2; 0.5; 1.5% aqueous solutions CL. In each example, 6 samples were used. Before starting the experiments, each sample was weighed with an accuracy of 0.01 g, then it was stirred into the solution of CLW and kept there for 1 s, removed and weighed again. By weight of the dry and wet samples, Kojni4ecTBo traps and absorbed by the sample were determined. For comparison, control samples were wetted with distilled water; -, oh.

Table 1 shows the results of experiments.

An analysis of the experimental data obtained shows that the moisture absorption process is most intensive when the TLS concentration is 0.5–3%, after which the process is stabilized, and there is practically no increase in moisture absorption with a higher TLS concentration. I

Experiments to determine the moisture absorption of pre-treated TSL wood were carried out under the same conditions. The pre-image of wood was treated with a TLC solution at the rate of applying 0.1-0.3 kg of TLC per 1 m of material and then they were dried to

humidity 16-18%.

The samples prepared in this way were weighed, then placed in distilled water and kept there for 1 s, weighed again. From the difference in weight of the dry and wet samples, the amount of moisture absorbed by the sample was determined.

Table 2 shows the experiments.

Analysis of the experimental data of examples 7-11 shows that the process of moisture absorption of pre-treated wood proceeds most intensively when applying CLW of 0.1-0.3 kg / m, after which it stabilizes

There is practically no further increase in moisture absorption with a larger amount of deposited CL.

3 2 -j07994

Thus, from Tables 1 and 2 it can be seen, perhaps correspondingly, that the moisture absorption of wood by the length of moisture-heat growth increases by a factor of 2-3; investigator

Table 1

Consumption

tle,

kg / m

0.1 0.2 0.3 0.35

Editor T. Parfenova

Compiled by V.Vakar Tehred O.Gortvay

Order 4396/32 Circulation 634 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, Projecto st., 4

, 03

Increase absorption

table 2

Moisture absorption, g

Absorption

1, 08

2.05 2.6 3.12 3.14

Increase absorption

1.9 2.4 2.9 2.9

Proofreader M.Sharoshi

Claims (1)

THE METHOD OF DRYING SAWINGS by removing moisture using a surfactant, characterized in that, in order to intensify the process, increase the economy and quality of drying, the surface of the lumber is treated with a surfactant with an aqueous solution concentration of 0.5-3 wt.% At flow rate О, ΙΟ, 3 kg / m of lumber. 12